Re: Bulletproof your WG6100!

Count me in for a few. Now if I can just find the Star Wars game for them.

John

Anders Knudsen wrote:

> At 12:44 PM 1/14/98 -0800, you wrote:
> >Alright Anders!
> >
> >Count me in for 5-10 depending on what your "quantity" price break is. :-)
>
> Tallied in.
>
> >On a related note... I'm still fascinated with the idea of trying to
> >upgrade a WG6100 to WG6400 performance specs. Soooo...
>
> Will get to this when I have the LV PCB sent to the fab.
>
> >National Semiconductor sells the LM317HVH. That's a "high voltage" version
> >of the 317 and as such can regulate from 1.2-57V. (enough to get into the
> >48V band the WG6400's looking for. ;-) Question for Anders: How much
> >current do the 317/337 on your replacement board need to source? (The
> >reason I ask is that the LM337HVH is a TO-93 and can only source a few
> >hundred mA.)
>
> I'd have to look at my notes at home for exact numbers, but with a quick
> back of the envelope calculation, I believe the source current is no more
> than 100 to 200 mA. Any more than that and I think the pass transistor will
> source a current high enough to blow the fuses. i.e., -- it is possible
> that my current PCB will work with the HV versions of the LM regulators.
> I'll take a closer look at it after I have finished the fab order.
>
> -Anders.
>
> -----------------------------------------
> | Anders Knudsen
> | ASIC Design Engineer
> | Adaptec, Inc., Boulder Technology Center
> | anders_knudsen@btc.adaptec.com
> | http://www.adaptec.com
> =========================================

--
John Butler
Mesa, AZ
Collector of Classic Arcade Games and Pinball Machines