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Re: SPDT High Voltage Switch

Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>
An inexpensive way to do it is a surplus 120 VAC solenoid with a 1" long stroke. We make up HV relays using a simple lever type "length multiplier" to lengthen the stroke length up in the air by approx 4 inches. The HV electrodes are tungsten and snap together when the solenoid is energized. Makes a nice switch. We have used this with a longer lever arm up to 125 kV. Marlin P. Jones Surplus in FL has the solenoids in stock.
approx 4 inches above the solenoid which is protected with P.E. plate the contacts are positioned on a pair of type CE 2 inch dia. phenolic rod stock. A spring return on the solenoid insures the contacts will not "stick" at higher currents. A central arm is used for DPDT operation. 


Dr. Resonance



Original poster: "David Rieben" <drieben@xxxxxxxxxxxxxxx>

Hi John,

Check out ebay item number 7592439326 and see
if that will "fit the bill" for you.

David Rieben


----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Monday, February 27, 2006 5:20 PM
Subject: SPDT High Voltage Switch



Original poster: <alderhood@xxxxxxxxxxxxx>
I am looking for a failsafe switch that can switch a grid between the 25Kvac power supply and ground. We are talking about very small amperages .The switch will be functioning as a safety to protect maintenance people and not for control purposes. I need for it to have a coil preferably 24VAC that will cause the grid to shift to ground on de-energizing. It seemed to me that this was simple at first but I may have too many trees blocking my vision of the forrest. A little help please and contact me directly as well as on the list. 

Thank you,
John Alderman
alderhood@xxxxxxxxxxxxx