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Using Arduino => General Electronics => Topic started by: eddiea6987 on Sep 20, 2011, 08:46 am

Title: List of your favorite IC's
Post by: eddiea6987 on Sep 20, 2011, 08:46 am
first off im not sure if this should be here or perhaps under Bar sport, the mods would know best sorrry.

any who i always seem to find some sort of IC that i only wish i would have discovered earlyer ,
like right now i just found out the existence of a 16 channel PWM IC , the TLC5940.
I have a little text file i keep adding new ICs  i come across , some i do not know how to use but still i add them.
My discovery of Shift registers was love at first site i love it. and now the TLC5940! i think a minaj is in the making.
but i just wanted to see some of your favorite ICs or something you would like or what you find you use the most. 
Title: Re: List of your favorite IC's
Post by: retrolefty on Sep 20, 2011, 09:23 am
Rather then specialized function ICs, my favorite chip is that all too familiar op-amp. While one can pursue specific specifications in selecting a op-amp (rail to rail, ultra low noise, etc), the amazing thing is how many specialty circuits one can create with this most unsung of chips, behold the mighty op-amp. If you were stuck on a tropical island with only batteries and passive components, the op-amp is the chip that would save your sanity and possibly your life.  ;)

Lefty
Title: Re: List of your favorite IC's
Post by: eddiea6987 on Sep 20, 2011, 09:30 am
Funny you should mention op-amps this Fat book i am trying to conquer has a rather long chapter on them which is what i am up to right now. i do not know why but  I have always associated op-amps with Audio type of circuits but perhaps this chapter will debunk that. I know little about them .

I think it is because when i hear amplifier i think of speakers.
Title: Re: List of your favorite IC's
Post by: retrolefty on Sep 20, 2011, 09:44 am
Quote
I think it is because when i hear amplifier i think of speakers.


No, that has limited your imagination. Op-amps are such a universal building block component that it's application spans all parts of the electronic spectrum. Did you know that the basic digital inverter function is indeed a amplifier in that it has a high input impedance and a low output impedance, making it a current amplifier, so all amps aren't for just making sound.

Lefty
 
Title: Re: List of your favorite IC's
Post by: eddiea6987 on Sep 20, 2011, 10:00 am
You are right i am probably stunting any possible growth by shallow assumptions. I have many years ahead of me to learn and op amps are up next .
Like the saying goes " i know enough to know i dont know much" , but right now i am also enjoying the many different type of ICs there are it seems there is one for just about everything. I need to go find a list or buy a grab bag and start experimenting
Title: Re: List of your favorite IC's
Post by: Grumpy_Mike on Sep 20, 2011, 10:47 am
In the not so distant past big distributers had catalogues you could flick through reading about what ICs they had. My favourite section was always the specialist ICs. You can do the same thing on line but it is a bit more tricky. 
Title: Re: List of your favorite IC's
Post by: graynomad on Sep 20, 2011, 11:08 am
Quote
In the not so distant past big distributers had catalogues you could flick through

I thought they'd stopped print real paper cattle dogs but apparently my Farnell (sorry, Element14) one is in the mail.

That will be hours of fun for the whole family when it arrives, it's almost enough to make a bloke wish he had grand kids to read to :)

BTW Grumpy, stella performance on that Maker Fair video.

_____
Rob
Title: Re: List of your favorite IC's
Post by: MarkT on Sep 20, 2011, 03:43 pm
Back in the '80s I think the answer would have been the Z80B microprocessor - I know I pretty much memorised the hex codes for all the instructions(!).

These days I'd go for sneaky specialist ICs like the LTC3588 energy harvester, one of those MEMS gyros or the AD98xx/AD99xx DDS chips - although for instruction-set fun nothing these days beats the Parallax P8X32A Propeller I think.
Title: Re: List of your favorite IC's
Post by: CrossRoads on Sep 20, 2011, 04:40 pm
TI still has a great book - The Logic Pocket Data Book
http://www.ti.com/lit/ug/scyd013b/scyd013b.pdf

When I was a young engineer (in the mid 80's) we used to have bookshelves full of things like this from TI, National Semiconductor, Intel, IDT, Motorola, AMD, Atmel, etc.
Now everything is online and there are lot more choices, so you need a better idea of what/where to look for.
I still have my National Semi Linear Applications Handbook, but usually I just look up online what I need.
Application notes are really helpful too - Atmel has a bunch, as does Maxim, TI, and others.

I have a couple of huge printed catalogs at home - Mouser and Digikey I think.
Title: Re: List of your favorite IC's
Post by: spirilis on Sep 20, 2011, 09:57 pm
Wow fantastic book CrossRoads!  That one's going to the top of my bookmarks...
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 20, 2011, 10:14 pm

TI still has a great book - The Logic Pocket Data Book  http://www.ti.com/lit/ug/scyd013b/scyd013b.pdf

When I was a young engineer (in the mid 80's) we used to have...


