What is the difference between amplifier and power amplifier?
Answers
Answer: An amplifier is an electronic device that boosts the level of the signal present at its input and provides the raised but identical signal at the output. Thus, it is a device that serves the purpose of amplification. The factor that determines the level of the amplification given by the amplifying unit is known as the gain of the amplifier.
The crucial difference between a voltage amplifier and a power amplifier is that a voltage amplifier increases the voltage level of the applied input signal.
Explanation:
Voltage Amplifier
A voltage amplifier is an amplifier that amplifies given voltage for a larger voltage output. It is characterized by a high input impedance and low output impedance. This is useful for reading and adapting small signals such as boosting an audio signal before sending it on its way to speakers.
The voltage amplifier is a form of the common emitter amplifier which relies on the transistor, the amplification of voltage is dependent on the ratio of resistors on the collector and emitter of this transistor.
Power Amplifier
Power amplifier as the name suggests is an amplifier that makes a given input current higher. It is characterized by a low input impedance and high output impedance. It is usually used in the last output stages of a circuit. Examples include: audio power amplifiers, servo motor controllers, push-pull amplifiers and RF power amplifiers.
Answer:
amplifier reset device that can increase the radiation of the signal it is a audio amplifier like wavelength