Re: Zener protection for 10kV pulses

jwodin@xxxxxxxxx wrote...

okay, thanks. I'll try it. We're going to try to start pulsing
in a few weeks, so I'll let you know if I obliterate my lab
and all electronics therein

Jesse, you didn't explain how you're going to protect your
ENI 1.1MHz RF power amplifier! We use step-up transformers
for that function, BTW, resonating, if IIRC.

Winfield Hill wrote:
jwodin@xxxxxxxxx wrote...

I have the following circuit for one section of a single-atom
mass spectrometer.

I'd start with a simple beefing up the robustness of the path
from the rods to the DAC, as per the modification below.

. G
. _____|\_______________
. | |/ |
. Vac |
. | _|_
. Gnd C ---
. | ,---------,
. | | |
. _____ Rx R | 1_| 2_ |
. | DAC |--\/\/--+--\/\/--+-------|_| |_|---|--,
. |_____| | | |
. | R 3_ 4_ | |
. +--\/\/--+-------|_| |_|---+ |
. _|_ _|_ | |
. C --- C --- '------------'
. | |
. gnd gnd

This way a spark discharge to the rod sees multiple filters
on the way to the DAC. I'd make the resistors -\/\/- from
a proper HV part, or multiple ordinary resistors in series.
Finally, I'd add the zener you spoke of, just after Rx, going
toward the DAC, plus another resistor to the DAC. That should
do it. Next, start worrying about creaming your ENI amplifier.
Keep in mind Zener and TVS diodes have lots of capacitance.


--
Thanks,
- Win



--
Thanks,
- Win
.

Relevant Pages

  • Re: Zener protection for 10kV pulses
    ... from the rods to the DAC, ... or multiple ordinary resistors in series. ... Keep in mind Zener and TVS diodes have lots of capacitance. ...
    (sci.electronics.design)
  • Re: Zener protection for 10kV pulses
    ... from the rods to the DAC, ... or multiple ordinary resistors in series. ... Keep in mind Zener and TVS diodes have lots of capacitance. ...
    (sci.electronics.design)
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