Resistor |
A resistor is a device which resists the flow of current in a circuit, thus reducing the voltage available to the load. |
The conventional regulator of a fan is a resistor. |
Capacitor |
A capacitor is a storage device which may be used as a timer, phase splitter etc. |
All domestic fans have capacitors to split the phase of AC, the starter of a flourescent tubelight is a capacitor. |
Inductance |
An inductor is a device which resists changes in electric current passing through it. It consists of a conductor such as a wire, usually wound into a coil. Note that an inductor opposes change in current while a resistor just resists the flow of current. |
The choke of a tube light is an inductor. |
Transformer |
A transformer is a device that transfers electrical energy through electromagnetic induction. Transformers may be used to increase or decrease the alternating voltages in electric power applications. |
A voltage stabiliser, a mobile charger etc contain a transformer. |
Diode |
A diode is device that restricts the flow of electric current in only one direction. |
Diodes are commonly used in rectifiers which are used to convert A.C. (alternating current) to D.C. (direct current) |
Transistor |
A transistor is a device usually made from semi-conductor material used to control the flow of current. |
Transistors are commonly used as amplifiers and have variety of uses in electronic equipment like radio, tv etc. |