Half Wave Rectifier Circuit Using Op amp Simulation Using LTspice


Definition: The half wave rectifier circuit is a rectifier circuit, which converts an ac voltage to dc voltage.
These circuits are called half wave rectifier because it generates output of half cycle for input of full cycle. Another half cycle is wasted.

Positive half wave rectifier

Input and output waveform of positive half wave rectifier


Negative half wave rectifier
Input and output waveform of negative half wave rectifier

Working principal: For both circuit Vin is input voltage applied to non inverting terminal of OP AMP. Output is Vout, feedback to inverting terminal of OP AMP. Open loop output is Vo'. Closed loop connection is formed by connecting a diode (D) between Vo' and Vout. Voltage drop at diode is  Vd. R is load resistor. 
For positive half wave rectifier, when Vin is positive diode is forward biased i.e. diode is on, it closes the feedback loop, output is positive. When Vin is negative diode is reverse biased i.e. diode is off, it opens the feedback loop, output is zero.
For negative half wave rectifier, when Vin is positive diode is reverse biased because the position of diode is reverse in this circuit, so diode is off, it opens the feedback loop, output is zero. When Vin is negative diode is forward biased i.e. diode is on, it closes the feedback loop, output is negative.

Application: The primary application of rectifiers is to derive DC power from an AC supply (AC to DC converter). Virtually all electronic devices require DC, so rectifiers are used inside the power supplies of virtually all electronic equipment.

Simulation: LTspice is the best free simulation software supported by Linear Technology. we will draw schematic diagram and do simulation using LTspice simulator. For more details please visit the below link.

For more details on half wave rectifier , please visit: Half Wave Rectifier Using Op Amp .
For more details on rectifier circuit please visit: Rectifier Circuit Design - YouTube.
To learn more please visit: It’s All About Electronics.

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