In the full-wave power supply shown in
Figure P8.25:
n = 0.1
C = 80 µF RL = 1 kΩ
Vline = 170 cos(377t)V
The diodes are 1N914 switching diodes (but
used here
for AC-DC conversion), fabricated from
silicon, with the following rated performance: Pmax = 500 mW at T = 25◦ C
Vpk−rev = 30 V The derating factor is 3 mwah/◦C for 25◦ C
< t=”” ≤=”” 125◦c=”” and=”” 4=”” mw/◦c=”” for=”” 125◦c=””>< t=”” ≤=”” 175◦c.=””>
a. Determine the actual peak reverse
voltage across each diode.
b. Explain why these diodes are or are not
suitable for the specifications given.
