Negative Clamping Circuit: Can you explain why the output voltage gets shifted down logically?

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Negative Clamping Circuit: Can you explain why the output voltage gets shifted down logically? 

Negative Clamper
A Negative Clamper circuit is one that consists of a diode, a resistor and a capacitor and that shifts the
output signal to the negative portion of the input signal. The figure below explains the construction of a
negative clamper circuit.
dt
Vm
-Vm-
Input Waveform
D
Vo = V₁ + Vm
R
T₁
Vo
Negative Clamper circuit
M
Output Waveform
-Vm
-2Vm
During the positive half cycle, the capacitor gets charged to its peak value Um . The diode is forward
biased and conducts. During the negative half cycle, the diode gets reverse biased and gets open
circuited. The output of the circuit at this moment will be
Transcribed Image Text:Negative Clamper A Negative Clamper circuit is one that consists of a diode, a resistor and a capacitor and that shifts the output signal to the negative portion of the input signal. The figure below explains the construction of a negative clamper circuit. dt Vm -Vm- Input Waveform D Vo = V₁ + Vm R T₁ Vo Negative Clamper circuit M Output Waveform -Vm -2Vm During the positive half cycle, the capacitor gets charged to its peak value Um . The diode is forward biased and conducts. During the negative half cycle, the diode gets reverse biased and gets open circuited. The output of the circuit at this moment will be
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