|
نبذة شخصية:
|
Except for ICs like supervisor and reset ICs, some other device like Programmable Logic Device, DC DC Power Chip, Linear and LOD Regulators, Amplifier and so on are needed for a electronics. Among all these, you may also need a great amplifier for sure.
What Is an Amplifier?
An electronic amplifier is a device that is used to increase the power, current, or voltage of a signal. Amplifiers are used in music equipment, electronic devices such as television and radio receivers, audio equipment, and computers to increase the amplitude of a signal.
How Does an Amplifier Work?
Amplifiers work by increasing a small input signal to deliver a larger output signal. Amps in audio equipment take tiny electrical signals that contain musical frequencies and amplitudes and increase their strength. When talking about power amps, this increases the power enough to drive speakers back and forth to generate air pressure variations, also called waves.
It does this by taking power from a power supply and increasing the output to match the (relatively low-power) input signal. This process invariably introduces some noise and distortion into the signal; and the process cannot be 100% efficient at increasing the gain without loss — amplifiers inherently will lose some energy in the form of heat. The ideal amplifier can be described as "a straight wire with gain," as the output would be identical to the input, just greater.
|