[0-30 Vdc Stabilized Power Supply]

Hello everyone!

I'm going to make this very nice power supply, mainly after lot of modifications to improve its quality!

I was thinking if is possible to use a 15+15 VAC xformer... but with a relay to switch beetween 15Vac or 30Vac to feed the AC input and keep it away from excessive heat...

The idea is to place a comparator on central pin of P1, if U is less than 5V (15V at out) relay remains OFF and feeds power supply with 15VAC at the bridge... if greather than 5V (15V at out) then the relay turns on and feeds the bridge with 30VAC.

What you guys think about it ?

Will the power supply works with 15VAC ? (maybe use lower value for 10V 1W zener?)

thanks!

[Re: 0-24V/0-5A Lab Power Supply]

Pretty nice project !

What you use to make the indicators ? (voltage and current) ICL7107 ?

Could you share the gerber of your board ?

I was thinking about make the 0-30v 3A project, but after see yours... I change my mind ! going to make your design.

Thanks alot !

[0-30V Stabilized Power Supply]

But I can't just use 24VAC and get a maximum output of 25VDC ? I'll need to make modifications to the circuit ?

thanks !

[0-30V Stabilized Power Supply]

The voltage from your 24VAC transformer will allow the project to have a regulated max 25VDC output if the main filter capacitor has a high value. Add more output transistors and driver transistors for more Amps. The value of R7 determines the max adjustable Amps.

If your transformer has two 24V windings the one can be used for a positive supply and the other can be used for a negative supply or for a second supply.

Which circuit will you make? The original circuit in the project has errors.

AudioGuru,

I'm going to make the circuit of this thread (posted by Redwire and your partlist with red comments) is this ok ?

My transformer is 12+12VAC

How much current can I drive of each output transistor ?

thanks
Marcelo

[0-30V Stabilized Power Supply]

Hello Guys !

I have a 24Vac x 25A transformer...

What I need to make to have more than 0-3A at output ? Let's say 0-5A

How much DC regulated can I expect with 24Vac at input ?

I'll make two boards and have a dual output power supply... there is a lot of "Amps" from my xformer :)

Thank you!