Wannien 101v0 Power Supply Schematic Verified Best

Troubleshooting the Wannien 101V0 Power Supply: A Quick Guide Finding a verified schematic for the Wannien 101V0 (often labeled as or associated with the

The Core Topology: Hybrid Linear-Switching Design

The Wannien 101V0 is not a pure linear supply (which would be heavy and inefficient) nor a pure switching supply (which can be noisy). Instead, it uses a hybrid topology: wannien 101v0 power supply schematic verified

If you are looking at a verified schematic for this board, it likely follows a standard Switch Mode Power Supply (SMPS) topology: Troubleshooting the Wannien 101V0 Power Supply: A Quick

Disclaimer: This article is for informational purposes. Working with AC mains voltage and high-capacity capacitors can be lethal. Always discharge bulk capacitors before probing and use an isolation transformer. Startup resistor: 4

• Startup resistor: 4.7M (R4)
• PWM IC: LD7750R (not LD7535, not 3842)
• Sense resistor: 0.22 Ohm (R17)
• Output caps: 2x 1000uF/35V

Typical component values and parts (illustrative, verify against board)

• Input bulk: 100–470 µF electrolytic (25–50 V rating) for rectified mains; 10–100 µF for adapter input.
• Switching inductor: 10–100 µH depending on switching frequency and load.
• Output caps: 10–220 µF electrolytic + 0.1–1 µF ceramic decoupling.
• Schottky diode for catch: rated > diode average current (e.g., 3–10 A depending on rail).
• LDOs: 5 V and 3.3 V with dropout margin of at least 0.5 V above required output.
• Fuses: slow-blow 1–5 A depending on expected current draw.