Design a 25 w class b public address amplifier with one, Ask an Expert

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Design a 25 W Class B public address amplifier with one input that will operate off of a pair of batteries of equal voltages and provide a voltage gain of 100. Assume that available op amps have againbandwidth product of 1 MHz and can come within .3V of the rail voltage. A 4-ohm speaker (load) will be used.

a) If the upper frequency limit of the amplifier is to be 20kHz, how many op amps will be needed to provide the necessary gainand bandwidth?

b) Draw your circuit showing component values and biasingincluding quiescent voltage values minimizing component count. Thefrequency response is to go down to DC.

c) What is the minimum value of the battery voltages that still meets the power requirement?

d) What input signal is required to drive the amplifier to full power?

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Electrical & Electronics, Engineering

Category:- Electrical & Electronics
Reference No.:- M9871808

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