Wannien: 101v0 Power Supply Schematic [patched]

Wannien 101V0 Power Supply — A Thought-Provoking Overview and Practical Guide

The "Opto" Feedback:

It uses an optocoupler (usually a PC817) to "talk" across the high-voltage gap. This allows the low-voltage side to tell the high-voltage side to "slow down" or "speed up" to keep the voltage steady. The Cult of Repair

  • MOV (Metal Oxide Varistor): Often missing. If a lightning strike or surge occurs, the unit will blow up instead of just shorting the MOV.
  • NTC Thermistor: Often missing. This prevents "inrush current." Without it, plugging the unit in can cause a visible spark at the socket and stress the bridge rectifier.

Internal Circuitry

: The board is designed around standard switching power principles, featuring a primary side for high-voltage rectification and a secondary side for regulated low-voltage output (typically 5V and 12V DC). wannien 101v0 power supply schematic