Voltage regulator with alternate voltage source...
wh.sudbrink at verizon.net
Sat Apr 9 22:07:21 CDT 2016
Brent Hilpert wrote:
> Well that's neat.
> I assembled the Cromemco kit version of the Cyclops
> (The kit version presented an interface for a computer
> rather than the scope drive of the magazine article.
I was recently able to acquire the S-100 interface cards
for the Cyclops. I'm hoping to take that step sometime
> Hopefully you're more successful with your unit.
> (I think you'll find the MC7805 there is indeed plastic
> not ceramic. Moto produced various power transistors
> and regulators in those packages (case 90 in Moto parlance)
> as well as a smaller version from the same plastic material)
I think you're right. It is odd, not plastic like any IC
I've ever seen. And it does have a purplish cast to it.
> A 9V wall wart would probably do for the power supply
I was worried about the "pseudo-DC" that most wall warts
> or remove the regulator
At this point, I'm about to build the "real" supply anyway...
Here are a few more recent photos:
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