Mayalab Instrument

PN junction diode is a semiconductor device that allows the flow of electric current in one direction and blocks the flow in the opposite direction. It is created by joining two types of semiconductors – P-type and N-type – together. The interface between the P-type and N-type regions is known as the PN junction.

analog null detectors or null meters have been used in electrical metrology to measure small voltage differences between two points or to detect a zero current condition where the voltages at two points are the same.