2007-11-07 04:32:21 · 3 answers · asked by Joe B 1 in Consumer Electronics ➔ Other - Electronics
One or more transistors or operational amplifier or special purpose integrated amplifiers can amplify a very small voltage at their input and deliver a higher voltage, current or power at the output. Power output comes from the power supply of the circuit. The power at the input may be in micro- or milliwatt. But the output can be several tens of Watt. In a transformer the output power is derived from the input power and hence transformer is not an amplifier. As mentioned above output power of an amplifier is not derived from the input power. The input current is amplified in the amplifier and the amplified current comes from the power supply of the amplifier.
2007-11-07 07:38:07 · answer #1 · answered by eematters 4 · 0⤊ 0⤋
Well the sound waves come out of it and go to your ear and then to your brain and your brain processes it thus you hear the sound that is coming out of the amplifier...
Just Kidding....I really dont know.
2007-11-07 04:41:21 · answer #2 · answered by OBESE 2 2 · 0⤊ 0⤋
In simple terms, they use transistors (or vacuum tubes...).
A transistor can be used to amplify the input signal.
2007-11-07 05:41:22 · answer #3 · answered by TV guy 7 · 0⤊ 0⤋