Voltage Amplifier A voltage amplifier is an amplifier that amplifies given voltage for a larger voltage output. The voltage amplifier amplifies the voltage or increases the voltage level of a signal.
The transistor used in the voltage amplifier has a thin base because it does not handle large current. The transistor used in the power amplifier has a thick base because it handles the very large current. The output impedance of the power amplifier is very low, up to ohm, so that it can deliver a high current.
Voltage Amplifier. The power amplifier amplifies the power of a signal. Voltage amplifier amplifies the voltage or increases the voltage level of a signal.
The input signal of the power amplifier must have a high magnitude. The voltage amplifier can work with low magnitude signal. The current gain of the power amplifier is very high, it greater than The current gain of the voltage amplifier is very low, it lies between 5 to Transformer coupling is used in Power Amplifier.
RC coupling is used in Voltage amplifier. The transistor used in the Power Amplifier has a thick base because it handles the very large current. The transistor used in the voltage amplifier has a thin base because it not handle large current, it just increases the voltage level of the input signal.
The output impedance of the power amplifier is very low, up to ohm. The output impedance of the voltage amplifier is very high, about 12 kilo-ohm.
The collector current of the voltage amplifier is very low up to 1 mA but the collector current of the power amplifier is high greater than mA. The voltage amplifier is used for small signal voltage, but the power amplifier is used for comparatively high voltage signals. Save my name, email, and website in this browser for the next time I comment. Post comment. Skip to content. Facebook page opens in new window Twitter page opens in new window Instagram page opens in new window YouTube page opens in new window.
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