Need help in AM demodulation Circuit
Im a first year electrical student and i need help to construct a circuit to demodulate modulated AM signal. Please kindly helps if you have any idea about what simple circuit can i build (even the existing one) except the envelope detector that consist of 1diode 1resistor and 1capacitor.
Replies
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Jeffrey Arulraj
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qhy
can i noe where is the input audio in the circuit?sorry im really weak in circuit.ConquerorAM receiver circuit
Have a nice day Googling friend here is a simple circuit -
Jeffrey ArulrajHey friend the Variable capacitor is used as a tuner for the circuit that will automatically receive radio signal from air
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qhy
Hey thanks,i've tried to take out the capacitor and inductor and connect it to a modulated signal in multisim but the output waveform is actually a square wave which is not identical to the desired output of demodulation circuit.ConquerorHey friend the Variable capacitor is used as a tuner for the circuit that will automatically receive radio signal from air -
Jeffrey ArulrajHey friend the square wave is due to clipping of the square
Did you for sure use BC 549 in the place for your transistor Cause every transistor has its own operating Voltage -
qhyConquerorHey friend the square wave is due to clipping of the square
Did you for sure use BC 549 in the place for your transistor Cause every transistor has its own operating Voltage
Ya Im kinda sure -
Jeffrey ArulrajImage is not visible to Me friend Can you pls post it again
PS: Pls upload your ckt as a Jpg file using Upload file option near post reply button -
qhyMaybe because im still a newbie and i dont really have a upload file button but i've sent it to ur ymail mailbox.Thanks so much for the help
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Jeffrey ArulrajHey pls change the Frequency input of the circuit it is not 100Hz to 1kHz
This design is only for frequency 550kHz to 1100kHz
Set that and you will get your op as you need -
techlibHere is a simple AM demodulator circuit. The output can be directly connected to an amplifier.
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