PN Junction Diode for rrb je electronics

PN junction Diode is formed by joining P type semi conductor and n type semiconductors. Due to diffusion of electrons and holes from P region and N region a depletion layer is formed in between P type and N type semiconductors. This region consist of positive and negative ions. Where positive ions aligned on the …

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[MCQ] Conductor, Semiconductor and Insulator rrb je electronics

This post contains all the theoretical explanations of conductor, semiconductor and insulator, followed by a Mock Test with Multiple Choice Questions . Difference between Conductor, Semiconductor and insulator parameter Conductor Semiconductor Insulator Resistance Low medium High Conductance High medium Low Temperature +ve temp coeff. -ve temp coeff. -ve temp coeff. Current High medium Low Free …

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HARTLEY OSCILLATOR

Hartley  oscillator is a type of LC oscillator which is widely used as a local oscillator in radio receivers. Hartley oscillator was invented in 1915 by the American engineer Ralph Hartley. Figure shows the circuit diagram of a Hartley oscillator. It consists of single stage inverting amplifier and L-C phase shift network.  The phase shift …

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COLPITTS OSCILLATOR

Colpitts oscillator is a type of LC oscillator which is designed for the generation of high frequency sinusoidal oscillations with the radio frequencies. Typically ranging from 10KHz- 300MHz. Colpitts oscillator is designed by and named after an American Engineer Edwin H Colpitts in 1918. Figure shows the circuit of a colpitts oscillator.  It consists of …

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Wien Bridge Oscillator Explanation

The wien bridge oscillator is a type of RC oscillator, that produces the sinusoidal output.  It is commonly used in audio and Sub-audio frequency ranges, that is 20- 20KHz. The maximum frequency of the output of a wien bridge oscillator is only about 1MHz. Circuit Diagram explanation of WIEN BRIDGE OSCILLATOR It has two stage RC …

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