ldanto Posted April 4, 2005 Report Share Posted April 4, 2005 HI all,I'm tryng to build an fr modulator for a freind. I can find schematics for video modulators, but not for audio. Is there any way around this using discrete componentsThanks, Ldanto ??? ??? ??? Quote Link to comment Share on other sites More sharing options...
Lou Posted April 6, 2005 Report Share Posted April 6, 2005 HiI suppose this modulator is intended to be used with a TV. In this case, all you have to do is to add the sound subcarrier signal (or more exactly, the sound intercarrier signal) to the video signal at the input of your video modulator. The sound subcarrier depends on your country: in Europe mainland it is 5.5MHz, in the US, it is 4.5MHz, etc. You can generate this signal using a small VCO modulated with the audio signal. Premphasis is needed and also depends on the TV standard.Cheers,Lou Quote Link to comment Share on other sites More sharing options...
audioguru Posted April 6, 2005 Report Share Posted April 6, 2005 Hi Ldanto,Welcome to our forum.Dazza has a TV transmitter project with a built-in sound modulator here:http://www.electronics-lab.com/forum/index.php?topic=2938.0 Quote Link to comment Share on other sites More sharing options...
login
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.