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Tunnel Diode Working Principle

S Bharadwaj Reddy
A tunnel diode or Esaki diode is a type of semiconductor that is capable of very fast operation, well into the microwave frequencyregion, made possible by the use of the

Laser Diode Working Principle

S Bharadwaj Reddy
A laser diode, or LD also known as injection laser diode or ILD, is an electrically pumped semiconductor laser in which the active laser medium is formed by a p-n

Photodiode as Variable Resistance Device

S Bharadwaj Reddy
The photodiode is a device that operates in reverse bias, as shown in Figure. where Ia is the reverse light current. The photodiode has a small transparent window that allows light

Varactor Diode Operation

S Bharadwaj Reddy
The junction capacitance of diodes varies with the amount of reverse bias. Varactor diodes are specially designed to take advantage of this characteristic and are used as Voltage Controlled capacitors rather

Zener Diode Voltage Regulator Operation

S Bharadwaj Reddy
The zener diode can be used as a type of voltage regulator for providing stable reference voltages. In this section, you will see how zeners can be used as voltage references, regulators,

Zener Diode Breakdown Characteristics

S Bharadwaj Reddy
The symbol for a zener diode is shown in Below Figure. Instead of a straight line representing the cathode, the zener diode has a bent line that reminds you of the

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