Can the amperage of this power supply module be modified to increase?

electronium · Apr 17, 2024

Greetings to the colleagues of the forum
I have prepared a 0-30V 3A power supply module, which is a maximum of 3A. Is it possible to increase the amperage and use it by modifying and changing the circuit elements? How and how is it possible?

Link to the relevant site

Nigel Goodwin · Apr 17, 2024

Not easily, and it's already VERY poorly designed, there are a number of threads on these forums discussing how to cure it's design flaws.

electronium · Apr 17, 2024

Nigel Goodwin said:
Not easily, and it's already VERY poorly designed, there are a number of threads on these forums discussing how to cure it's design flaws.

My engineer has been using this module for how long. Just tell me which part needs to be replaced or the circuit needs to be edited. Thank you.

ZipZapOuch · Apr 17, 2024

Put two or more in parallel.

crutschow · Apr 17, 2024

electronium said:
tell me which part needs to be replaced or the circuit needs to be edited.

That's neither practical or economical to do.
Just get a supply with the current rating you need.

Why isn't your "engineer" doing this?

electronium · Apr 17, 2024

crutschow said:
That's neither practical or economical to do.
Just get a supply with the current rating you need.

Why isn't your "engineer" doing this?

good time..
I have prepared and use this module, but I don't know how to do it... to increase the amperage

audioguru · Apr 17, 2024

That very old circuit design was recently copied by the Chinese. It never produced an output of 30VDC at 3A because it always had overloaded parts and had too much voltage and current losses. If you increase the output current then you increase the overloading, increase the losses and cause the circuit to burn out sooner.

crutschow · Apr 17, 2024

electronium said:
I don't know how to do it... to increase the amperage

Why do you not understand that we have told you that's not really feasible?

audioguru · Apr 18, 2024

For a 5A maximum output, I calculated these changes many years ago:

crutschow · Apr 18, 2024

audioguru said:
For a 5A maximum output, I calculated these changes many years ago:

In post #7 you say it's a problem to do that and now you show how it can be done, so which is it?

Nigel Goodwin · Apr 18, 2024

crutschow said:
In post #7 you say it's a problem to do that and now you show how it can be done, so which is it?

Both, he said (and so did I) that the original design is seriously flawed, his latest post lists the corrections to remove those flaws, and increase current capability.

xmanhattan · Apr 18, 2024

Hello, I'm new to this forum and sad to say that I bought that ps too after reading this post.
Just wanted to say hello for now.

schmitt trigger · May 1, 2024

xmanhattan said:
Hello, I'm new to this forum and sad to say that I bought that ps too after reading this post.
Just wanted to say hello for now.

Don’t worry too much!
Make mistakes and learn. That’s the mantra of the electronics hobbyist everywhere.

Can the amperage of this power supply module be modified to increase?

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