Also check and Elektroda – search by the PCB silkscreen number (look for a number like W-101V0-A or similar on the board edge).
| 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
Look for additional text on the PCB or casing: Also check and Elektroda – search by the
: The "94V-0" marking on the board is a UL flammability rating , indicating the circuit board material's fire resistance, rather than a specific model number. Typical Circuit Architecture
: Widely used in industrial automation, LCD monitor repairs, and laboratory experiments where stable, adjustable voltage is required. Typical Circuit Architecture