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Make very simple amplifire

Make very simple amplifire




Use Resistor - 4.7K ohms
 - 22K ohms
Use capacitor - 47uF
 - 100uF
Transistor -BC547
 - 2N3055
35W

An amplifier is an electronic device that increases the voltage, current, or power of a signal. Amplifiers are used in wireless communications and broadcasting, and in audio equipment of all kinds. They can be categorized as either weak-signal amplifiers or power amplifiers.

The power amplifier works on the basic principle of converting the DC power drawn from the power supply into an AC voltage signal delivered to the load. Although the amplification is high the efficiency of the conversion from the DC power supply input to the AC voltage signal output is usually poor.

Amplifiers are usually designed to function well in a specific application, for example: radio and television transmitters and receivers, high-fidelity ("hi-fi") stereo equipment, microcomputers and other digital equipment, and guitar and other instrument amplifiers.
Amplifier is a device. Amplifier is used to amplify the weak signal without changing any information means strengthen or boost the weak signal without changing any input or information. Negative feedback is used in amplifiers. Because of decreasing the gain of the amplifier.

Transistor Amplifier

A transistor acts as an amplifier by raising the strength of a weak signal. The DC bias voltage applied to the emitter base junction, makes it remain in forward biased condition. ... Thus a small input voltage results in a large output voltage, which shows that the transistor works as an amplifier.
different types of amplifiers are also often described in system or block diagrams by name.
  • Amplifier.
  • Audio Frequency Amplifier.
  • Intermediate Frequency Amplifier.
  • R.F. Amplifier.
  • Ultrasonic Amplifier.
  • Operational Amplifier.


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