whats a public address system?

i want to know about the operational amplifier used in the public address system? and the Amplifier circuit diagram

Comments

  • When people refer to "amplifiers," they're usually talking about stereo components or musical equipment. But this is only a small representation of the spectrum of audio amplifiers. There are actually amplifiers all around us. You'll find them in televisions, computers, portable CD players and most other devices that use a speaker to produce sound.

    In this article, we'll see what amplifiers do and how they do it. Amplifiers can be very complex devices, with hundreds of tiny pieces, but the basic concept behind them is pretty simple. You can get get a clear picture of how an amplifier works by examining the most basic components.

    You can continue reading the article by accessing the link below.

  • Sherasi has a good answer and a very good source for discussion of many technical areas in simple layman's terms; often with illustrations and diagrams. I'd add that a "public address system" consists of a microphone, amplifier and speakers suitable for addressing the public. At an airport for example arrivals and departures could be announced over a public address system. Usually, the fidelity is not as good as the system in a concert hall but must be powerful enough to reach the intended audience. PA systems are even used outdoors at football stadiums, etc.

  • in the days of King Solomon, speaking venues have been built in the type of style that the persons in the rear of the section ought to hearken to very almost to boot as those in the front. The coliseums have been built so as that sound traveled extra suited. we've a similar arc built in a lodge here in cellular, Al, the conflict living house lodge. One guy or woman can stand on the top of an arc and whisper, and a guy or woman on the different end, some 30 ft away, can hear each be conscious. back in the days of Solomon, human beings ate extra healthy and as a consequence, their listening to replaced right into a lot extra suited. The spoken be conscious replaced into additionally revealed, usually by way of 2 or 3 scribes, who might examine notes after the speech to get the main finished version. Then the messages may be copied and dispatched to distinctive cities and communities. God Bless.

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