[Prev][Next][Index][Thread]

Re: Here pig pig pig (wheels)

.
>
> I'm going to have to find some sort of wheeled platform for this thing 
>to sit on.  Either that or I'll put wheels on the pallet and call it 
>done!!

Try a 12" x 12" sheet of 3/4" plywood with 4, 2" caster wheels attached to
one side.  2" caster wheels are available in swivel and non swivel for about
$2.50 each at Lowe's lumber yard.  300 lb. transformer divided by 4 wheels
means each wheels has to hole up 75 lbs.  I used 1.5" casters on mine and it
works fine and didn't case me and arm and a leg. 


>
> I was thinking about how to power the darn thing...  I have a 240 v 28 
>amp variac and various limiting devices (including a welder).  But the 
>problem is that if I use the variac - what becomes of the neutral 
>connection on the pig?  I can't connect it to the neutral bus - since if 
>I did - then one 120 volt primary of the pig would always see a full 120 
>volts (from N to Hot).  Also - since I have only one HV output and the 
>other side is connected to the case - I'd really need to keep the case 
>grounded and connected to neutral.  The only solution I see is to use an 
>isolation transformer between the variac and the pig.  This should allow 
>me to tie the pig's N to system N/ground, and power the pig's 12v lugs 
>off the isolation transformer.
>
> It just so happens that I have a 20 amp 240v toroidal 1:1 isolation 
>transformer!
>
> Does anyone think I should break the pig's N-to-case link, tie the 
>pig's case to a good RF ground, and then tie the pig's N to the power 
>neutral?  I think that might be the best plan.
>
> Oh - I depotted our 37 amp line filter which the tesla coil killed.  It 
>is hard to tell but it looks like the RF arc'd from one hot wire, 
>through the potting tar, to the case.  That tar just barely became soft 
>at 350 degrees (in a toaster oven).  I would think that the heat time to 
>depot a large neon would be at least 12 hrs since this 4x3x1 inch filter 
>took over 2 hrs to melt and there wasn't any iron to heat either!
>
>More later.  Comments invited.
>
>-Bill
>
> 
>
>______________________________________________________
>Get Your Private, Free Email at http://www.hotmail-dot-com
>
>
>
>