0-30V Stabilized Power Supply

[wandows]

Hello everybody! I would like to count on the help of friends!!!

In the offset adjustment, my power supply has the output voltage >= 32.9V, and does not reduce to 30V.

Any tips on what can be done to solve this problem?

[gixap92915]

I only have unused 15V-18V-20V-24V-CT 5A transformer, how to get it working with liqubyte's 0-30V-rev-8 schematic?

What parts I have to replace/add?

Also does liqubyte's 0-30V-rev-8 is the last stable revision?

Thanks.

[a.devincentiis]

Hi everybody,
I improved by digitizing this circuit and replaced the final stage with that of the equally famous K7200.

You can scale it both in voltage and current by changing a few components because the three opamps are always powered at 27V

Sorry, article is not complete and not yet translated into English

 

[paul .a larner]

can someone tell me how to connect an external rectifier to this?,i have one like an alluminium block with one corner chamfered representing + out from the bridge,can anyone tell me what points to connect what place on the pcb to,a pic would be best,thanks Paul l.

[paul .a larner]

anyone?.

[paul .a larner]

seems to be dead here!

[user469]

On 1/7/2021 at 3:25 PM, HarryA said:

The best you can do is to start at the  output transistors and work your way back through the circuit. It is impossible to diagnose homemade circuits at a distance as there are just to many places to go wrong.

For others never build something you can buy cheaper. Get two at 8$ each - one for parts.

https://www.ebay.com/itm/Stabilized-Continuous-Adjustable-DC-Regulated-Power-Supply-Kit-0-30V-2mA-3A-L/353345066780?hash=item524501d71c:g:JjsAAOSw~QteWLkt

 

Hi am new here, i recently bought the kit, its ok to use schema and part list rev 7 for 3A with two output transistors ?

I plan to use a pair of 2N3055 or there is a better choiche ? Thanks

[Qasim Latif]

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