An amplifier is a circuit that increases/decrease t
he input signal value and in this experiment
the signal to be amplified is the voltage. In this
experiment you are going to investigate
frequency response characteristic of a voltage ampl
ifier circuit using the N-channel JFET
device .
Most amplifiers have relatively constant gain over a certain range of frequencies. This range of frequencies is called the bandwidth of the amplifier. The bandwidth for a given amplifier depends on the circuit component values, the type of active components and the dc operating point of the active component. When an amplifier is operated within its bandwidth, the current gain Av voltage gain and power gain values are referred to as midband gain values. A simplified frequency-response curve that represents the relationship between amplifier gain and operating frequency
Please read my book (American University Laboratories for Electrical Engineering (part 3))
The first section in it covers your question.
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