What does your amp do for your sound system?
It’s easy enough to purchase new/replacement stereo components and hook it all up for fantastic results.
But, have you thought about what makes all of it tick?
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Stereo amplifiers can be a critical element forbest audio performance.
What Is an Amplifier?
The purpose of an amplifier is to receive a small electrical signal and enlarge or amplify it.
Amplifier.Daniel Limpi / EyeEm
Although amplifiers appear to be big, mysterious boxes, the basic operating principles are relatively simple.
and creates an enlarged replica of the original smaller signal.
The power required to do this comes from the 110-volt wall receptacle.
Image provided by D&M Holdings
How Does an Amplifier Work?
Alternating current flows in both directions.
The amount of current allowed to flow is based on the size of the signal from the input source.
A large signal causes more current to flow, resulting in greater amplification of the smaller signal.
The frequency of the input signal also determines how quickly the transistor operates.
A 1,000 Hz tone from the input source causes the transistor to open and close 1,000 times per second.
This is how it achieves the amplifying action.
Although there are different types and designs of amplifiers, they all operate in this similar manner.
