Hi Darius,
Quote:
|
Originally Posted by oldeurope
Hi Kat, answering your PM...
Hope it is helpfull for you.
|
Thanks very much; I'll rebuild things (again...)
For what it's worth, here's the present state of evolution of the mess I've been working on myself; it started off just suming with resistors, then the followers appeared, then the common load resistor turned into a current source, then I cobbled together a mess of DC restoration and sync circuitry. Then gave up after seeing what came out of it and started thinking about video opamps...
http://www.technogoths.demon.co.uk/temp/RGB-conv.png
It sort-of works; the sum of RGB is spot-on, the syncs are reasonable, but the black level wanders about a bit...
I'll freely admit I'm not too good with these new-fangled 3-legged sandy fuses
I'm a lot more at home with microprocessors and other digital stuff, programming and audio as long as I can use either valves or opamps...
I guess I ought to stick to what I'm good at, and avoid video circuitry...?
Regards, Kat