96. What are the typical values of Vref and Iadj for the LM317 adjustable voltage regulator?
(a) 1.0 V, 100 mA
(b) 1.5 V, 100 mA
(c) 1.25 V, 100 μA
(d) 1.25 V, 10 mA
97. The 7905 regulator IC provides ________.
(a) 5 V
(b) –5 V
(c) 12 V
(d) –12 V
98. What is the purpose of an additional RC filter section in a power supply circuit?
(a) Increase the dc voltage component
(b) Increase the ac voltage component
(c) Decrease the ac voltage component
(d) None of the above
99. Calculate the dc voltage across a 2 kΩ load for an RC filter section (R = 50 Ω , C = 20 μF). The dc voltage across the initial filter capacitor is Vdc = 50 V.
(a) 40.78 V
(b) 42.78 V
(c) 45.78 V
(d) 48.78 V
100. Nota
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