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Need help in AM demodulation Circuit

Need help in AM demodulation Circuit

qhy

@qhy-EuW1Yo • Oct 26, 2024

Oct 26, 2024

1.7K

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.

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Jeffrey Arulraj

@jeffrey-xA7lUP • May 23, 2013

<a href="https://www.circuitstoday.com/am-receiver-circuit" target="_blank" rel="nofollow noopener noreferrer">AM receiver circuit</a>

Have a nice day Googling friend here is a simple circuit

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qhy

@qhy-EuW1Yo • May 23, 2013

Conqueror<a href="https://www.circuitstoday.com/am-receiver-circuit" target="_blank" rel="nofollow noopener noreferrer">AM receiver circuit</a>

Have a nice day Googling friend here is a simple circuit
can i noe where is the input audio in the circuit?sorry im really weak in circuit.

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Jeffrey Arulraj

@jeffrey-xA7lUP • May 23, 2013

Hey 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

@qhy-EuW1Yo • May 23, 2013

ConquerorHey friend the Variable capacitor is used as a tuner for the circuit that will automatically receive radio signal from air
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.

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Jeffrey Arulraj

@jeffrey-xA7lUP • May 23, 2013

Hey 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

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qhy

@qhy-EuW1Yo • May 23, 2013

ConquerorHey 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

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Jeffrey Arulraj

@jeffrey-xA7lUP • May 23, 2013

Image 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

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qhy

@qhy-EuW1Yo • May 23, 2013

Maybe 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 Arulraj

@jeffrey-xA7lUP • May 23, 2013

Hey 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

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techlib

@techlib-3GSjh4 • May 24, 2013

Here is a simple AM demodulator circuit. The output can be directly connected to an amplifier.
#-Link-Snipped-#

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