Testing the donated transistor tester (smart component tester) based on Atmel AVR ATmega328P microcontroller. It can auto-detect and test semiconductors - bipolar transistors (NPN, PNP), MOSFETs, thyristors (SCRs), triacs, diodes and double diodes including Schottky, LEDs and two-color LEDs, Zener diodes below 5V and even IGBT transistors with gate threshold voltage below 5V. It also tests and measures passive components - resistors, potentiometers, inductors (inductance and DC resistance), capacitors (capacitance, ESR, Vloss), and maybe more. It also has some extra functions like a voltmeter, frequency meter, signal generator and PWM generator.
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