Hi guys, I haven't been on here in a while. Figured I'd say hi.
Also, quick question about relays. Suggestions and opinions are appreciated.
I'm wanting to use a 120VAC relay rated at 10amps. However I plan to run about ten thousand volts through it but only a few milli amps. The relay wont switch while that voltage is present. It will switch then the high voltage will be turned on or off.
The relay should handle that right?
The relay should handle that right?
I would be very surprised if it did.
And is this an AC or DC voltage?
I believe it’s DC... it’s the high voltage side of an electric fly swatter
Then that makes it even worse. The contacts will arc at those sorts of voltages on a normal relay, that is you won’t be able to turn it off because the disconnect contacts will be too close together.
The contacts need to be much further apart and that will be reflected in the rating on the relay’s data sheet. Yes you can switch that but only with a relay designed for that voltage.
I wasn’t planning on turning on the low voltage supply to the swatter until after the relay has switched...
So it shouldn’t arc???
There will be No high voltage present while switching. And when the relay is open there is no high voltage present.
I’ll post a schematic tomorrow.
Since you can obviously control the high voltage source independently of the relay, and it will only be on when the relay contact is closed, why do you even need the relay????
Hi guys, sorry I'm late with the reply. I was gifted some surprise extra shifts at work. 
As promised a rough schematic is attached....
My project is for my chicken coop.
I'm wanting to use the fence as both a sensor and then a high voltage defense. That's why I'm using the relays as described.
Any suggestions are much appreciated.
LandonW:
Hi guys, I haven't been on here in a while. Figured I'd say hi.Also, quick question about relays. Suggestions and opinions are appreciated.
I'm wanting to use a 120VAC relay rated at 10amps. However I plan to run about ten thousand volts through it but only a few milli amps. The relay wont switch while that voltage is present. It will switch then the high voltage will be turned on or off.
The relay should handle that right?
Not in any way. 10kV volts is completely different beast to mains levels. You'll just get flashover and arcing, corona discharge, whatever. A 100V part is never going to handle 10kV.
I think what you need is a homebrew high voltage contactor operated by a servo. Use teflon or polythene for
insulators, keep spacing between conductors to an inch or more. Learn about clearance and creepage for high voltage.
MarkT:
I think what you need is a homebrew high voltage contactor operated by a servo. Use teflon or polythene for
insulators, keep spacing between conductors to an inch or more. Learn about clearance and creepage for high voltage.
I didn't think of that kind of switch....
that's a good idea. thank you.
