Transistor very useful for testing the circuit, but I do not know more pic programming with atmel series in seeing this type of advanced applications get confused :) Transistor test circuit, BJT, MOSFET, triac, thyristor, JFET transistors and diodes... Electronics Projects, Transistor Tester Circuit ATMega8 LCD Display "atmega8 projects, avr project, microcontroller projects, " Date 2019/08/02