MOTM

Power supply's got some exposed mains voltage, generally speaking using 
alligator clips around anything with any exposed wires at *any* voltage 
is a bad idea, all you need to do is slip a little and things short out, 
stuff gets cooked, or *you* get cooked.  Not good.

I can speak from experence that even the 'low' voltages (+15, gnd, gnd, 
-15) on the boards is unpleasant.  I was testing out my Blacet TIme 
Machine conversion on a bare circuit board.  I had the circuit board for 
the time machine sitting on my leg, and I was wearing shorts.  I hooked 
it up, I turned on my power supply (which was mounted safely in my rack) 
and took a 30 volt DC differential in my leg through the spikes on the 
back of the circuit board where the MTA-156 power connector was.  It 
hurt.  Not fun.  Even low voltage can be unpleasant, and potentially 
dangerous.  I consider myself fairly safe, usually, and I thought I had 
my insulation panel (cardboard sheet...) underneat the circuit board 
when I fired it up, but I didn't.  It's the silliest mistake I've made 
working on my MOTM stuff.  Don't me like me!  =]

-Geoff

Jeff Laity wrote:

>I have built my first two modules, a 490 and 190. They sit here on a 
>table as I wonder if they work. I mentioned to Paul that I was going to 
>hook banana clips to my power supply to test them, since I hadn't 
>gotten my 960 power distribution kit yet. He said, "ACK! ACK!" Having 
>read lots of Bloom Country as a child, I am fluent in Bill the Cat and 
>understood this to mean, "don't do that."
>
>So now I sit, looking at the gleaming modules, trying to resist the 
>temptation to plug them in. Pretty, shiny modules. Just sitting 
>there...
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