Explain stagger tuned amplifier with the help of waveforms.

Explain stagger tuned amplifier with the help of waveforms.
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1 Answer

Answer :

Circuit Diagram:

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Above figure shows two-stage tuned voltage amplifier. The stagger tuning in this circuit, may be achieved by resonating the tuned circuits L1C1 and L2C2 to slightly different frequencies.

Frequency Response:

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Above figure shows frequency response of a stagger-tuned amplifier. In this figure, curve ‘a’ shows the gain versus frequency of the L1C1 tuned circuit. Similarly the curve ‘b’ shows the response of the L2C2 tuned circuit. The curve ‘c’ indicates the combined response of the circuit. It is evident from this curve that the amplifier has a greater bandwidth and flatter pass-band. It has been found that more the number of stages used, flatter will be the passband and steeper will be the gain fall-off outside the pass-band. Because of the stagger tuning there is a loss of voltage gain.

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