+12V output ---[Resistor Divider]---(TL431 Shunt Regulator)---[LED side of PC817 Optocoupler]---(GND)
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Wannien 101v0 Power Supply Schematic | PDF - Scribd
Each transistor switch is governed by a precise trigger circuit. This allows downstream sub-systems (such as monitor mainboards or industrial logic gates) to turn specific power Rails on or off independently. Component Overview and Functions
| Component | Value | Role | |-----------|-------|------| | F1 | T3.15A 250V (slow-blow) | Input protection | | BD1 | GBU806 (8A 600V) | Bridge rectifier | | C5, C6 | 220µF 200V (x2) | Bulk storage | | Q1, Q2 | MJE13007 (or 13009) | Switching transistors | | C14, C15 | 330nF 250V (x2) | Half-bridge capacitors | | T1 | EI33 or EE35 core | Main transformer | | D9, D10 | MBR20100CT (20A 100V) | Output Schottky | | U1 | TL494CN | PWM controller | | U2 | PC817C | Optocoupler | | U3 | TL431 | Voltage reference | | L1 | 3.3µH (yellow-white toroid) | Output filter inductor | wannien 101v0 power supply schematic
The serves as the technical map for a highly dependable power board widely utilized across various electronic hardware, industrial devices, and specific computer monitor displays. Often recognized alongside its UL file number or board designation, E88653 , this board is a staple for technicians dealing with power supply maintenance.
Once the voltage crosses the transformer, it is still a high-frequency AC wave, just at a much lower voltage.
If you can provide:
Draw connections from the IC pins using datasheets:
Expelled electrolyte fluid or domed top vents on the output filter capacitors.
After repairs, always use a (40W-100W incandescent) in series with the AC line. If the bulb stays bright, you still have a short. Can’t copy the link right now
When working with the Wannien 101V0 power supply schematic, keep the following tips in mind:
: Locate the main entry point on the circuit board. Trace the lines through the fuse and input inductors. If the fuse is clear, move down the circuit.
Set your digital multimeter (DMM) to .
A particularly valuable and reliable resource was a , which uses the same Wannien 101V0 board as the malfunctioning 500VA model. Because the 101V0 was unlabeled on the faulty unit, the known-good board from the 800VA UPS was used to physically locate and identify the correct component values, confirming that R13 is a 10kΩ resistor .