"Wayne Chirnside" wrote to "Mike Ross" (30 Oct 02  13:05:00)
 --- on the topic of "Re: BATTERY PACKS"

 MR> A rather heavy knife switch, I might add, like the kind you see in
 MR> Frankenstein movies. 

 WC> Got mine at Radio Shack long time ago.

Was that back when they still had only half a dozen stores?


 WC> Yu don't get an SCR that can handle THAT surge at Radio Shack but they
 WC> are available from DigiKey.

You're dealing with surges. So even a relatively low rated 6 ampere SCR
will pass a full score of 100's amperes without a sweat.


 WC> I'd agree about safety issues under
 WC> certain cercumstances, you're sweating and well grounded.
 WC> Much of those concerns could be eliminated by adding some capacitor
 WC> filtering after the rectifier thus removing the pulsed DC
 WC> component which is far more dangerous to causing heart fibrillation
 WC> than is DC.

Oh, boy! If you believe what you just wrote, you believe anything. No
insult intended. In the shock effects literature it can be found that
heart rhythm problems occur within a narrow current range of a few
milliamperes. Less than this range there is no effect, higher and flesh
burns result but the heart survives.


 WC> I once was redoing my phone line at the outside box, neighbor
 WC> had tapped into my line and reversed my line :-(
 WC> It was raining and while I was connecting the phone line properly
 WC> the damn thing rang... and jumped me quite a bit.

It's the surprise that gets you most. One time I nearly died laughing
when I handed my paw the secondary of a filament transformer while I
applied a "D" cell to the filament. He nearly jumped out of his shoes!

 Mike
 ****

... If at first you don't succeed, you need a bigger hammer!

--- Blue Wave/DOS v2.30