A deep dive into the YP2632T circuit diagram reveals several key integrated circuits and power transistors:
| Pin | Name | Description | |-----|------------|-----------------------------------------------------------------------------| | 1 | Gate (G) / Base | Control pin – connected to the PWM controller IC via a resistor (e.g., 10-100Ω) | | 2 | Drain (D) / Collector | High-voltage pin – connected to the primary winding of the flyback transformer | | 3 | Source (S) / Emitter | Ground/power return – usually connected to a current sense resistor (0.1Ω to 1Ω) to ground | Yp2632t Schematic
Most evidence points to an N-Channel MOSFET. However, some low-cost chargers use a bipolar NPN transistor with the same marking. To be sure, test the component with a multimeter in diode mode: a BJT will show two diode junctions (B-E and B-C); a MOSFET will show one body diode (D-S) and open circuit G-S. A deep dive into the YP2632T circuit diagram
The board typically requires an "ON/OFF" signal from the mainboard to trigger the primary power rails. The board typically requires an "ON/OFF" signal from