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Results tagged with demodulation
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user 41003
3
votes
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Effects of DC offset and loading at the input of an envelope detector (simple diode demodula...
Often a small DC bias can help improve detection efficiency. Something around 100mV for a germanium diode. Often the DC bias is shared with the transistor bias such as in this design.
A germanium d …
- 34.2k
3
votes
Accepted
Collpits FM Receiver
(Slope Demodulation). This is a result of the transistor rectifying the oscillations and altering the bias point of the circuit. …
- 34.2k
4
votes
Accepted
In this Foster Seeley discriminator, what is the purpose of capacitor C3?
It looks like this diagram was taken from this website that describes the operation:
Foster Seeley Discriminator
A more detailed description is here FM demodulation …
- 34.2k
4
votes
Accepted
How do diodes work in an AM band application?
The detector you show is called an Envelope Detector (Wikipedia).
You are missing a couple of important components: A resistor and a capacitor after the diode.
When the diode conducts it charges …
- 34.2k