Engineering Calculating Output Voltage of an Amplifier with RC Coupling Network

AI Thread Summary
To calculate the output voltage of the amplifier with an RC coupling network, the impedances of the resistor and capacitor at the specified frequencies (10Hz, 100Hz, and 1kHz) need to be determined. The resistor has a fixed impedance of 1 kΩ, while the capacitor's impedance varies with frequency, calculated using the formula Zc = 1/(jωC). At each frequency, the total impedance can be used to find the voltage divider ratio, which will help in calculating the output voltage Vo. The assumption that the amplifier's input impedance is significantly larger than 1 kΩ simplifies the analysis, allowing for straightforward calculations. Understanding these concepts is crucial for accurately determining the output voltage in this scenario.
Duckshot
Messages
1
Reaction score
0
Hi I am struggling to answer this question:

The input coupling circuit of the amplifier shown in the figure consist of an RC network, with R = 1 kW and C = 5mF fed by a sinusoidal voltage source of r.m.s. amplitude of 200 mV. Assuming that the input impedance of the amplifier is, at all frequencies, so much larger than 1 kW that it can be neglected, calculate the output voltage Vo at 10Hz, 100Hz and 1kHz.

fig1.jpg



I would really appreciate any help, or if someone could point me in the right direction.

Thanks in advance
 
Physics news on Phys.org
Don't know if you're still working on this, I just saw it.

What are the impedances of the resistor and of the capacitor?
 
Back
Top