PHYS345 Electricity and Electronics

Answers for 11/11 Assignment

Answer for 12.4

The power gain is 49.3 dB.

The overall voltage gain is 43.2 dB.

Answer for S12.1

The capacitor should be 4.0 mF.

To get 5.0 V out with no load, an open-circuit gain of 44 dB would be required.

Notice, however, that the output impedance of the amplifier is 50 ohm. This suggests that a 50 ohm load may be added to the amplifier, such as a long coax cable properly terminated with 50 ohm; the open-circuit gain would then need to be doubled (50 dB) for 5.0 V to appear across the load.

Last updated Nov. 23, 1999.
Copyright George Watson, Univ. of Delaware, 1999.