what is an amplifier and how it works | tamil video[HD]

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in this video i am going to show you what is an amplifier and how it works.in tamil
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In “Electronics”, small signal amplifiers are commonly used devices as they have the ability to amplify a relatively small input signal, for example from a Sensor such as a photo-device, into a much larger output signal to drive a relay, lamp or loudspeaker for examplewith tamil explanation.

There are many forms of electronic circuits classed as amplifiers, from Operational Amplifiers and in tamil. The classification of an amplifier depends upon the size of the signal, large or small, its physical configuration and how it p Small Signal Amplifiers up to Large Signal and Power Amplifiersrocesses the input signal, that is the relationship between input signal and current flowing in the load.
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