DIGITAL POWER SUPPLY

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I HAVE SEEN AN ARTICLE OF BUILDING A POWER SUPPLY OF 0-30 V/3A USING ATtiny26
DOES ANYONE KNOWS SOMETHING ABOUT?
HOW CAN I FIND THE SOURCE CODE FOR THE ATtiny26?
REGARDS

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hmm... well if the source code wasn't pasted with the schematics you probably won't. since the code has to match this exact circuit.

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Daliakos1,

YOUR CAPSLOCK IS STUCK: PLEASE UNLOCK.

A GIF is worth a thousend words   They are called Rosa, Sylvia, Tricia, and Ulyana. You can find them https://www.linuxmint.com/

Dragon broken ? http://aplomb.nl/TechStuff/Dragon/Dragon.html for how-to-fix tips

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There is an extensive recent thread on AVR-controlled "digital" power supply. I think it is in the Off-Topic Forum. At least one had Mega8 code with it. Search the thread out.
https://www.avrfreaks.net/index.p...

Lee

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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Can you tell us where did you find this circuit? Maybe then you will get more help.

Pop

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I found this in a local Creek electronics magazine .
The magazine company normally supplies staff to built the items from the articles, but in this case the can't.
Unfortunately the article is in Creek and is quite big so is difficult to translate, but us u can see from the picture of the ps it must comes originally from a company named "digitec electronics".
Thats all i know !

Dimitris
:?

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Then they probably supply the Tiny26 already programmed. It's common.

Embedded Dreams
One day, knowledge will replace money.

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I just ordered and built a similar power supply from tuxgraphics.com. Schematics and source code are downloadable. The original specs are for a bit less (30A, 2.5A), but the you can stretch the limit, if you provide enough cooling (large heatsink).

Markus

Markus

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Markus
Thanks it's an interesting option !

Dimitris

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Markus, have you done any tests on the power supply? I have seen the tuxgraphics before and wondered how good it is. It would be interesting to see its response times to short circuits and its load regulation.

Trev

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I'm running it on an older IBM laptop power supply I've had lying around. I was not stretching it to the limits because I haven't got a decent heat sink. I ordered one, will be here in a couple of days. The voltage regulation seems to work fine so far, current limiting work well too. I have not measured with external instruments except to calibrate the Voltage.
There is not hardware current limiter, so if you short circuit the output you'll get the max current your 'upstream' source can supply until the software loop kicks in. On improvement would be to add a specific short circuit current limiter just for this case.

I'm thinking about doing a similar kit, but as a switching regulator. Mainly to cut down on lost energy in the heatsink. A hardware current limiter/cut-off is part of the plan.

Markus

Markus

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Just forgot one thing: I've rewritten the way the keyboard is handled in the main loop. The original firmware has a sluggish response it takes ages to get from 100mA to 1A current limit (200ms per 10mA step..).

The positive point is that the software is well written, with decent comments, etc. It is not too complicated to change things.

Markus

Markus