The main difference between signal repeaters and amplifiers

1) The effect is different
1. The amplifier simply amplifies the signal and suppresses noise and interference.
2. The repeater plays the role of signal forwarding, which is equivalent to the role of a microphone. It is not only for data forwarding, but advanced relays can also relay transmission for sessions and application services.
2) The principle is different
1. The amplifier is actually an analog Fourier transformer. The output of the amplifier is a DC voltage, which is proportional to the signal amplitude of a certain frequency (parameter input frequency) in the input signal.
Other frequency components in the input signal will not be able to contribute to the output voltage.
2. The purpose of the design of the repeater is to give the network signal a boost so that it can be transmitted farther.
Due to the influence of transmission line noise, digital or analog signals carrying information can only be transmitted over a limited distance.
3) Application occasions
1. An amplifier is a device that can amplify the voltage or power of an input signal. It is composed of a tube or transistor, a power transformer and other electrical components.
Amplifiers are used in various devices such as communications, broadcasting, radar, television, and automatic control.
2. Repeaters are widely used in computer network speed transmission and wireless Internet access equipment.