[sdiy] video buffer

[Batz Goodfortune]

Y-ellow All.
         I don't suppose anyone could point me at a video amp circuit that 
doesn't use anything exotic by any chance? I wouldn't ask but everything 
I've found so far uses some part or other that I either, haven't got, can't 
obtain, or isn't worth spending the bux on. I'm kinda hoping someone might 
have something stashed away that uses a couple of BC109s or something. :)

And no coils.

Actually I don't care what it uses as long as I've got a chance of 
scrounging it from what I've got.

It's just to buffer/distribute composite video. The video from my 
surveillance cameras isn't so important but I need to split the output of 
my video machine 3 ways with as best quality as I can get without building 
something that's going to turn into a major project. I'd prefer to use a 
bunch of op-amps but I don't think 741s would quite cut the cheese in this 
case. :)

Case in point. I've got a lot of op-amps but of course they're mainly for 
audio or voltage buffering type jobs. Not a whole lot particularly suited 
for composite video. I've got some of those now-obsolete differential 
current buffer ICs that NSC use to make? I don't need gain but I do need to 
be able to drive a line.

I had thought about slaughtering a sacrificial VTR but I'm not really sure 
what I'm looking at inside those things. Besides, I don't actually have one 
ready to be sent to the abattoir right now. Still fattening those up for 
Christmas.

This is of course one of those projects no-one wants to do so I don't want 
to actually think about it either. But I'd appreciate a heads-up on any 
circuits that anyone might have found.

Thanks in advance.

Be absolutely Icebox.

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