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1. |
The expression for a step-up/step-down chopper with α as the duty cycle and Vs as the dc input voltage is |
A. | Vs/1 - α |
B. | α x Vs |
C. | Vs (α/1-α) |
D. | Vs (α/1+α) |
Answer» D. Vs (α/1+α) | |