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From: "Ken Taylor"
Subject: Re: DVD to TV: Need a Schematic Drawing of a DVD RF Modulator. (a.k.a. S-Video & Audio to Coax Converter)
X-Newsreader: Microsoft Outlook Express 6.00.2800.1106
Date: Sun, 8 Dec 2002 15:47:28 +1300
NNTP-Posting-Date: Sun, 08 Dec 2002 15:45:52 NZDT
"Ty" <firstname.lastname@example.org> wrote in message
> Subject restated:
> In regards to a DVD RF Modulator. Also some times referred to as an S-
> Video and Audio to Coaxial Converter.
> What I need:
> A Schematic Drawing for the device described below.
> Device Description:
> This device converts the signal coming from the RCA outs on the back of a
> DVD player to the Coaxial input on the back of a TV. More specifically:
> DVD outs; One Left Audio RCA out, One Right Audio RCA out, and One Video
> RCA out. The TV for this experiment of course only has one Coaxial input.
> The objective if your kind and generous enough to accept it:
> To provide a schematic drawing of the device described above. Either by
> uploading a picture of the schematic to this news group or by providing
> URL of a page that definitely has this specific schematic drawing. NOTE:
> Please do not provide links to schematic archives that "might" have the
> schematic. I've been searching archives and search engines for a while
> as you all probably know its a tedious task. This is partly why I'm
> just asking here in the news groups if by chance some one already has the
> schematic or knows where exactly where to find it online.
> In reply to people who say I should just buy the device and forget about
> learning anything:
> I haven't decided weather or not to build this project as of yet. It
> doesn't matter to me how expensive it is to build or how big the device
> might end up being on account of component size. I'm doing this because I
> enjoy learning how things work, I like reading schematic drawings, I'm
> learning electronics on my own at my own pace and in my own way, I'm
> not asking for much, and I just simply want a schematic drawing of this
> device. Its really strange how so many people are against me doing this
> and I can't understand why some one who's simply looking for information
> learn from can cause such panic stricken oppressive ("oh don't do that")
> kinds of responses. Please, just provide the schematic in some way or
> another. If you can't provide the schematic then please disregard this
> request and leave me alone in peace. Besides all of that, its less
> expensive to first look online to try and find a schematic than it is to
> purchase the device and spend all my free time and resources reverse
> engineering it myself. Why should I do that when there's a very real
> chance that I could find a schematic online for free in a shorter amount
> time? The previous question is rhetorical in nature in order to help make
> clear an understanding of my position in this matter. In other words
> responses to that question are an unnecessary waste of your time and
> effort. Thank you so much in advance for any help you may have to offer
> my search for this particular schematic drawing. Sincerely, -Ty.
http://www.epanorama.net/links/videocircuits.html has links to what you
need. Mix and match to suit. The diatribe was unnecessary - I was tempted to
not help, but I was looking at this stuff just recently anyway. The search
terms for this were rpetty basic, so maybe you should look at your engine's
help page. Have fun, the result will be crap but it's intersting. Get a copy
of the ARRL Radio Amateurs' handbook (or RSGB equivalent). They have lots of
stuff about this sort of thing.
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