How does receiver work

The decoder sorts out the different sound channels from the video signal, and then sends the information to amplifiers for each sound-channel output. These amplifiers are connected to the appropriate speaker or speakers.

Digital decoders and analog decoders handle the job differently. A Dolby Digital surround-sound decoder recognizes these different channels and sends them to the appropriate speakers. Analog surround sound is something else altogether. The different analog surround-sound channels are actually extracted from the two standard audio channels that make up any ordinary stereo signal. This is commonly called processing because the encoder essentially takes the rear and front channels and works them into the ordinary stereo channels, and a surround-sound decoder separates the four channels out again.

See How Surround Sound Works for more information. These receivers are often sold with all the speakers you need, as a complete home theater system. In the next section, we'll find out what the different formats are and see what they offer.

Eric Brasseur. It requires perfect memories, that are not disturbed afther n periods. That can only be done with digital memories or with delay lines.

It only requires simple components like a guitar string, a tuning fork or a condensator and a self. The inductor is a 24AWG Enameled copper wire consisting of 12 loops, each being 4mm in diameter.

Even after adjusting the potentiometer and variable capacitor in various positions, no sound is emitted from the eight-ohm speaker. Not sure whether this is a problem on my side or yours, but a lot of people seem to be complaining about the radio not working. Maybe we can exchange images of our finished projects and figure out what the problem is.

Thanks in advance. This circuit not works. I tried many times with same circuit connection. No signal catches. I think This is Fake circuit. Built this and does not work, the LM amp works fine, but the tuning coil with capacitor do not pick up RF. Something is wrong here, i built it on a perf board with short soldering distances and it does not pick up anything, even a programmable Arduino transmitter is not picked up while my boafeng pick up the transmitter without any issues.

Can someone please answer the question that has been posed many times, and help all of us that are eager to learn and understand? Where is the signal extraction occurring? This would work better as an AM receiver. There is no FM detection circuit. The bandpass filter is not required. Output did show modulated frequency but still with freq deviation rather than amplitude modulation. I am guessing probably this could be one reason for the failure. The centre pin is the emitter in present case which i am guessing probably explains many of the failures.

Totally agree. Pin outs of BF is different from the commonly available TO package transistors. The middle pin is emitter. Save my name, email, and website in this browser for the next time I comment. Sign in Join. Sign in. Privacy Policy. Sign up. Password recovery. Sunday, November 14, Forgot your password? Get help. Create an account.

Electronics For You. Chapter 5 FM Receivers from mkazree. Condensed Water Atomiser For Air-conditioners. You can use simple single strand copper wire or whip antenna for testing. Have u published any video of working of this project anywhere? Your transistor radio is receiver and may not possible to work as transmitter. Yes, you can receive the signal in this circuit provided you tune it to the same frequency.

I tried so many times. You can use any 22p variable capacitor in place of trimmer. Does the coil have to turn left, as indicated as L, or is that just labelling? You can use BF in place of BF They are easily available from various vendors. Can you please tell how and where in the circuit is demodulation done? What variable resistor and variable capacitor should I use for this project?

Hi, would like to construct MHz receiver, please suggest if this can be modified. What frequency demodulation method does this circuit follow? Can I transmit signals from an FM walkie-talkie to this receiver? Please enter your comment! Please enter your name here.