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From: "Michael Culley"
References: <email@example.com> <firstname.lastname@example.org> <email@example.com> <firstname.lastname@example.org>
Subject: Re: Easy question for experts.
Date: Fri, 20 Dec 2002 18:29:05 +1100
X-Newsreader: Microsoft Outlook Express 6.00.2720.3000
The HC4066 suggested in this thread by Joe and R Lewis seams to be a good
"Si Ballenger" wrote in message
> On Fri, 20 Dec 2002 06:31:55 +1100, "Michael Culley"
> >We considered transistors but didn't use them bacause we thought some
> >voltage must go into the video signal. Is this correct?
> In this case I have to sink ~1ma into the capture card video in.
> This is due to to it being a closed setup with everything powered
> from one power supply. With seperate power supplies this doesn't
> seem to be a problem (such as a stand alone video switcher). I've
> tried doing the switching on the ground side of the video
> connection, but got some video bleed through. I need to recheck
> this setup prior to abandoning it. May try some other things to
> lower the current to the capture card in the event all video
> sources get switched on at one time by accident.
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