The principle of the AGC circuit in AM receiver by the amplifier gain increases when the DC feedback from the envelope detector decreases the amplifier gain increases when the ripple the envelope detector increases the amplifier gain increases if the modulation index is low the amplifier gain increases when the ripple the envelope detector decreases the amplifier gain increases when the DC feedback from the envelope detector increases None of these the amplifier gain increases if the modulation index is high
The principle of the AGC circuit in AM receiver by the amplifier gain increases when the DC feedback from the envelope detector decreases the amplifier gain increases when the ripple the envelope detector increases the amplifier gain increases if the modulation index is low the amplifier gain increases when the ripple the envelope detector decreases the amplifier gain increases when the DC feedback from the envelope detector increases None of these the amplifier gain increases if the modulation index is high
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