A type of diode that emits light when there is forward current. The back operation of the LED is as follow.

The LASCR is triggered into the Conduction state when the light falls on it, the operation of LASCR is similar

Induction heating is the process in which heat is produced inside a conducting material (magnetic & non-magnetic), according to the

The insulated gate bipolar transistor (IGBT) is a device which combines the fast acting features and high power capability

Glucometer stands for Glucose meter. This instrument is used to check the % value of sugar in the blood of a human body.

FET stands for "Field Effect Transistor" it is a three terminal uni polar solid state device in which current is controlled by an electric field.

As shown in the below diagram, the direct coupled amplifier (DC) is consist of two transistors Q1 and Q2 , a voltage divider

To heat that material which can not conduct electrical current, in this process heat is produce in non conducting materials internally.

DIAC is two terminal four layer semiconductor device (Thyristors) that can conduct current in either direction, when polarity is active.

The main property of the DC voltage regulator is, if there is any change in the I/P voltage, the O/P of the voltage regulator will be constant.