Wannien 101v0 Power Supply Schematic Verified Jun 2026

If the output voltage is "pumping" (fluctuating rapidly), the issue is often a faulty optocoupler or a dried-out capacitor on the PWM controller's VCC pin. 4. Safety Warning

Usually mounted on a heatsink. Check for shorts between the Drain and Source pins. wannien 101v0 power supply schematic verified