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A project log for Bench power supply

USB and manual control, and monitoring, 2 channel 5A 30V bench supply.

rue-mohrRue Mohr 11/14/2014 at 03:190 Comments

I have to admit, every time a new person starts following this project I do or post some more progress. :) so thankyou. (your driving this project)

ok, last weekend, I re-tested the current sensor and made some changes to work with the new amplifiers I got (LMC6....LMC6482), because these are rail-to-rail amps, I dont need a bunch of the fuff I did trying to use an LM324.

I have designed and started the print of a PCB for it.

To get the power supply up and going, I'm going to make the power stage of the system a module, which will be linear for now, and I'll change it out for a switching one later.

It took a lot of work, but I have managed to get a stable, P channel fet, linear regualtor put togethor. Because of the DAC's I'm using the regulator needs a gain of 12, ( the DACs output a 2.5V range) to its reference signal, not much I can do about that (I'd like it to be a ratio of about 6 or 3, 2 would be ok with me).

I'd also like to thank the HaD crew for fixing the .io site to work properly with my browser!

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