When I was a young engineer (in the mid 50's) we used to have... cool multifunction stuff like 6SN7's  
Data Sheet: http://en.wikipedia.org/wiki/6SN7

(Later, George Philbrick made an Operational Amplifier out of something like 3 6SN7's)

But today, right after the Operational Amplifier, I'd suggest a comparator like the LM339 (4 comparators) or LM393 (2) You can do SO much with a comparator.. all kinds of cheapo resistor-capacitor timing, easy oscillators, pulse generation, etc etc.
Datasheet: http://www.national.com/ds/LM/LM139.pdf

[Hey thanks, Crossroads, that TI book's in my Library now!]
Title: Re: List of your favorite IC's
Post by: CrossRoads on Sep 20, 2011, 10:37 pm
"That one's going to the top of my bookmarks..."
I would download and keep a local copy  - at 5-6 MB, way faster to open & search on local hard drive.
Title: Re: List of your favorite IC's
Post by: CrossRoads on Sep 20, 2011, 10:39 pm
Every once in a while you see tube op-amps on e-bay. Always end up going for more than I am willing to pay tho.
Title: Re: List of your favorite IC's
Post by: justjed on Sep 21, 2011, 01:07 am
I'm not knowledgeable like the veterans, but I've seen lots of stuff done with the 555 and 556.


When I was a young engineer (in the mid 80's) we used to have bookshelves full of things like this from TI, National Semiconductor, Intel, IDT, Motorola, AMD, Atmel, etc.


Someday, maybe I'll post pics and tell the longer story, but on Independence Day, at a group picnic, a couple ladies showed up with boxes of books, and I acquired the lion's share of the stuff on electronics. No space available to sort through it all, but one day, maybe I'll get to it somehow and post a photo. Gobs of app. manuals, etc., from RCA, Sylvania, Fairchild (I think), on and on. Plus tube guides, HAM, RC, ... too much to list really.
Title: Re: List of your favorite IC's
Post by: retrolefty on Sep 21, 2011, 01:13 am
Quote
maybe I'll get to it somehow and post a photo. Gobs of app. manuals, etc., from RCA, Sylvania, Fairchild (I think), on and on. Plus tube guides, HAM, RC, ... too much to list really.


If some of those are old tube manuals, they tend to be pretty collectable and can sell well. Maybe check out E-bay for prices?

http://www.ebay.com/sch/i.html?_trkparms=65%253A12%257C66%253A2%257C39%253A1%257C72%253A5212&rt=nc&_nkw=RCA+tube+manual&_sticky=1&_trksid=p3286.c0.m14&_sop=3&_sc=1
Title: Re: List of your favorite IC's
Post by: justjed on Sep 21, 2011, 01:34 am

If some of those are old tube manuals, they tend to be pretty collectable and can sell well. Maybe check out E-bay for prices?


I've no doubt there's some collector value there. Not that I have a huge collection, but I'm a book hoarder. Also, when I look at collectibles, I wish I had my school lunch boxes from the 60's. :) (And comic books, and ...)
Title: Re: List of your favorite IC's
Post by: eddiea6987 on Sep 21, 2011, 01:53 am
you guys taking about these? (http://upload.wikimedia.org/wikipedia/commons/7/7e/K2-w_vaccuum_tube_op-amp.jpg)

reminds me of those russian nixie tubes
(http://rpmedia.ask.com/ts?u=/wikipedia/en/thumb/3/3a/Casio_101E_nixietube_disp_1dv.jpg/180px-Casio_101E_nixietube_disp_1dv.jpg)

i was just about to get a pair when i saw how much voltage you have to work with and eh i still dont feel im quite there to be working with anything that high.
but one day, if i can find them
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 23, 2011, 11:17 am
Ok, i'm trying to decide on about a dozen very useful/popular Ics (mostly analog / Interface) that i can source from China at low cost. Probably sell a kit of all part numbers also??

Lefty, you have the Eagle spec. eye..  what's the best low-cost single supply, rail-to-rail opamp, 8-pin or 16 pin DIP??  There must be some recent goodies.

I'm also looking at the obvious:
LM339 / LM393 comparators
NE5532 opamp for low noise, audio, general purpose
LM324 for historical circuits??
ULN2003 / 2803 power drivers
L293 power driver / H bridge
LM386 Little Audio Amp
555 Of course

Some optocouplers:
4N35 oldie, cheap
6N139  ( VERY sensitive)

OK, more to come..

Everyone, what are your favorites or ones you'd like easily available??


Title: Re: List of your favorite IC's
Post by: pwillard on Sep 23, 2011, 06:22 pm
Here is what I keep handy...

