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From: dsi@unccvax.UUCP (Dataspan Inc)
Newsgroups: net.analog
Subject: Re: Adding Video Input to a TV Receiver
Message-ID: <371@unccvax.unccvax.UUCP>
Date: Sun, 17-Nov-85 20:26:24 EST
Article-I.D.: unccvax.371
Posted: Sun Nov 17 20:26:24 1985
Date-Received: Wed, 20-Nov-85 07:53:35 EST
References: <6263@amdcad.UUCP> <2100004@uicsl> DON'T TRY THIS. Most, if not all TV receivers now currently made which do
Organization: UNC-Charlotte
Lines: 8

not have a video input provision use full wave bridge rectification of the
AC mains. Thus, the chassis is always 77 volts garbage-AC above the neutral 
in NTSC countries. In addition, most consumer sets require considerable
level shifting and garbage logic (many Zeniths, for example, have a separate
second detector for sound-sync and composite video...)

David Anthony
DataSpan, Inc