Multivibrator Essay
MULTIVIBRATOR USING TRANSISTOR
Saurin Shah (13BEC168)
Electronics & Communication Engineering Institute of Technology Nirma University, Ahmedabad-382481, India 13bec168@nirmauni.ac.in
Abstract- In Multivibrator introduction of Multivibrator, Working of Bistable, Monostable, Astable Multivibrator and Application of Bistable is RS Flip-Flop, Application of Monostable is PWM with IC 555, Application of Astable Multivibrator is Oscillator.
Keywords-Multivibrator, Transistor, Resisters, Capacitor.
I. INTRODUCION
A Multivibrator is an electronic circuit that generates square, rectangular, pulse waveforms, also called function generators. Multivibrator is basically a two amplifier circuits arranged with regenerative feedback. In Bistable Multivibrator having two stable states. This Multivibrator remains in any of two stable states. The state of the Multivibrator can be changed by applying triggering pulse. In Monostable Multivibrator having only one stable state. Its state can be change temporary by applying triggering Pulse. After same time the circuit come back into original
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The state can be changed with the application of proper triggering pulse. It returns to the original state after some definite time period. RC1 & RC2 are collector resistors. Capacitor C is connected between collector of Q1 & VCC supply through R. (Base Resistor) Base of transistor Q1 is connected –VBB supply through R2. The small capacitor connected across R1 to improve switching of transistor. Transistor Q2 get bias through Resistor R. So, transistor Q2 is ON and its collector at 0 Volt. So the base potential of transistor Q1=-6V.So, Q1 is OFF. The collector voltage on the collector of Q1=+12V.So,left side plate of capacitor is positive with respect to Right Side Plate(b).So, Q2 is ON and Q1 is OFF is one stable
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