A receiver is a device that receives and decodes electrical signals. Receivers are used in a variety of applications, including radios, televisions, and remote controls.
The main difference between an amplifier and a receiver is that an amplifier increases the strength of a signal, while a receiver decodes a signal. Amplifiers are typically used to boost the signal from a microphone or other audio source, while receivers are used to receive signals from radio and television transmitters.
Another difference between amplifiers and receivers is that amplifiers are typically standalone devices, while receivers are often integrated into other devices, such as radios or televisions. This is because amplifiers are only used to increase the strength of a signal, while receivers also need to decode the signal.
Finally, amplifiers are typically used in audio applications, while receivers are used in a wider variety of applications, including radio, television, and remote controls.