Have you done a simple Google searchfor "am demodulator"? There is a lot of information available, **broken link removed** for example. Note that there are several types of demodulators discussed on successive pages.
Also, search for "synchronous AM demodulator ".
Conventional envolope detection by germanium diode like europian OA79,etc or japanese 1N34A and a post detection filter is OK but as our member has to do a project, he may perhaps aim something else. Ofcourse, he could also go for a transistor active detector.
Sorry Nigel I have to ask, was that birth or puberty
To keep with the thread, keep it simple if a basic detector is needed and that comes back to the good old germanium diode. Works better than a coherer
Les
To keep with the thread, keep it simple if a basic detector is needed and that comes back to the good old germanium diode. Works better than a coherer
Les