Analog Electronics with LabVIEW®

C.3. Amplifier Voltage Gain

Any transistor amplifier stage has a gain from the input terminal to its output terminal (base and collector, respectively, for this case). But the circuit gain, from the source to the output, takes into consideration the possible finite input resistance at the transistor input terminal. Due to the finite signal-source resistance, an attenuation results from the signal-source to the transistor input terminal. The example of this case of the common-emitter amplifier stage is considered here.

C.3.1. Gain from Base of Transistor to Output at Collector

The midband (frequency-independent) signal version of the circuit of Fig. C.1(b) is shown in Fig. C.4. It is obtained from the general circuit by converting dc voltages ...