Class B power amp

Thread Starter

lawie

Joined Sep 19, 2007
2
Hi, the question goes..
A complementary class B output stage is generating a triangular output signal across a 100O load resister with a peak value of 8V and frequency of 1Khz. The output stage is supplied from +/- 10V supplies. What is the efficiency of this amplifier?

eff = Pout/Pdc

Pout = (Vout rms)^2 / Rload = 0.32W

Pdc = IcVcc...
I assume that Ic sat = Iout pk = Vout/Rload = 80mA
How do I find the average current in order to find my Pdc?
 
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