Classification of amplifiers
The amplifiers are may be classified as under, According to input signal Small signal amplifier. Large signal amplifier. According to coupling methods Inductance coupled (LC) amplifier. Resistance capacitance (RC) coupled amplifier. Transformer coupled (LC) coupled amplifier. Direct
Avalanche photodiode
Avalanche photodiode is basically a PN junction diode which operates in the avalanche breakdown region. Its structure is similar to the PIN photodiode. It is a highly sensitive semiconductor electronic device that utilizes the photo electric effect
Advantages and disadvantages of avalanche photodiode
There are some important advantages of avalanche photodiode are given below, The main advantage of the avalanche photodiode is it has a greater level of sensitivity. There are some important disadvantages of avalanche photodiode are given below,
Potentiometer
What is a potentiometer? The potentiometers are variable linear resistors that deliver an output voltage representing some function of an applied voltage and shaft position. The smaller variable resistors commonly used in electronic circuits are called as
How amplifier is work?
Amplifier is an electronic circuit which produces a large electrical output of similar characteristic that of the input parameters. Amplifier is an electronic device which increases the power of a signal. Amplifier takes the power from a
Difference between PN junction diode and photo diode
Following are the difference between PN junction diode and Photo diode: PN junction diode Photo diode The PN junction diode is operated in forward biased mode. The photo diode is operated in reverse biased mode. It is
How does crystal oscillator work?
A crystal oscillator is basically a tuned oscillator. It uses a piezoelectric crystal as a resonant tank circuits. It is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal of piezoelectric material to create an electrical signal with a precise frequency. The
Application of field effect transistor (FET)
There are some application of field effect transistor (FET) are given below, Field effects transistors (FETs) are used in mixer circuits to control low inter modulation distortions. FETs are used in low frequency amplifiers due to its
How infra red light emitting diode (IR LED) works?
The infra red light emitting diode (IR LED) is a gallium arsenide PN junction diode which emits a beam of radiant flux when forward biased. The infra red LED is also known as IR transmitter. It is
Specifications of bipolar junction transistor (BJT)
There are some important specification of bipolar junction transistor (BJT) are as given below, The bipolar junction transistor (BJT) has small signal current gain, α (hfb). Maximum collector current Ic (max). Maximum collector to emitter voltage, VCE