[comp.sys.amiga.tech] RGB->Composite converters

tim@mcrware.UUCP (Tim Harris) (12/08/89)

	Has anyone out there ever tried to build an RGB->composite converter
for an Amiga similar to the box that Commodore sells for the 500 for about
$70.00, I forget the number of the thing.  I have plans for a genlock 
someday but am trying to raise the cash.  I used a friends A2000 with a
composite out card on it to do some titling and found it to be acceptable
for a while but don't have easy access to the machine any more.  I figured
if Commodore sold the converter box for $70.00 it couldn't be too complex
and shouldn't cost too much to build one at home if you knew what you 
were doing.  Basically what is needed is a black box that connnects to the
RGB port and pumps out composite video on an RCA jack, it would be nice
if the RGB was passed through too.  If anyone has tried this please e-mail
any schematics or info you may have.
	Thanks in advance.


	Tim Harris (...!sun!mcrware!tim)

jn15+@andrew.cmu.edu (Jerome Lamont Napson) (12/09/89)

The name of the component you mentioned that can be used to hook up a
composite color monitor or television to an Amiga 500 is the Amiga 520. 
SPRITE TECHNOLOGY sells them for $40.00


					-if anyone cares
						Jerome

charles@hpcvca.CV.HP.COM (Charles Brown) (12/18/89)

>	Has anyone out there ever tried to build an RGB->composite converter
> for an Amiga similar to the box that Commodore sells for the 500 for about
> $70.00, I forget the number of the thing.
>	Tim Harris (...!sun!mcrware!tim)

The December 1989 issue of Radio-Electronics has a project to do this
on page 81.

I would like to find an RGB -> S-video converter and also a
S-video -> RGB converter.
(I don't know how hard it would be to modify the R-E project to put
out S-video.)
So far I have heard about one which is only available in Japan and
another which is very expensive.
--
	Charles Brown	charles@cv.hp.com or charles%hpcvca@hplabs.hp.com
			or hplabs!hpcvca!charles or "Hey you!"
	Not representing my employer.

dcr3567@ultb.isc.rit.edu (D.C. Richardson) (12/21/89)

    'llo All, just getting used to the 'net...

Here's my problem: (don't we all...)
   I have a 2000, 3 megs ram, etc... the works.

I haven't upgraded to the new Agnes yet, but will soon (3 months or so).
My vintage 1080 is slowly fizzing out. It's almost 4 years old now, and
the screen is beginning to bend at the bottom (not bad, livable) and the
picture shorts out every so often, to the point that I have to turn it
off (until the power light goes back on, and then out), and then back
on.  This can happen every 5 minutes or every 1/2 hour.. but it happens
a lot.  I've heard it needs  new flyback transformer.  How much is this
beast, and is it worth it?  I would really like to get a Nec 3D,
Princton UltraSync, and DiamondScan.  This is about $500, and I get a
new monitor, compatibility with the new chips (also A-Max, which I use
often) (the and above should have been >OR<, I'm not LOADED!)
   Opinions? Yes, I *AM* strapped for money (school), so I want to make
the best *LONG* term BUT econonical step.
   (my other option would be to Keep the color, use for Games/color
stuff and get a MultiSync GS (white) for Non-color things (which I do
more and more, I'm finding)  If I do this, is there a way to put the RGB
image on BOTH monitors at once?  I haven't found a way to do this
yet...)

                Thanks,
                     Daniel Richardson
                     Rochester Institute of Technology