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:
This design allows the unit to be lightweight while still delivering the low-noise output required for sensitive audio or RF circuits. wannien 101v0 power supply schematic verified
In the world of budget-friendly benchtop power supplies, the Wannien 101V0 has carved out a unique niche. Known for its compact size, adjustable voltage range, and surprisingly robust build quality for its price point, it has become a staple for hobbyists repairing smartphones, testing LEDs, or powering small circuits. However, like many mass-produced units, the Wannien 101V0 suffers from a common plague: a lack of official documentation. The Wannien 101V0 is not a pure linear
If you are reading this, you have likely experienced the frustration of a blown capacitor, a failed transistor, or a mysterious short circuit. You have scoured forums, translated Chinese datasheets, and found nothing but dead ends. The good news is that after extensive reverse engineering and cross-referencing, a verified, accurate schematic for the Wannien 101V0 power supply is now available. This design allows the unit to be lightweight
This article provides the verified schematic details, explains the key components, and offers a troubleshooting guide based on real-world testing.
This document summarizes a verified power-supply schematic for the Wannien 101V0 device, highlights key design elements, lists component values and protections, and provides practical notes for builders and troubleshooters.
If you have drawn your own schematic from a broken Wannien 101v0, use these verification checkpoints from our verified board.