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From: mzenier@polari.UUCP (Mark Zenier)
Newsgroups: sci.electronics
Subject: Re: Looking for Rgb to composite adapter
Message-ID: <4423@polari.UUCP>
Date: 12 Jun 91 04:33:05 GMT
References: <1991Jun9.235022.20505@cs.utk.edu>
Organization: Seattle Online Public Unix (206) 328-4944
Lines: 22

In article <1991Jun9.235022.20505@cs.utk.edu> gathings@cs.utk.edu (Golando Gathings) writes:
>
>	I am looking for a little ckt that will take the ttl
>levels of either a mono or color card of a pc compatible and convert
>it to a composite signal.  I have seen it done before , but I do 
>not have the refs with me at this time.  All replies are welcome.

1. Radio-Electronics  December 1989

2. Circuit Cellar Ink, Issue #1 and #2

3. Motorola Application note AN-932, "Application of the MC1377 color encoder"

The special delay lines and coil used to be listed as a seperate category
in the TOKO section of the Digi-Key catalog.  They may still carry them.

Remember that the horizontal line period has to be 63.555 microseconds
and the vertical period has to be 16.683 milliseconds for any NTSC
equipment to come close to accepting the output.  This rules out
mono and hercules cards.

Mark Zenier  markz@ssc.uucp  mzenier@polari.uucp