Home / Questions / The diode in the circuit shown in Figure P927 is fabricated from silicon and
The diode in the circuit shown in Figure P9.27 is fabricated from silicon and
iD = Io(evD/VT − 1) where at T = 300 K
kT
9.34 In the rectifier circuit shown in Figure P9.34,
v(t) = A sin(2π 100)t V. Assume a forward voltage drop of 0.7 V across the diode when it is conducting. If conduction must begin during each positive half-cycle at an angle no greater than 5◦, what is the minimum peak value A that the AC source must produce?
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Io = 250 × 10−12 A VT =
≈ 26 mV
vS = VS + vs = 4.2V + 110 cos(ωt) mV
ω = 377 rad/s R = 7 kQ
The DC operating point or quiescent point (Q point) and the AC small-signal equivalent resistance at this Q point are
IDQ = 0.548 mA VDQ = 0.365 V rd = 47.45 Q
Determine, using superposition, the AC voltage across the diode and the AC current through it.
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