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

Re: Rebuilding a neon

Mike,

The rivets just hold the laminations together.  Your best bet would be to 
put the core in the sun on your roof, or somewhere where it gets really 
hot that isn't your kitchen oven (unless you're single without roommates 
:-))  Then you have to punch/pound the bar that the windings are on 
sideways.  When I took my Jefferson Electric neon apart, I didn't know 
what was going on, so I used a cold chisel and split one of the 
secondaries.  Bad Idea.  I had to rewind the thing, which was a fun 
exercize, but not worth repeating.  The shunts are the parts of the core 
that go between the primary winding and the secondary windings.
(See my modification to your drawing)

Chip

On Sun, 4 Aug 1996, Tesla List wrote:

> >From mhammer-at-midwest-dot-netSun Aug  4 13:25:47 1996
> Date: Sat, 3 Aug 1996 23:58:31 -0500 (CDT)
> From: Mike Hammer <mhammer-at-midwest-dot-net>
> To: tesla-at-pupman-dot-com
> Subject: Rebuilding a neon
> 
> 
> I have acquired 3 Jefferson Electric 12kv 60 ma neon transformers 
> free of charge. One unit works fine and is working well on my coil.
> I am trying to rebuild one of the dead units. I unpotted it ok and
> once the tar was off it came to life. However there is some arcing
> between the windings and core. So I have attempted to dismantle the
> core and remove the windings. There are 4 rivets in the corners and
> the windings are contained on a bar along one edge of the core.
> Excuse my attempt at ascii artwork.
> 
> 
> 
>       _____________________________________________
>      |      /                              \       |
>      |     | SEC           PRI         SEC  |      |
>      |    --\----- ------------------------/--     |
>      |     | SEC   |---|   PRI   |---| SEC   |     |
>      |     | SEC   |S  |   PRI   |S  | SEC   |     |
>      |     | SEC   |H  |   PRI   |H  | SEC   |     |
>      |     | SEC   |U  |   PRI   |U  | SEC   |     |
>      |     | SEC   |N  |   PRI   |N  | SEC   |     |
>      |     --------|T  | --------|T  |--------     |
>      |                                             |
>      |                                             |
>      |                                             |
>      |_____________________________________________|
> 
> 
> The bar containing the windings seems like it should slide
> out of the rest of the core.But it seems quite unmovable.
> Removing the rivets from the rest of the core didn't help.
> 
> Also where are the magnetic shunts in this transformer. I don't
> see anything that looks like a shunt plate.It just seems to be a 2 piece
> core.
> 
> I have rebuilt 2 Franceformer neons and they were a piece of cake.
> This puppy has me stumped.
> 
> 
>  
> Mike Hammer
> mhammer-at-midwest-dot-net
>