Question Bank (2 marks) · Q21
Q.Sketch the output wave form of a chopper circuit for DC input of 10 V and duty ratio of 75%.
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Rectangular 10 V pulses, ON for 75% of each period and OFF for 25%; average output = 7.5 V.
The output of a DC chopper for a resistive load is a train of rectangular pulses whose height equals the input DC voltage and whose ON-time fraction equals the duty ratio. With a 10 V input and a duty ratio of 75% (), each period has the output held at 10 V for the first 75% of the period () and at 0 V for the remaining 25% (). The av …
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