[填空题]
A silicon diode passes significant current only if the fovo g7lihe/b: q -g/(ivrward-:(e xod;w v9hcbias voltage exceeds about 0.6 V. Make a rough estimate of the average current in thx: 9wh( cve;doe output resistor $ R $ of
(a) a half-wave rectifier (Fig. Below a),$I _{av}$ = mA
(b) a full-wave rectifier (Fig. Below b) without a capacitor. Assume that $ R = 150\ \Omega $ in each case and that the ac voltage is 12.0 V rms in each case. $I _{av}$ = mA
a
b