[time-nuts] 4 KV Power Supply Recommendations

[J. L. Trantham]

I have a 5061A That I am trying to bring on line and it pegs the Ion Pump I
meter reading.  Measuring the voltage at pin 3 of the +3500V power supply, I
get -0.275 VDC.  This is across a 10K resistor and suggests that CS tube
current is 27.5 uA.  The voltage from the power supply with the tube
connected is 2050 VDC and around 3100 VDC with the tube disconnected.

It is recommended to connect the tube to an external 3500 VDC supply capable
of 5 mA and let it run to see if the current will come down.  Having watched
the voltage on pin 3 during the day, it has come down to -0.269 VDC and the
voltage with the tube connected has gone up to around 2075 VDC.

Any thoughts on a source for an external HV power supply for this
application?

Any thoughts on whether to just let it sit for a week or two to see if it
'pumps down'?

Any thoughts on other things to try?

Thanks,

Joe