General Use:
LM335, TIL431, LM78(L)05, LM317, 74147, 74148, 7400, 7404, 7405, 7414,7472, 7474,74192,74595,CD4040, LF351, LM833, LM311, LM339, LM555

Special Use:
LM35DZ, AD592, TIL311(well out of production), TLC272 (Single Supply Op amp that works at 5V)
Title: Re: List of your favorite IC's
Post by: retrolefty on Sep 23, 2011, 06:32 pm
Quote
Lefty, you have the Eagle spec. eye..  what's the best low-cost single supply, rail-to-rail opamp, 8-pin or 16 pin DIP??  There must be some recent goodies.


So many to choose from, I couldn't recommend anything specific, just go with price and avaliblity. My real fear is anything in the 'recent goodies' catagory will not be avalible in DIP package.

I like you list so far.


Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 23, 2011, 09:11 pm
Quote
So many to choose from, I couldn't recommend anything specific, just go with price and avaliblity. My real fear is anything in the 'recent goodies' catagory will not be avalible in DIP package


Lefty, right about 'recent recent'  . I will do reverse I guess and look at what my low-cost IC guy has and look at the specs..

Pwillard, thanks and I'm checking the ones I don't know well.   Yes, voltage regulators 7805-6-9-12 anyway. And LM317 of course.

There are many other cool chips out there but I am trying to figure a basic low-cost collection that I can sell cheap for anyone who wants to "have most of what I need to breadboard stuff this weekend" in hand. I already have good discrete collections like these:

http://arduino-direct.com/sunshop/index.php?l=product_detail&p=144  and
http://arduino-direct.com/sunshop/index.php?l=product_detail&p=145

...and Yeah, I have to write a page with their basic specs to make it easy...

and then there's the cheap power transistor collection...

DISCLAIMER: Mentioned stuff from my own shop...
Title: Re: List of your favorite IC's
Post by: marklar on Sep 24, 2011, 06:54 am
WS2801
You mentioned the TLC5940 so I"ll toss in the WS2801.  This chip has what I consider the best number of fade step levels - 256 - matching the byte and has a smooth fade.

MSGEQ7 (and related shields)
http://www.sparkfun.com/products/10468
Outside the atmegaxxx - this chip is my favorite as it provides fantastic music reading capabilities at a very low price point.  
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 24, 2011, 01:10 pm
Marklar, that IS cool!!

Arduino code could use the WS2801 and other algorithms and stored patterns to make very high-function LED displays..

Gotta get some...

Thanks!
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 26, 2011, 10:54 pm
Hi, OK I did some digging and looking at a LOT of spec sheets. Weirdly enough, I enjoy that  :D

Here's my pass at "Popular ICs: Analog, Interface, Opto, Digital". This collection I can sell for $10 and still make a little. Next will be a Power FET collection.

---------------------( COPY )--------------------------
Popular IC Assortment for $10            
quantity Part#   Description            Package
4   LM339   4x comparator      dip-14
2   LM393   2x comparator      dip-8
4   NE5532   2x low-noise opamp      dip-8
4   LM324   4x opamp singlesupply      dip-14
2   LM386   Audio amp low-voltage      dip-8
4   NE555   Timer-General purpose      dip-8
            
2   6N139   Opto-Isolator CTR2000      dip-6
8   PC817   Opto-Isolator CTR500      dip-4
4   4N25-35   Opto-Isolator CTR100      dip-6
2   MOC3061   Opto-TRIAC 0-crossing      dip-6
            
4   MAX485   RS485 Transceiver      dip-8
            
4   74HC14   6x Inverter-ST              dip-14
8   74HC595   8xSerialIn-ParallelOut      dip-16
-----------------( END COPY )----------------------

I would put this list on my Wiki with links to all the data sheets...

Comments, suggestions, don't-ever-need-it's etc. welcome!!

Title: Re: List of your favorite IC's
Post by: justjed on Sep 27, 2011, 01:19 am
Thought you were going to put some voltage regulators in there?
Title: Re: List of your favorite IC's
Post by: eddiea6987 on Sep 27, 2011, 04:39 am
nice, i would go for that, i'd have to learn how to implement op amps and comparators , i am only begining to understand the theory side through some videos from MIT :), but i would def go for that send me a pm when available
Title: Re: List of your favorite IC's
Post by: avenue33 on Sep 27, 2011, 02:53 pm
Hi,

My favourite IC is the I2C 4-channel true colour Avago ADJD-S371 / ADJD-S311 sensor.

(https://lh3.googleusercontent.com/_Ht_AVQXHSto/TUwGBFxC4eI/AAAAAAAAH1w/0TIwvFzkMIE/s400/v_IMG_1440.JPG)

Each channel, red green blue clear, is 10-bit long, so final measure is 40-bit long!

