Yp-05 Schematic -

Includes a 500mA self-restoring fuse on the USB power line to protect your computer's USB port from over-current or short circuits.

| Test Point | Expected Voltage (No Load) | Waveform | | :--- | :--- | :--- | | Across C1 (primary) | 310-340V DC (if 230V AC input) | Smooth DC | | U1 Pin 7 (VCC) | 12V – 18V DC (stable) | DC | | U1 Pin 6 (Output) | 0.5V – 5V pulse | Square wave, 50-100kHz | | Secondary main DC | 18V – 30V (before regulator) | Sawtooth + DC | | U4 Output | 15.0V ± 5% | Clean DC | | U5 Output | -15.0V ± 5% | Clean DC | Yp-05 Schematic