S36012 Power Supply Circuit Diagram [new] -
is a widely used high-power switching mode power supply (SMPS) designed to deliver a stable output at currents up to , providing a total power capacity of
READ I_sense from MOSFET_Source IF I_sense > Limit THEN TRIP Over_Current_Protection STOP PWM_Generation END IF END FUNCTION s36012 power supply circuit diagram
Conclusion
repair
Are you looking to a specific fault in your unit, or are you planning to modify the voltage output for a different application? is a widely used high-power switching mode power
- No output, blown fuse: Check bridge rectifier (BD1) and switching transistors (Q1/Q2) for shorts.
- Output clicks / ticking: The TL494 is in hiccup mode. Check secondary Schottky diodes for short or output capacitor for low ESR.
- Low output voltage (<10V): Failed start-up capacitor (50V/10µF near TL494) or bad optocoupler.
- Excessive ripple: Replace the two large 16V/4700µF output caps.
- No adjustment via potentiometer: Broken TL431 or damaged feedback resistor network.
- Input & EMI Filtering: Removes noise from the AC line.
- Rectification & PFC: Converts AC to high-voltage DC (approx. 390V).
- Switching Transformer & Controller: Isolates the voltage and steps it down.
- Output Rectification & Regulation: Provides clean DC output.
Below is a functional breakdown of the circuit diagram, which can be divided into five key stages. No output, blown fuse: Check bridge rectifier (BD1)
