abbey road d enfer

Re: 10 amp psu regulator
« Reply #40 on: July 24, 2019, 04:07:28 PM »
Hi!

Another idea/option for an 8amp PSU is a pass transistor design. I found a schematic  with lm317/337 and bdx53c/5The problem the overcurrent protection does not work anymore in case of short-circuit.
Who's right or wrong is irrelevant. What matters is what's right or wrong.
Star ground is for electricians.


JAY X

Re: 10 amp psu regulator
« Reply #41 on: July 24, 2019, 05:16:52 PM »
Hi!

Hmmm, ok.
Sometimes i try different ideas, and get back to the original...
Another one... what if i replace the pass transistors with an Lm338 for both sides +/-V? So, lm317/337as regulators, and LM338 as pass transistor....

abbey road d enfer

Re: 10 amp psu regulator
« Reply #42 on: July 25, 2019, 04:34:46 AM »
Hi!

Hmmm, ok.
Sometimes i try different ideas, and get back to the original...
Another one... what if i replace the pass transistors with an Lm338 for both sides +/-V? So, lm317/337as regulators, and LM338 as pass transistor....
You'll have the same problem that LM338 is not really capable of handling the dissipation. Added complexity for no improvement otherwise.
Who's right or wrong is irrelevant. What matters is what's right or wrong.
Star ground is for electricians.


 

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