Electronics > Projects, Designs, and Technical Stuff
Need help on understanding the circuit.
Achu:
Hi,
Anybody know how the feedback loop in this circuit work?
I am very unfamiliar with this configuration.
The author claims it helps to connect transistors to the heat sink without insulation.
IanB:
It looks like a regulated power supply circuit with over current protection. Can you ask a more specific question?
IanB:
Also it would be more polite to link to the author's web site rather than copying an image without attribution.
Achu:
Sorry for my "impoliteness".
here's the link
https://ludens.cl/Electron/Ps20/Ps20.html
BTW my question is SPECIFIC.
--- Quote from: Achu on October 13, 2019, 04:39:50 am ---Hi,
Anybody know how the feedback loop in this circuit work?
I am very unfamiliar with this configuration.
The author claims it helps to connect transistors to the heat sink without insulation.
--- End quote ---
T3sl4co1l:
Feedback through the ground symbol. Note it's a low-side regulator. The lack of compensation is particularly concerning/disturbing, as the transistors have voltage gain on top of the op-amp's already high voltage gain. Perhaps this is why he needed to put a huge capacitor on the output.
Tim
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