The I2C protocol makes it very easy to use.

For more, take a look at my implementation (http://sites.google.com/site/vilorei/arduino/07--i2c-colour-sensor-with-arduino-tx-c-connection).
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 27, 2011, 03:45 pm

Thought you were going to put some voltage regulators in there?


There are so many possibilities and applications that I seems like that's a category of it's own...  I'll be detailing that soon...

Not sure if "one of everything" is good, or "enough to really build something" is better??

What do you think?
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 27, 2011, 03:55 pm
Quote
My favourite IC is the I2C 4-channel true colour Avago ADJD-S371 / ADJD-S311 sensor.


That's a very interesting chip. Where can we get it? Price?? Nice work on your article!

How does it compare with this board??  http://item.taobao.com/item.htm?id=10665501753  (I have one of these and I will test it soon..., maybe sell)

Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 27, 2011, 04:02 pm
Quote
i'd have to learn how to implement op amps and comparators


Good point. I am writing a page on comparators now..  And the Good Old 555 is basically two comparators set up to "watch" a capacitor charge up and discharge to make a "timer". I plan to relate that stuff. 

I may 'steal' some good Opamp material, but I hope to write a simple introduction.  I consider an OpAmp as a "Easy to control Amplifier".

I feel that the combination of Arduino with these basic Electronics components creates very powerful abilities to Make Stuff that works...
Title: Re: List of your favorite IC's
Post by: avenue33 on Sep 27, 2011, 04:24 pm
Let me answer your questions on the reverse order!


Quote
My favourite IC is the I2C 4-channel true colour Avago ADJD-S371 / ADJD-S311 sensor.

How does it compare with this board??  http://item.taobao.com/item.htm?id=10665501753  (I have one of these and I will test it soon..., maybe sell)


The Taos TCO320 (http://www.comet.bg/datasheets/Taos/TCS230-E15.pdf) convert colour into frequency, one channel at a time to an 8 to 24 kHz range.

Hence you need to ask each channel sequentially and rely on a precise clock to perform a full measure. So the sketch (http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1269550536) is more elaborate.

I considered this option but went for the I2C Avago sensor instead.
Quote
That's a very interesting chip. Where can we get it? Price?? Nice work on your article!

Check at Sparkfun for the IC at US$5 (http://www.sparkfun.com/products/10656) impossible to solder without proper equipment, or the ready-to-use evaluation board (http://www.sparkfun.com/products/10701) at US$15 worth the price.

There are many libraries available for Arduino.

I designed my own (http://sites.google.com/site/vilorei/arduino/07--i2c-colour-sensor-with-arduino-tx-c-connection/07b--arduino-program) to meet specific integration into fischertechnik models (http://sites.google.com/site/vilorei/fischertechnik/m--models/m14--industrial-colour-reader).
Title: Re: List of your favorite IC's
Post by: Grumpy_Mike on Sep 27, 2011, 07:06 pm
Quote
921 600 bps ( = 14.7456 MHz / 8 )


according to my maths
921 600 bps ( = 14.7456 MHz / 16 )

so try Serial.begin(1000000UL);
Failing that set the divisor registers directly.
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 27, 2011, 08:57 pm
OK, Here's my second pass at a $10 assortment of Power FETS (I talked myself out of the first one ):

$10 Power Field Effect Transistor Assortment (10 FETS)   
quantityPart #Description   Volts   Amps   @gate V   RDSon   Package
2   IRF540   NFET    80   20   11           0.077          TO-220
2   IRF9540   PFET     80   20   -11           0.12         TO-220
                     
2   IRF740   NFET          400   10   10           0.55          TO-220
                     
2   IRF3205   NFET           50   80   10           0.008          TO-220
2   IRF4905   PFET      50   50   -10          0.02          TO-220
4       2N7000      NFET         60    0.2    5              1.8           TO-92    **Added
10   LM555    "Timer" IC used as FET Gate Driver       DIP-8

(A More detailed page will be available on our arduino-info Wiki Real Soon Now...)

NOTES: These are powerful transistors with very low losses due to On-Resistance and switching. BUT they are useable only at voltages above 9V, and preferable 12V or more. This is because they need 10 volts of Gate Voltage change to be turned fully on.  Gate drive for NFETS connected as low-side switches (Source at Ground) can easily be done using 555 ICs as Gate Drivers (see Wiki). At 12 to 18 Volts, 555s can also be used as drivers for PFETs connected as high-side switches.  At higher voltages some other circuitry must be used for PFETS.

There are some nice "Logic Gate" Power FETS, but they all cost a lot more. We plan to offer them individually.
We do include 4-  2N7000s, a small Logic-Gate NFET

Please offer comments, suggestions etc...!!

Title: Re: List of your favorite IC's
Post by: retrolefty on Sep 27, 2011, 09:09 pm
Quote
Please offer comments, suggestions etc...!!


