Biased Negative Clipper

As stated earlier, a circuit with which the waveform of the applied signal is shaped or removed is known as a clipping circuit.

A biased negative clipping circuit is a circuit that removes a small portion of the negative half cycle of the signal voltage.

                                                         Biased Negative Clipper

Operation of a Biased Negative Clipper:

During the positive half cycle, the diode remains reverse biased which makes it an open. Therefore, there will be no flow of current through it, thereby making the entire the positive half cycle to appear across the load.

During the negative half cycle, the diode conducts heavily as long as the input voltage is less than -V with respect to polarity.

When the input voltage is lesser than -V, the diode behaves as a short, thereby blocking an waveform from entering or appearing across the load.

For this reason, the output will remain -V as long as the input voltage is less than -V.

If the input voltage becomes greater than -V, the diode becomes reversed biased and returns to being an open, thereby pushing the input voltage across the load.

In this way, the biased negative clipper removes the input voltage lesser than -V.