What is amplifier and its type?
What is amplifier and its type?
An amplifier is an electronic device that increases the voltage, current, or power of a signal. Amplifiers are used in wireless communications and broadcasting, and in audio equipment of all kinds. They can be categorized as either weak-signal amplifiers or power amplifiers.
What is the name of amplifier circuit?
An Amplifier or an operational amplifier (op-amp) circuit is commonly used in the automation, control and other electronic circuits for marine applications. The applied input signal is usually a voltage or a current signal. The purpose of an amplifier is to produce an output signal larger than that of the input signal.
How are amplifiers classified?
Amplifiers are classified as voltage or power amplifiers. In other words, a voltage amplifier amplifies the voltage of the input signal. A power amplifier is an amplifier in which the output signal power is greater than the input signal power. In other words, a power amplifier amplifies the power of the input signal.
What is the type of amplifier configuration?
Three amplifier configurations are the common-emitter, the common-base, and the common-collector. The common-emitter (CE) configuration has the emitter as the common terminal, or ground, to an ac signal. CE amplifiers exhibit high voltage gain and high current gain.
What is power amplifier circuit?
A power amplifier circuit is used to drive the loads like speakers with minimum output impedance. In this mode the output is an inverted amplified signal which is at low power. Two Darlington power transistors are arranged in a class AB configuration to amplify the power level of this signal.
What is current amplifier?
A Current amplifier is an electronic circuit that increases the magnitude of current of an input signal by a fixed multiple, and feeds it to the succeeding circuit/device. Ideally, during this process of current amplification, the current amplifier will keep the voltage component of the input signal unchanged.
What are amplifier circuits used for?