A small low current MOSFET that seems to work fine at logic levels is the 2N7000 (fig 1 shows useful typical current at gate logic voltage), perhaps it would be a good candidate to offer in the assortment mix? I think they can be had pretty cheap.

http://www.fairchildsemi.com/ds/2N/2N7000.pdf
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 27, 2011, 09:42 pm
Quote
A small low current MOSFET that seems to work fine at logic levels is the 2N7000


Nice! I added 4 of those in the package, same price....

Thanks, Lefty...
Title: Re: List of your favorite IC's
Post by: Onions on Sep 27, 2011, 10:02 pm
My favourite IC is definately an ATmega328P, the same one in most arduinos :) . I also like the classic 555 and the LM386. Flip flops come in handy because they are so versatile (read latches, binary counters, LED flashers)... I would like to like op-amps, but they are something I have never properly used. My first robot was built around an op amp, but it never worked :( . I haven't played with them since.

Onions.
Title: Re: List of your favorite IC's
Post by: justjed on Sep 28, 2011, 12:42 am


Thought you were going to put some voltage regulators in there?


There are so many possibilities and applications that I seems like that's a category of it's own...  I'll be detailing that soon...

Not sure if "one of everything" is good, or "enough to really build something" is better??

What do you think?



It's just that you had mentioned them initially, and there seems to be quite a few threads here about using, typically, the LM317, and people asking how to "power" their project from the Arduino, when they really need more current. Maybe using a wall wart is the easier solution. Or fixed 5V and 3.3V regulators?

"One of everything" probably leads to madness. :) Depending on the audience, I think "most useful" is a good criterion, but then that's hard to judge as well. If you're aiming at people just getting started, who are looking to learn as they go, does that change the mix?
Title: Re: List of your favorite IC's
Post by: dc42 on Sep 28, 2011, 02:09 am

OK, Here's my second pass at a $10 assortment of Power FETS (I talked myself out of the first one ):

$10 Power Field Effect Transistor Assortment (10 FETS)   
quantityPart #Description   Volts   Amps   @gate V   RDSon   Package
2   IRF540   NFET    80   20   11           0.077          TO-220
2   IRF9540   PFET     80   20   -11           0.12         TO-220
                     
2   IRF740   NFET          400   10   10           0.55          TO-220
                     
2   IRF3205   NFET           50   80   10           0.008          TO-220
2   IRF4905   PFET      50   50   -10          0.02          TO-220
4       2N7000      NFET         60    0.2    5              1.8           TO-92    **Added
10   LM555    "Timer" IC used as FET Gate Driver       DIP-8

...

Please offer comments, suggestions etc...!!


IMO it is a big mistake not to include a logic-level power mosfet. I'd drop the 2 x IRF540 and replace it by 1 x STP40NF10L (100v 40A), which costs about the same over here and is much more useful because it is logic level. I'd be tempted to replace the 2 x IRF4905 by another STP40NF10L too, because I rarely need P-channel power mosfets or switch more than 10A, and you already have the IFR9540 in there. I'd also consider including a p-channel low power mosfet, but unfortunately they mostly come in SMD packages.
Title: Re: List of your favorite IC's
Post by: CrossRoads on Sep 28, 2011, 02:47 am
As the 'Book of 5 Rings' says "I have no favorite weapon"
I make use of whatever I happen to have available or can scrounge up as a sample  XD
Title: Re: List of your favorite IC's
Post by: justjed on Sep 28, 2011, 03:11 am

As the 'Book of 5 Rings' says "I have no favorite weapon"
I make use of whatever I happen to have available or can scrounge up as a sample  XD


Well, sure. You've been doing this for a while. I figure you could open up shop! ;)
Title: Re: List of your favorite IC's
Post by: CrossRoads on Sep 28, 2011, 03:20 am
Sure - just need to come up with a killer board 8)
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 28, 2011, 08:34 am
Hey Everyone, thanks for the many suggestions (and a few laughs.. a highly important component of personal electronics).

I'll try to answer a few things, ask a few things (sounds like a good day at the bench...)

Quote
Thought you were going to put some voltage regulators in there?
Yes.. I will, real soon.. but it probably will be a $5 assortment because there are lots of possibilities, including my personal favorite LM317 which I once bought a barrel of (literally.. but I'd digress if I started that story).

Quote
IMO it is a big mistake not to include a logic-level power mosfet.
I'll try to.. I'm trying to get a low-cost bunch that I know I can get at a good price from Mr. Tang at CEPREI, down the street in Shenzhen. But all the logic level part# I've tried with him so far returns "The baby does not correspond to" (well, that's the literal translation of the Chinese equivalent of "part not found"..)  The STP40NF10L is about $1.75 at Mouser and I'll ask my partner Peng to look for it at some of the other 900+ suppliers in the SEG market.

