[Amps] vacuum variable caps

[Han Higasa]

Hi Mike  

Once I have experienced a small arc between 
a shaft of a load VVC and its support hardware
in my 50MHz hb amp.

I have used a flange of its stator for a high-side 
(signal side) and a bellows/shaft side for ground.

The flange near the shaft had been connected
to the nearest chassi by 2-inch wide copper band
but the arc have occurred around the shaft; 
so I have added another grounding way; and 
achieved no arc with 10% more output power.

I prefer the shaft side to connect the ground,
and a stator to high-side to avoid any trouble
such as stray caps, mechanical strength, arc etc.

de Han JE1BMJ