9- Emitter Resistance
Emitter Resistance Emitter Resistance connected to the emitter terminal of a transistor amplifier can be used to increases the amplifiers bias stabilisation The aim of an AC signal amplifier circuit is to stabilise the DC biased input voltage to the amplifier and thus only amplify the required AC signal. This stabilisation is achieved by the use of an Emitter Resistance which provides the required amount of automatic biasing needed for a common emitter amplifier. To explain this a little further, consider the following basic amplifier circuit below. Basic Common Emitter Amplifier Circuit The common emitter amplifier circuit shown uses a voltage divider network to bias the transistors base and the common emitter configuration is a very popular way of designing bipolar transistor amplifier circuits. An important feature of this circuit is that an appreciable amount of current flows into the base of the transistor. The voltage at the junction of the two bias...


















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