Application of Rectifiers in Measuring Instruments

Application of Rectifiers in Measuring Instruments Points : Application of Rectifiers in Measuring Instruments A moving coil permanent magnet type instrument with some rectifier arrangement may be used, for measurement of audio-frequency alternating current so or voltages. These instruments are indispensable for measurements in communication required for their operation is small enough to be within the capacities of the circuits.

The rectifier element usually consists of a germanium or silicon diode. Copper oxide and selenium rectifiers have become obsolete, because they have small inverse voltage ratings and can handle only limited voltage of order of 300V and a current rating of about 100mA. Low current silicon diode rectifiers have a peak inverse voltage of up to 100V and a’ current rating of the order of about 500mA,