A circuit that adds positive or negative D.C. voltage to an input sine wave is called:
Correct answer: A. Clamper
- A. Clamper
- B. Clipper
- C. Diode clamp
- D. Limiter
Explanation
A clamper is an electronic circuit that changes the DC level of a signal to the desired level without changing the shape of the applied signal. In other words, the clamper circuit moves the whole signal up or down to set either the positive peak or negative peak of the signal at the desired level. So, only option A is correct.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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