31-01-2021, 11:31 AM
A couple of photos.
The first one is a RGB to PAL coder I prototyped in 1987. It was actually the first design I did for a client when I went self-employed. I powered it a year or 2 ago, for the first time in 20+ years, and it all worked apart from a failed CMOS chip which I replaced. The underside is largely wired with thin tinned copper wire. Sleeved as required. It looks pretty horrible but wasn't easy to access for a photo.
The other is my Test Card C generator which lives in my lab's rack bay. Probably built in the 1990s on colander ground plane board though that wasn't really needed. I probably just had some to hand. I think the underside is wired mainly with fine enamelled wire which comes on small reels to use with a dispenser pen. (Roadrunner?). I didn't use the associated combs to hold the wiring. I think it's loosely based on Dave Grant's design but modified to use different EPROMs and arranged to lock to my lab sync pulses. It's run without failure. Of course it will smoke next time I turn it on.
The first one is a RGB to PAL coder I prototyped in 1987. It was actually the first design I did for a client when I went self-employed. I powered it a year or 2 ago, for the first time in 20+ years, and it all worked apart from a failed CMOS chip which I replaced. The underside is largely wired with thin tinned copper wire. Sleeved as required. It looks pretty horrible but wasn't easy to access for a photo.
The other is my Test Card C generator which lives in my lab's rack bay. Probably built in the 1990s on colander ground plane board though that wasn't really needed. I probably just had some to hand. I think the underside is wired mainly with fine enamelled wire which comes on small reels to use with a dispenser pen. (Roadrunner?). I didn't use the associated combs to hold the wiring. I think it's loosely based on Dave Grant's design but modified to use different EPROMs and arranged to lock to my lab sync pulses. It's run without failure. Of course it will smoke next time I turn it on.
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