I want to carry some of the newer, most-useable parts but it doesn't make sense for me to try to do what Digikey and Mouser do so well, and ship from China. "When" I write a good? How-To page on Power FETS I will link to some Mouser part#s.

OH: Drivers.. after looking at the (cheap) possibilities for driving these low-cost but 10V gate swing FETS I decided to include 10 drivers useable up to 18v for either NFET or PFETs. It's the good-ole 555 which makes a nice +-200ma driver, swinging near ground and supply. Plus you can just use it as a quick PWM driver to try things out. Works well on 12V for both N and P, and works well for N even when drain voltage is high.  I gotta write THAT page and do some diagrams. 

Quote
There are a good selection of octal NPN packages for low-side switching, but are there any complimentary OCTAL PNP high-side switch parts?

I'd love to find a nice octal (8 in a package) driver that was source-sink. There are some cool FET gate drivers that would probably work for that, but I can't buy them for 25 cents! But I'll add a couple of  ULN2003 Transistor Darlington Array to the IC assortment for now.

The talk here reminds me of the saying, "We don't make much money, but we have a lot of fun!"..  As long as US Social Security keeps running, and I stay with my local Mediterranean Diet, I can keep running  :D


Title: Re: List of your favorite IC's
Post by: dc42 on Sep 28, 2011, 11:50 am

The STP40NF10L is about $1.75 at Mouser and I'll ask my partner Peng to look for it at some of the other 900+ suppliers in the SEG market.


If you're looking for something that costs less, there's the STP16NF06L at around half the price of the STP40NF10L, but rated 60v 16A instead of 100v 40A.
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 28, 2011, 04:16 pm
Quote
there's the STP16NF06L at around half the price of the STP40NF10L, but rated 60v 16A instead of 100v 40A.


OK, thanks DC. 

I need to separate out semiconductors I can get from my commodity guys at low prices and parts from "distributors" of more up-to-the-minute items..
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 28, 2011, 11:16 pm
Ok, VOLTAGE REGULATORS...

.."Come, sit by the glowing LEDs. We serve homemade +5 and Ground.."   (Alan Shils, IBM 1976) 

My idea here is to provide what you'd most likely need on a weekend project, not special stuff you'd expect to have to order. And cheap.

Your opinions??

- Seventy-Eight-Oh-What??

  (TO-220 package) probably 7805, 7808, 7809, 7812, 7815, 7824?
78L (TO92 pkg) 78L5 78L12 all I can get now

79?? Negative regulators??  7915 probably. Others?

LM317T adjustable TO220 of course  LM317L  version??

LM1117T TO220 adjustable Low Dropout   LM1117T-5 5 volt

LM2940 TO220 LDO 5V  Very fault tolerant

I'm figuring how many (lots) for $5  ...
Title: Re: List of your favorite IC's
Post by: retrolefty on Sep 28, 2011, 11:37 pm
Quote
Your opinions??


It would be a loss (opinion only) if you can't sneak in a fixed 3.3vdc regulator, at least a small TO-92 one for those simple voltage conversion needs that the older arduino boards can't handle well with their 40ma limit on their 3.3 volt pin.

http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_1323397_-1
Title: Re: List of your favorite IC's
Post by: justjed on Sep 29, 2011, 12:43 am

Quote
Thought you were going to put some voltage regulators in there?
Yes.. I will, real soon.. but it probably will be a $5 assortment because there are lots of possibilities, including my personal favorite LM317 which I once bought a barrel of (literally.. but I'd digress if I started that story).


[voice='charlie_brown']
Rats!
[/voice]

Well, I'll still grab the IC assortment, when it's available, and a couple others too.

The LM317 was the SASE deal (http://arduino.cc/forum/index.php/topic,62088.msg449378.html#msg449378), which I didn't get around to taking advantage of. :(
Title: Re: List of your favorite IC's
Post by: pwillard on Sep 29, 2011, 04:30 am
Quote
P.D.Q. Bach concert:  "Prof Schickele plays whatever piano is available. Exclusively"


Oh god... I know of this... and it makes me feel old.
Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 29, 2011, 09:12 am
Hi, OK I'm working on the list / prices / availability...

Quote
sneak in a fixed 3.3vdc regulator, at least a small TO-92

OK, I will add a couple. Right now I can only get TO220 LM1117 LDO (Cost is 50 cents and that's 10% of my retail target ) ...and some surface-mount, which I am trying to avoid for these packages..

Quote
The LM317 was the SASE deal, which I didn't get around to taking advantage of.

Hey, you have a long memory  ;)  and now those LM317T's are in USA and I'm in Italy. But the China price is good...

