Making an adjustable “lab” power supply from scrap

Had an old power supply board lying around that was ripped from dead/old printer. PSU model is CZ57PSE EPSON

C257PSE

To make it work one should connect PSC line to ground.

Schematics of similar power supply:

CZ57PSE schematics
CZ57PSE schematics

To regulate output, made an adjustable voltage regulator using LM2575 that was ripped of some dead router or something similar:

lm2575
lm2575

Finished power supply in a box:

Regulated power supply
Regulated power supply
Regulated power supply
Regulated power supply
Regulated power supply
Regulated power supply
Regulated power supply
Regulated power supply

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