The Wannien 101v0 is a generic workhorse. Don’t waste days hunting for an exact PDF. Identify the PWM IC (likely UC384x), download a reference design from ON Semiconductor or Texas Instruments, and match component values.
Loose or corroded wire pins on the multi-pin connector headers. Step 2: Cold Resistance Tests (Unpowered) Using a digital multimeter in continuity or diode mode: wannien 101v0 power supply schematic
: Galvanically separates the lethal high-voltage primary side from the safe, low-voltage secondary side. The Wannien 101v0 is a generic workhorse
A standout feature of the 101v0 board is its four independent transistor switch circuits . These discrete transistors control dedicated outputs labeled out1 through out4 . Loose or corroded wire pins on the multi-pin
: High-voltage incoming power passes through a protective fuse, metal oxide varistors (MOVs) for surge suppression, and an electromagnetic interference (EMI) filter.
Ensure the primary power source feeding the Wannien board stays within its recommended tolerances to avoid triggering built-in Over-Voltage Protection (OVP) loops.