Quote
I know of this... and it makes me feel old.
Compared to who  :smiley-roll: ?? When I started work at WELI in New Haven USA there were 100% vacuum tubes and the only semiconductor in the entire place was a 1N34A point contact diode in a modulation monitor  :)

I'll try to get the first-pass list out today...

Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 29, 2011, 10:39 am
Ok, Here's the first-pass on $5 regulator assortment:

Code: [Select]
$5 Voltage Regulator Assortment (33 chips)
quantity Part # package description Volts Amps*
2 LM1117-3.3V TO-220 LDO 3.3 0.80
5 7805 TO-220 7800 series 5 1.00
5 78L05 TO-92 7800 series 5 0.20
1 LM2940-5.0V TO-220 LDO 5 1.00
2 7808 TO-220 7800 series 8 1.00
2 7809 TO-220 7800 series 9 1.00
4 7812 TO-220 7800 series 12 1.00
2 7815 TO-220 7800 series 15 1.00
5 LM317T TO-220 adjustable 1.2-35 1.00
5 TO-220 MICA TO-220 Insulator
33 Total Chips


OH, THAT is how you get columns to stay! (almost)..

I am still trying to find a low-cost 3.3V LDO in TO-92. The other LDO (Low Drop Out in-out voltage difference) regulators add quite a bit to the total cost.

*Current Ratings: Really there is a dissipation rating that is more important for regulators because heat is proportional to the in-out difference voltage. So the published ratings depend on good heat sinking if necessary, and SOME large in-out voltages will never allow the regulator to run at maximum current.

I added some insulators for TO-220.

Comments, suggestions...?? Thanks!




Title: Re: List of your favorite IC's
Post by: terryking228 on Sep 29, 2011, 02:31 pm
Quote
I prefer the silicone sheet insulators

I agree and the ones I found LOOK like "non-mica" and the supplier had mica as separate product. Looks like this (supplier photo):
(http://terryking.us/photos/TO-220Insulator.jpg)
Title: Re: List of your favorite IC's
Post by: marioR on Oct 02, 2011, 11:32 pm
Here's a short list of my IC's:

https://docs.google.com/spreadsheet/ccc?key=0Aut0nY7OmVnBdFBDd1A0YnV4cGF5NHdsd0pzVWxqT0E&hl=en_US (https://docs.google.com/spreadsheet/ccc?key=0Aut0nY7OmVnBdFBDd1A0YnV4cGF5NHdsd0pzVWxqT0E&hl=en_US)

I have a bad habit of ordering complete component lists for projects I never even get to start. Over the years, I've horded hundreds of IC's. I recently began to compile a list, which you see on the link. It's a small fraction of the countless unopened bags I have in my room.

Favorite IC: I have to say, the more useful chips are the ones most people take for granted. Yes voltage regulators are quiet useful, but if it were not for those MAX232 chips, I dare say, the early days of our processors would have been very difficult. To this day, they're quiet a requirement on many of our projects.
Title: Re: List of your favorite IC's
Post by: terryking228 on Oct 03, 2011, 10:15 am
Hi, I'm still looking for a locally (China) available good Logic level FET to add to the PowerFET assortment.  In a few days after the China holidays and I get some stock, I'll make the assortments available...

Thanks for all the suggestions and help..
Title: Re: List of your favorite IC's
Post by: marioR on Oct 05, 2011, 04:52 pm
Hi Terry,

Here's some Fets that are logic level compatible which I didn't include in my list:
FQD5N20L
IRF634
RLZ34NPBF
FDD7N20

I'm not sure about your rationale behind this...

When starting a project, most newbies usually obtain the parts listed on that particular project instead of using what they have on hand. Getting the project up and running is usually more difficult when using non project-specific parts. Just MHO.

Good luck
Title: Re: List of your favorite IC's
Post by: terryking228 on Oct 05, 2011, 05:46 pm
Thanks, Mario.. I'll check if I can get those easily..

The idea behind all this is to have a low cost $10 selection of useful devices that could be used in many projects..

Some of us are Parts Junkies  :-)

(Guilty!)
Title: Re: List of your favorite IC's
Post by: justjed on Oct 15, 2011, 06:27 am
Hey, those new assortments are up at the shop!

http://arduino-direct.com/sunshop/index.php?l=product_detail&p=215
http://arduino-direct.com/sunshop/index.php?l=product_detail&p=214

Time to warm up the CC. :)
Title: Re: List of your favorite IC's
Post by: terryking228 on Oct 15, 2011, 10:19 am
Quote
Hey, those new assortments are up at the shop!


Jeezum Crow! (Vermont-Speak)  I don't even get to announce my own stuff  :P

:D

Actually, we have had some nice deals with a couple of our friendly suppliers. And thanks to many of you here for your suggestions -- always welcome!

