Regulated Power Supplies » Exercise – 2
51. A switching regulator that is configured as a voltage-inverter produces what type of output?
(a) an ac output with opposite phase to the input ac
(b) a dc output that is the negative of the dc input voltage
(c) an output that is a higher voltage than the input voltage
(d) an ac output from a dc input voltage
55. What type of regulator offers inherent short-circuit protection?
(a) shunt regulators
(b) series regulators
(c) three-terminal regulators
(d) switching regulators
- 5555555555 66. A voltage regulator with a no-load output dc voltage of 12 V is connected to a load with a resistance of 10 Ω. If the load resistance decreases to 7.5 Ω, the load voltage will decrease to 10.9 V. The load current will be ________, and the percent load regulation is ________. (a) 1.45 A, 90.8% (b) 1.45 A, 10.09% (c) 1.2 A, 90.8% (d) 1.2 A, 10.09%