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1  Using Arduino / General Electronics / Re: Min high input voltage (Arduino Micro) on: April 24, 2014, 08:07:27 pm
You should be fine..... 3.3v should read as high.
2  Using Arduino / General Electronics / Re: blackout circuit - 300ma cc circuit on: April 21, 2014, 07:23:55 pm
Tom.....

The 5v source could be usb, a 5v dc plug pack, a solar cell,. The 12v is a lead acid battery.

Now does the circuit make sense? 5v goes out , circuit comes to life.
3  Using Arduino / General Electronics / Re: blackout circuit - 300ma cc circuit on: April 21, 2014, 07:01:41 am
Hi, have you built the circuit?
If all you are relying on is a computer simulation, sorry nothing like the real thing.

I presume you have a load powered by 12v derived from the mains supply, it is also charging the battery.
If the load current is not too high, just use diode switching to keep battery power applied.
Please a REAL circuit diagram please, not the simulata one. Show battery and supply and load.

Tom..... smiley

How's it different to the real thing?
How's it not a REAL circuit diagram?
4  Using Arduino / General Electronics / Re: Voltage dividing from 5V to 3.3V using a zener diode and a resistor on: April 20, 2014, 06:57:41 am
use a 1k resistor with the zener diode....
5  Using Arduino / General Electronics / Re: blackout circuit - 300ma cc circuit on: April 19, 2014, 11:44:05 pm
No bjt's only lol...

5v goes out your 12v takes over!
6  Using Arduino / General Electronics / Re: High Voltage Regulation on: April 19, 2014, 12:44:26 am
http://youtu.be/tyQ-BM7sXy0

The gate could be controlled via pwm and a cap via an optocoupler,  I don't see why not ?

7  Using Arduino / General Electronics / Re: High Voltage Regulation on: April 18, 2014, 11:49:58 pm
I think I confused myself...

The triac can be used to deliver variable amounts of current based on a pwm & cap low pass, giving varied control no? Ie current controlled you talk like they're fets.

8  Using Arduino / General Electronics / Re: High Voltage Regulation on: April 18, 2014, 08:52:44 pm
Optoiolator and a Triac.

Pwm and a low pass capacitor to control the gate on the triac.

9  Using Arduino / General Electronics / blackout circuit - 300ma cc circuit on: April 18, 2014, 08:28:23 pm
After a slight redesign here it is, the trick is to getting the transistors to fully switch off not to waste current, unlike polymorphs circuit, mine is higher powered for  300ma LEDs, using a 12v supply placing leds in series might be the way...

10  Using Arduino / General Electronics / Re: criticism over my circuit.. on: April 17, 2014, 06:29:12 pm
Not at that moment in time lol .. sorry
11  Using Arduino / General Electronics / Re: criticism over my circuit.. on: April 17, 2014, 02:19:44 pm
They missed the point (as most do in this field) that the 5v source could simply be a 5v signal from any logic voltage source, no arduino required oh well.
12  Using Arduino / General Electronics / Re: criticism over my circuit.. on: April 17, 2014, 02:16:26 pm
Hmmm, here's the response. ..

13  Using Arduino / General Electronics / Re: criticism over my circuit.. on: April 17, 2014, 01:34:57 am
Here's the screen shots, I've also publically released it to everycircuit's community for other hardware designers to see..

But it's very low power smiley thanks
14  Using Arduino / General Electronics / Re: criticism over my circuit.. on: April 16, 2014, 11:16:17 pm
Nice!..... thanks I'll stick it into the simulator and checkit out smiley
15  Using Arduino / General Electronics / Re: Need a battery source on: April 16, 2014, 10:42:12 am
I've soldered tabs with a regular iron, just be quick about it...

I put a 16340 cell by accident wired directly to a switching regulator (pumping over 2 amps in for a good 20 minutes) , by the time I realized, the cell was a mini oven, which I quickly tookoutside... lithium cells can take a beating and are not as risky as most people portray them to be! But still I'd never leave the home alone with them charging, except my arduino charger which feeds 150ma cc/cv, it's slow but the batteries thank me for it, less heat less energy waste more cycles better battery life etc..

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