Re: IIgs RGB to YPbPr Component experiment

["Michael J. Mahon" <mjmahon@aol.com>]

David Wilson wrote:
> roughana wrote:
>
> > I went searching for RGB to Component adapters and this popped up:
> > http://www.siliconchip.com.au/cms/A_102648/article.html
> > the full article requires payment to view... but could save
> > re-inventing the wheel.

Great idea if you can find a well-done design, or are willing
to play with it to improve a so-so design.

> This was discussed in the Topfield TF5000PVRt forum and did not rate
> highly (the circuit as published had at least one error). One forum
> member has even designed and built an RGB to component adapter and is
> taking orders for a small production run.
>
> http://www.topfield-australia.com.au/phpbb2/viewtopic.php?t=5411&highlight=rgb+adapter

This *type* of design is, however, correct, and is what I have
advocated that people try when connecting a modern TV monitor.

There are clearly better and worse electrical designs, and attention
to good 75 Ohm termination for both inputs and outputs, decoupling
proper matrixing (precision resistors), and efficiency (+5v single
supply rail-to-rail video opamps) are things I'd look for in a good
design.

-michael

Parallel computing for 8-bit Apple II's!
Home page:  http://members.aol.com/MJMahon/

"The wastebasket is our most important design
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