An amplifier will amplify a signal. For example, the antenna in a radio will receive an extremely weak signal; before it can be converted to a sound, it must be amplified (made stronger), by a factor of several million.
Of course, since you can't produce energy out of nothing, an amplifier doesn't actually produce the energy for the strong version of the signal - it requires a power supply.
An amplifier will amplify a signal. For example, the antenna in a radio will receive an extremely weak signal; before it can be converted to a sound, it must be amplified (made stronger), by a factor of several million.
Of course, since you can't produce energy out of nothing, an amplifier doesn't actually produce the energy for the strong version of the signal - it requires a power supply.
An amplifier makes a copy of a signal. The copy is usually larger than the original signal.
The copy may have a greater voltage than the original, a greater current, or both.
The basic function of a transformer is to change voltage levels.
A: The small base current will control the collector current flow by adding a resistor this changes of current flow will be evident as a voltage amplifier.
GAIN is a function of load current but basically a small current in the base will make a big change of collector current therefore making a transistor a voltage amplifier as opposed to a current amplifier
The output power of an amplifier is greater than its input power, whereas the output power of a transformer is almost the same as its input power. In other words, an amplifier increases acts to increase power, whereas a transformer only increases voltage.
Darlington amplifier has more gain when compared to cascade amplifier .
You need an amplifier for any speakers if they are to function.
An amplifier is used to increase the strength of the signal.
A triode works as a basic amplifier by the use of radio waves. The radio waves produce a heat that is amplified.
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It essentially boosts the voltage across the amplifier, and through the circuit.
Here is qn excellent article that explains step by step: http://MasteringElectronicsDesign.com/how-to-derive-the-instrumentation-amplifier-transfer-function/
current gain
The basic function of a transformer is to change voltage levels.
A buffer amplifier can be used to transform high input impedence to low output impedence, or vice-versa.
You can look at the in and out connectors on the TV and the amplifier. You have choices that depend on the tv and amplifier, basic stereo, surround sound and tos-link. As you know in and out are connected and out and in are connected. Do not connect in and in to each other and do not connect out and out to each other.
the basic function of electricity is to develop energy.
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