LM324N (quad switch IC)

[JMD1]

Hello guys, today I unsoldered a microchip from an old board, named LM324N. Its not a programmable chip but a switch or something like this. From what I have read the IC I have can be used to amplify voltage. I tried to wire it just like its written in the schematics but from 5V I get 3.8V 0_o
Actually, right now I need a voltage amplifier to amplify 5V of the Arduino pin to exactly 15V (or atleast 12V if 15 not possible).
For those who are familiar, please explain me how this would be possible? If resistors are needed, soon I will have resistors varying from 10 to 1M ohms so tell me the exact resistance needed.
Thank you anyway.

[srnet]

The LM324 has been around since the 70s, there are books about it and heaps of stuff on the Internet on how to use it.

Google 'LM324 Circuits' for lots of info.

Yes it can be an amplifier, but you wont get more voltage out of it than is on the supply rails.

It would 'amplify' 1V by 3 to give 3V output, but with a 5V supply you wont get more than about 4V output.

[DrAzzy]

No "amplifier" will give you a voltage outside the supply rails. If you need to create 12v from 5v, you need to either use a boost converter (cheap DC DC converters come from ebay), or start with 12v (this could be used to get 5v via either buck converter or linear regulator)

If you're switching power to something, use a Mosfet not an amplifier

[MarkT]

Actually, right now I need a voltage amplifier to amplify 5V of the Arduino pin to exactly 15V (or atleast 12V if 15 not possible).

You sure you don't just need a level shifter?  Is this an analog signal (in which case you have a DAC or
a low-pass-filtered PWM output?)  Or is it digital (level shifter is what you need)?
Or is it power?

[KeithRB]

No "amplifier" will give you a voltage outside the supply rails. If you need to create 12v from 5v, you need to either use a boost converter (cheap DC DC converters come from ebay), or start with 12v (this could be used to get 5v via either buck converter or linear regulator)

If you're switching power to something, use a Mosfet not an amplifier

Not quite true. RF amplifiers with inductive bypassing will routinely supply twice the supply voltage. Won't help in this case, though. 8^)

[theenggprojects04]

Hi,

LM324 is a four channel operational amplifier and it has 14 pins in total. Four channel means it has four embedded amplifiers in single chip and it is quite handy to use because you don't need to use -5 volts. You should check out LM324 Pinout, if you are working on it.

Thanks.

[xainnasir]

Can anyone share some good tutorial on LM324 as I have been working on it and it seems quite good and cheap. So share some good links please especially if there's some Proteus simulations available for LM324. Peace !!!

[theenggprojects04]

Can anyone share some good tutorial on LM324 as I have been working on it and it seems quite good and cheap. So share some good links please especially if there's some Proteus simulations available for LM324. Peace !!!

You should check LM324 Pinout here, they have also shared a detailed tutorial and have also given Proteus simulation to download. I hope it will help, if you are working on LM324.

Thanks.

[xainnasir]

You should check LM324 Pinout here, they have also shared a detailed tutorial and have also given Proteus simulation to download. I hope it will help, if you are working on LM324.

Thanks.

Thumbs up bro. Great link. Thanks for sharing.

[westfw]

Can anyone share some good tutorial on LM324 as I have been working on it and it seems quite good and cheap. So share some good links please especially if there's some Proteus simulations available for LM324.

It's a GENERAL PURPOSE op-amp, so you should also look for tutorials on op-amps in general.
They're very powerful analog components!  (and also a big part of most EE curricula, so textbooks will talk about them.)

Op Amps for Everyone
The Signal e-book: A compendium of blog posts on op amp design topics
TI Circuit Cookbook: Op Amps