[Amps] shielded HV connector

[John Lyles]

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