The system of increasing the strength or level of weak signal in a circuit without any changes into its waveform is called faithful amplification.
The principles of transistor reveals that it will work correctly if its emitter-base junction (i.e input circuit) connected in forward biased and the collector-base junction(i.e output circuit ) connected in reverse biased at the all times.To achieving faithful amplification , this is main key factor. To achieve this ,the followings general conditions must be satisfied:
The principles of transistor reveals that it will work correctly if its emitter-base junction (i.e input circuit) connected in forward biased and the collector-base junction(i.e output circuit ) connected in reverse biased at the all times.To achieving faithful amplification , this is main key factor. To achieve this ,the followings general conditions must be satisfied:
- Proper amount of zero signal collector current
- Minimum amount of proper base-emitter voltage at any times
- Minimum amount of proper collector-base voltage at any times
The first and second conditions shows that base-emitter junction shall connected correctly in forward biased in the circuit at the all times and the third condition shows that base-collector shall connected correctly in reverse biased in the circuit at the all times.
To fulfil of these condition transistor work between saturation to cutoff region i.e active region.
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