AM_OSCILLATOR_FOR_WIRELESS_MICROPHONES

Published:2009/6/23 2:05:00 Author:Jessie | From:SeekIC

This circuit will generate an AM-modulated signal in the AM broadcast band that can be picked up on a receiver.About 2V of audio input will produce about 30% modulation of the oscillator signal.An old AM broadcast oscillator coil or other two-winding coil with about a 10:1 turn ratio and about 50 to 150 μH inductance can be used for T1.



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