A receiver and an amplifier are devices used to enhance the power of the transmitted signal. The difference between them is that the receiver is used as a regenerator of the signal which also eliminates the signal noise. What can be observed in a cheap model, for example, in the best stereo receiver. On the other hand, the amplifier simply enhances the amplitude of the signal waveform and does not care about the noise that is amplified with the signal.
Definition of the amplifier
An amplifier is a device that increases the power of a signal. It may be equipped in an electrical circuit or may be a separate apparatus. The amplifier simply boosts the voltage, signal or power independently of the attenuation of the signal. It is possible that after the amplification of the signal, there is noise added in the signal by the amplifier.
These amplifiers can be classified into two categories, power amplifiers or weak signal amplifiers. The weak signal amplifiers can be used in wireless devices and disk drives, etc. where small input signals need to be amplified. Power amplifiers are used when it is necessary to amplify high input signals such as wireless transmitters, broadcast transmitters and Hi-Fi audio equipment.
A receiver is device that reproduces the attenuated or weakened signal. Signals are also distorted as they pass through areas with high levels of electromagnetic interference. In this sense, the noise related to the signal is not amplified and the regenerated signal is transmitted further.
These devices have a signal receiver, an amplifier and a transmitter. Different types of receivers have different types of configurations relying on the transmission medium. If the medium are microwaves, the receiver may include antennas and waveguides. Also, it is improved by adding to the design processors, which treated the sound and gave it a surround sound. More complicated models have multichannel audio stream processing.
Difference between amplifier and receiver
- Often an amplifier unit is already installed in the receiver
- The amplifier is used to amplify a signal, while the receiver is used to reproduce a signal sent to a transmitter.
- Sometimes amplifiers introduce noise into the signal when the receivers are still designed to eliminate noise.
The amplifier is a choice for those who will not adjust additional options for the audio stream, to deepen the subtleties of the sound. The receiver also allows the user to individually adjust the parameters and control the signal, modify and obtain a different end result.
Also, it should be noted that there is a significant difference in the cost of the equipment. Limited budget – amplifier, unlimited financial capabilities – the receiver. In addition, the first one works only with sound signal, while the second can playback of a video stream. In addition, the receiver has minimal additional equipment in the form of a radio tuner and, at most, a fairly rich set.