Automatic component tester with LCD display. Key benefits - Automatically tests pin elements and the LCD, and can determine the positive pre-load of the emitter transistor by detecting gain and related parts such as the MOSFET protection diode. - MOSFET analysis: measures gate threshold voltage and gate capacitance. - Clear results shown on a 12864 LCD display (128 x 64 characters) for easy reading. - Fast testing: most components are tested in about 2 seconds; large capacitors may require longer measurement time. - Startup voltage detection added for reliable startup checks. - Automatic component identification: detects NPN and PNP transistors, N- and P-channel MOSFETs, diodes (including dual/dual diodes), thyristors, resistors, capacitors, and other components. Use scenarios - Repair bench testing: quickly verify transistors, diodes, MOSFETs, and other parts while debugging PCB circuitry. - Power electronics development: characterize MOSFET gate threshold and gate capacitance to select parts and validate designs. - Incoming component inspection: perform fast pre-checks on batches of resistors, capacitors, diodes, transistors, and more before assembly.