9-40E5 D
What are the input/output voltages of a "BUCK" switching power supply with a 50% duty cycle?
A. 120 volts in, 240 volts out.
B. 24 volts in, 36 volts out.
C. 12 volts in, 12 volts out.
D. 10 volts in, 5 volts out.
