Simple Am Radio Circuit Diagram
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Description here is the circuit diagram of a simple am transmitter circuit that can transmit your audio to your backyard.
Simple am radio circuit diagram. As can be seen in the given circuit diagram the design is as simple as it can be just a couple of general purpose transistors and a few other passive components for configuring what looks like a nice little am radio receiver unit. Assembly is simple and doesn t require any soldering. It is similar in principle to the zn414 radio ic which is now replaced by the mk484.
The aerial tuned circuit feeds diode d1 which functions as the detector. Simple am radio receiver this circuit is essentially an amplified crystal set. Radio stations broadcast on medium wave bands and send signals into the air all around us.
The antenna coil collects the mw signals present in the air. Only a few simple parts are needed to pick up am radio waves. The 80 turns coil and 365pf variable capacitor form a tank circuit which receives the signal through the antenna and then the signal is detected by oa91 diode and amplified by bc547 transistor.
This circuit is designed with limited power output to match the fcc regulations and still produces enough amplitude modulation of voice in the medium wave band to satisfy your personal needs. The circuit functioning is pretty basic. You will love this.
You can also experiment with any am radio coil you have in scrap. The circuit use a compact three transistor regenerative receiver with fixed feedback. Simple am receiver circuit diagram the schematic shown below is a simple am receiver circuit uses only one transistor and some other components.
The inductor could be a standard am radio ferrite rod antenna while the tuning capacitor is a variable plastic dielectric gang intended for small am radios. Am radio this is the circuit diagram of the am radio. The antenna coil is 40 turns of thin plastic covered hookup wire in a spiral construction used in radios of old.
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