DIY Bench PSU

[hyper999]

ok i thought it was time i had a reliable bench power supply as part of my new workbench im working on

its going to be based on an atx PSU

first question, any objections, suggestions, improvements, problems with/to this adjustable voltage regulator circuit?


secondly, any ideas for voltage and amp meters?

[Rodent]

http://www.microcenter.com/single_product_results.phtml?product_id=0342848

here is somethiing i just bought to use for different voltages to test and use a atx power supply to power it .

I found this thought it would be useful for testing different things and testing.

is this along the same lines as what your going to build? Or building a power supply ?
Maybe i am confused

[FOOKzâ„¢]

Same thing.

LM317 is just a variable Zener diode regulator.

It's like a 7835 regulator used in a shunt-regulator function to control the output voltage.

hyper's circuit is cheaper and has voltage control.


since you're good at programming pics you might like this circuit: http://electronics-diy.com/70v_pic_voltmeter_amperemeter.php

[Rodent]

Thanks FOOKz, thought maybe I wasnt understanding that. still trying to learn and hope to get back in school I feel so lost when it comes to this:)

[hyper999]

basicly what i want is an adjustable power supply with a volt meter and an ameter built in

since you're good at programming pics

LOL i wish

[FOOKzâ„¢]

basicly what i want is an adjustable power supply with a volt meter and an ameter built in

LOL i wish

better than me.

[Rodent]

better than me.

I wish i had the skills both you guys had and the skills I have now, Knowing is have the battle. once you know you can figure anything out, or it becomes a challenge to you and when you meet the challenge your sucsefull

[frenulem - No.5417]

hyper, i made this on sunday, put it in a lil plastic box, works like a charm

[hyper999]

brilliant i was planning to this weekend i just need panel meters

[Famas]

do you plug this in the mains and is it like school to alter the speed of the drills

[hyper999]

dont know where you got drills from? but my origional design included an PC atx psu the above circuit then runs off the atx's 12v rail and provides adjustable voltage selection

[frenulem - No.5417]

i got it running i think 9-11v cant remember atm