This used to be the EDN article search database. It came up, but I don't
know if it still is:
http://www.reed-electronics.com/ednm...=0&rme=0&cfd=1

--
Steve N, K,9;d, c. i My email has no u's.


"Jim, N2VX" wrote in message
...
On Mon, 19 Jan 2004 04:18:19 -0000, Pete Beals
wrote:

Yes most used AM stereo demodulators but those IC's might not be sold
anymore.

There must be reasonable implementations as many shortwave receivers have
sync detectors.

I just need one to demodulate AM.


Pete
I think that "as few parts as possible" and "works good" are probably
somewhat mutually exclusive. Have you done the usual google and
altavista searches on "synchronous detector"?

A long long time ago one appeared in the user-contributed circuits
section of Electronic Design magazine. Don't remember the name of the
column but it was always good. They also used to publish circuit
collections from the column every few years. Lots of clever ideas:
"Build this quadraphonic stereo receiver with a single CMOS interter"
is just a slight exaggeration. I remember reading the magazine up to
the early 90's. Don't know what happened to them.

The synchronous detector used two analog multiplier chips and as I
recall was contributed by someone with a callsign. Don't remember any
other details. Anybody remember the magazine and the column?

Thanks and 73,
Jim