Articles

VARISTOR:A Type of Resistor

VARISTOR A varistor is a type of resistor in which its resistance is dependent on the voltage applied. The word is composed of parts of the words “VARiable resISTOR” i.e their resistance varies. The resistance of the varistor decreases when the voltage increases. They are made of semiconductors elements. It…

Photo Resistor-Light Dependent Resistor

Some resistors are dependent on physical quantities like light, heat, magnetic force, etc. These resistors can be divided into 4 types which includes: • Photo resistor (LDR) • Thermistors (NTC and PTC) • Varistor (VDR) • Magneto resistor (MDR)   Photo Resistor Photo resistor is an electronic component whose resistivity…

Potentiometer:A Type Of Variable Resistor

A Variable resistor is a resistor that does not have fixed value of electrical resistance, that is the value of electrical resistance can be varied or adjusted.. Variable resistor can be divided into 3 types, they are: Potentiometer Rheostat Trimpot Potentiometer A potentiometer is a 3 terminals variable resistor which…