This project is a transistor analyzer, suitable for testing both NPN and PNP transistors. Its circuit is simple as compared to other transistor testerswhich is [[wysiwyg_imageupload::]]useful for both technicians and students. It can be easily accumulated on a general purpose PCB. Basic electronic components like resistors, LED’s, diode and NE5555 are used for developing this circuit. Using this circuit, many of the faults can be checked like transistor is in good condition or not, is it opened or shorted, and so on. NE555: As the name suggests, NE 555 is multivibrator IC which is popularly known to work in three modes: astable, monostable and bistable. Also, circuit can work through a battery for a longer duration, without compromising the working abilities or disturbing the normal functioning of the passive components attached.
