Regulated bipolar PSU

103

01:32:06

Regulated, use transformers for your specific country's voltage.

published 6 years ago

PrathikP

6 years ago

"regulated". The reason why I put that in quotes is because a zener and bjt make a crap regulator. Changing the 50ohm load to 100ohm makes the o/p jump up by a volt. Ripple attenuator, yes, but regulator, not really.

hurz

6 years ago

right @PrathikP, there is a difference in "regulating" and "controlling" this is a voltage follower with darlington stage and is a controller not a regulator. For a regulation it needs a feedback. Anyway, most see this kind of circuit as the most simple methode to get a stable or more stable voltage, what it actually is.

westelaudio

6 years ago

Now using 2× Sziklai instead of Sziklai/Darlington for better balance

westelaudio

6 years ago

Yeah it's not the most precise regulator (or controller) but it's good enough for many applications.

westelaudio

6 years ago

Thabks for your input.

alexpu

6 years ago

This is really cool, a lot better than my atx psu converted to bench supply, that thing has horrible regulation!😂 good work!

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