Take a look here at all the new goodies: http://arduino-direct.com/sunshop/index.php?l=product_list&c=new

And, take a look over there: http://arduino.cc/forum/index.php/topic,75485.0.html


DISCLAIMER: Mentioned stuff from my own shop..!


DISCLAIMER: Mentioned stuff from my own shop... of course !
Title: Re: List of your favorite IC's
Post by: justjed on Oct 15, 2011, 05:53 pm
Hmmm. Not showing USPS as a shipping option. If "CNS FEDEX" in the drop-down = "Local-Country Express ..." might be that's what I want, but I use a different shipping address depending on whether it's coming USPS or some other carrier.
Title: Re: List of your favorite IC's
Post by: terryking228 on Oct 15, 2011, 06:30 pm
Hi,
Shipping is Yet Another Thing of details to learn about!

We had a shipper who did air freight to US and local delivery by USPS (Like CNS-FEDEX does with Fedex delivery), but we had so many problems with 20 day delays in Customs, we stopped using it.  Actual International Post shipping is very expensive.  DHL is good but not cheap. If you can handle 10+ days then HongKongAirmailRegistered seems quite reliable and ends up delivered by USPS..

Anyone with shipping expertise and suggestions please let me know!
Title: Re: List of your favorite IC's
Post by: kkman20xx on Oct 15, 2011, 09:00 pm
Nice one Terry, good prices on them goodies :D. Any plan for a shop in UK? lol
I am a noob to these things still but I found a couple IC useful (Don't laugh :P):
MAX1044/ICL7660 Switched-Capacitor Voltage Converters  +5v->-5v 100mA
DM74LS138 3-to-8-line decoders or DM74LS139 2x 2-to-4-line decoders.
5.8Ghz Video transimiter: AWM683 module
5.8Ghz Video reciever:  AWM682 module

Title: Re: List of your favorite IC's
Post by: funkyguy4000 on Oct 17, 2011, 01:12 am
bump
Title: Re: List of your favorite IC's
Post by: terryking228 on Oct 17, 2011, 10:00 am
Quote
DM74LS138 3-to-8-line decoders or DM74LS139 2x 2-to-4-line decoders. 5.8Ghz Video transimiter: AWM683 module 5.8Ghz Video reciever:  AWM682 module


Wow, more stuff to look at...

I'm wondering about all the 74xxnnnn parts.. Maybe I'll look at putting a kit together with lotsa those.. Problem is just handling all those parts to collect in kits is a lot of work for very cheap parts. Hmmm..   any opinions??

I remember buying my first 7490 counter and 7447 7-segment display driver. in a set for about $10. Miraculous stuff. In 1969 anyway  :)
Title: Re: List of your favorite IC's
Post by: MarkT on Oct 17, 2011, 07:37 pm

Quote
DM74LS138 3-to-8-line decoders or DM74LS139 2x 2-to-4-line decoders. 5.8Ghz Video transimiter: AWM683 module 5.8Ghz Video reciever:  AWM682 module


Wow, more stuff to look at...

I'm wondering about all the 74xxnnnn parts.. Maybe I'll look at putting a kit together with lotsa those.. Problem is just handling all those parts to collect in kits is a lot of work for very cheap parts. Hmmm..   any opinions??

I remember buying my first 7490 counter and 7447 7-segment display driver. in a set for about $10. Miraculous stuff. In 1969 anyway  :)


Were there 7-segment displays before the 70's then?  I think that was the era of the first digital watches, outrageously expensive LED display ones with v. short battery life!
Title: Re: List of your favorite IC's
Post by: terryking228 on Oct 17, 2011, 09:06 pm
I'm sure there were SOME 7-segment displays before 1970, but 'Neon' "Nixie" tubs with nicely formed numbers were most common.

The first digital clock I built for Broadcast stations in 1970 used the RCA "Numitron" which had filaments in a 9-pin vacuum tube envelope. They were driven by the SN7447s.  They looked like this:
(http://upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Incandescent_light_seven-segment_display_prPNr%C2%B017.jpg/220px-Incandescent_light_seven-segment_display_prPNr%C2%B017.jpg)

Actually they looked better in a dark cabinet...

A friend and I made a few dozen displays with plastic segments embedded in dark "Bondo" type auto body filler. We made 2-foot long strips, and sawed about 24  sections off, polished the fronts a little, and embedded small incandescent bulbs in the back.  That was Broadcast Clock V2, followed by the Recording Timer, where you could see the running time from when you pushed "start" on the cartridge tape machine :-)

Digital Logic. Wow. I was very temporarily the State of the Art in my field. My FET stabilized crystal oscillator with schmitt-trigger output to digital was published in Electronics.

Boy, is that stuff obsolete  :)  I'm trying to stay at least somewhere ON the obsolescence wave  :smiley-roll-blue: