home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.electronics
- Path: sparky!uunet!haven.umd.edu!socrates!jimbo
- From: jimbo@socrates.umd.edu (Jim Bogard)
- Subject: How would you detect lack of a square wave?
- Message-ID: <1993Jan2.172332.21070@socrates.umd.edu>
- Organization: University of Maryland University College
- Date: Sat, 2 Jan 1993 17:23:32 GMT
- Lines: 17
-
- What's the best way to detect the presence/lack of a square wave?
- I'm trying to build a 'valid video present' indicator, and I have
- some chip I got from DIGI-KEY (number not handy) which strips
- horiz/vert sync and provides them seperately. Now I'm wrestling
- with the problem of getting a TTL out from the mess indicating
- what's going on. Anybody got any ideas? Or is there perhaps a
- chip which will do this for me and I'm being stupid?
-
- Thanks much.
-
- J-.
-
- --
- Jim Bogard (jimbo@socrates.umd.edu)
- "Implement now, tweak later."
- Tech at large / gigging daemon
-
-