>
>Anyone have a jpeg scan of an SB200 schematic or know of a web site
>containing the schematic ?
>
>I am installing a Harbach soft key board and am having some voltage problems
>with trying to rectify one side of the filament transformer to obtain 3v DC.
>
I would convert the sb200 from negative polarity RL control to positive.
Basically, this envolves getting rid of the inane biasing sheme and
converting to something like the sb-220 configuration, with high-speed
switching to fix the hot-switching problem. . Our soft-key parts kit
goes for 50 cents. It will switch 300v positive at 500mA in around 1 uS.
.
cheers, Eric
- Rich..., 805.386.3734, www.vcnet.com/measures.
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