Micro Power AM Broadcast Transmitter


Posted on Feb 6, 2014

In this circuit, a 74HC14 hex Schmitt trigger inverter is used as a square wave oscillator to drive a small signal transistor in a class C amplifier configuration. The oscillator frequency can be either fixed by a crystal or made adjustable (VFO) with a capacitor/resistor combination. A 100pF capacitor is used in place of the crystal for VFO operation


Micro Power AM Broadcast Transmitter
Click here to download the full size of the above Circuit.




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