Wannien | 101v0 Power Supply Schematic

If the 101v0 is a simple transformer-based supply, the schematic would be straightforward. It would feature:

Whether you are a seasoned repair technician or a curious hobbyist, having an accurate schematic transforms the Wannien 101v0 from an unreliable black box into a fully serviceable, long-lasting bench tool. Save this article, bookmark the clone schematics, and keep your power supply running for years to come.

[MAINS INPUT] ---> [Fuse F1] ---> [Power Switch SW1] ---> [Transformer T1] | +-------------------+-------------------+ | | [SEC 1] 0V [SEC 2] 28V | | +----+--------------------+------------+ | | [D1-D4 Bridge] [Aux Winding] | | [C1 (Filter Cap)] [D5,D6 (Aux Rectifier)] | | +----+----+ +----> [+15V Reg (7815)] ---> Op-Amp Vcc | | +----> [-15V Reg (7915)] ---> Op-Amp Vee [POS RAIL] [GND] | +----> [Preregulator (Relay/SCR)] | +----> [Pass Transistor Q1 (2N3055)] | [Base Drive from Op-Amp] | [Output +] ---> [Current Shunt Rshunt (0.1Ω)] | | +----> [Voltage Divider] +----> [Current Sense Amp] | | +----> [LM358 Op-Amp] | [Control Potentiometers] Wannien 101v0 Power Supply Schematic

Measure the base of Q1. It should vary between 0.6V and 38V as you turn the voltage knob. If base is 0V, the op-amp is not driving the transistor.

She added a note: “He never finished drawing it. I finished it for him.” If the 101v0 is a simple transformer-based supply,

Inside: a landscape of scorched copper traces, four swollen electrolytic capacitors (their tops bulging like tiny volcanoes), a cracked TO-220 transistor (label: ), and a resistor so blackened it looked like a piece of charcoal. A puzzle with missing pieces.

The most common reason technicians hunt for the Wannien 101v0 schematic is a "dead unit" diagnosis. Without the schematic, you are effectively operating in the dark. Here is how the schematic guides the troubleshooting process: [MAINS INPUT] ---> [Fuse F1] ---> [Power Switch

Old Mr. Hà, who’d repaired American tank radios during the war, squinted. “Wannien? Ah. Copy of a Lambda LK-350. But they swapped the feedback loop. Look for a 4.7k ohm resistor near the optocoupler.”