26-08-2017, 12:47 PM
Single tuned amplifier
Single-tone amplifiers consist of a single tank circuit and the amplification frequency range is determined by it. By giving signal to your input terminal of several frequency ranges. The tank circuit in its collector delivers the high impedance at resonant frequency, so the amplified signal is fully available at the output terminal. And for input signals other than the resonant frequency, the tank circuit provides a lower impedance, therefore most of the signals are attenuated at the collector terminal.
Ri-Input resistance of the next step
R0-generator output resistance gmVb'e
Cc and CE are negligible small
The equivalent circuit is simplified
Single-tone amplifiers consist of a single tank circuit and the amplification frequency range is determined by it. By giving signal to your input terminal of several frequency ranges. The tank circuit in its collector delivers the high impedance at resonant frequency, so the amplified signal is fully available at the output terminal. And for input signals other than the resonant frequency, the tank circuit provides a lower impedance, therefore most of the signals are attenuated at the collector terminal.
Ri-Input resistance of the next step
R0-generator output resistance gmVb'e
Cc and CE are negligible small
The equivalent circuit is simplified