[Amps] shielded HV connector

[Steve Thompson]

For total safety I prefer SHV connectors. It's not possible to touch the 
centre pin on either half accidentally and they guarantee to make the 
ground first and break it last when mating. They use RG58 cable which is 
conveniently small and flexible and comfortably handles all realistic 
supply voltages.

Sure, they cost a bit more than the alternatives, but how much is your 
life worth?

Steve

> Some commercial high voltage power supplies use a modified PL259 type 
> connector. For the HV cable, they use the outer shroud of the male PL259, but 
> the RG8 cable center conductor sticks out about 3 inches, to give a long 
> creepage path in air. It has a banana plug at the end.  Then, inside the 
> chassis of the matching power supply, the PL259 jack is there, minus the 
> insulator and center pin. The aforementioned HV cable screws on, and the long 
> dongle of wire pokes into a mating banana receptacle, mounted on a circuit 
> board 3 inches inside of the power supply. I made it sound simple, actually 
> there is more to it than that, including a way to ensure that the banana pin 
> goes into the socket, then the PL259 threads are cinched on as the shield. 
> 
> I have seen this on units up to 20 kV, so it seems to be reliable and very 
> cheap. 
> 
> 73 and Happy New Year
> John 
> K5PRO