Portable HV supply - HV return connection

Thread Starter

johnsy

Joined Jul 3, 2014
28

Thread Starter

johnsy

Joined Jul 3, 2014
28
Hi Dodgydave,

Thank you for the link!

the return path for the arc is back to the transformer secondary, which may be isolated if you want.
I'm gonna try that.

I found a schematic of a usb plasma globe:

 

alfacliff

Joined Dec 13, 2013
2,458
actually the return for plasma globes sometimes dosnt exist as a wired connection, the rf generated will be capacitivly coupled through the glass and the body touching the glass acts like a capacitive load. did you ever see a plasma globe you had to hold on to a ground return wire to work? they do work better if you are grounded, but still work ungrounded.
 

Thread Starter

johnsy

Joined Jul 3, 2014
28
actually the return for plasma globes sometimes dosnt exist as a wired connection

You might be right on the portable/usb globes.

On the globes i've tested there was no hv return on the transformer secondary.
 
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