Common Base Configuration Circuit Diagram. The same bias constraints apply to the common base circuit but the application of the signals is different allowing the base to be earthed and hence common to both input and output circuits. Sometimes common base configuration is referred to as common base amplifier cb amplifier or cb configuration.
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In common base configuration the input variables are emitter current i e and base to emitter voltage v be. Figure 2 circuit diagram of the common emitter amplifier configuration. From the above circuit diagrams of npn and pnp transistors it can be seen that for both npn and pnp transistors the input is applied to the emitter and the output is taken from the collector.
Characteristics of common base cb configuration.
Set the values of capacitors c1 c2 and c3 to 1µf each. Common base cb common collector cc common emitter ce. Figure 2 circuit diagram of the common emitter amplifier configuration. In general with common base amplifier configurations the current gain ai is defined as iout iin or the formula ic ie.
