High voltage gauge

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Posts: 19
Joined: Mon Jan 15, 2024 8:56 pm
Real name: Jackson Czarniak

High voltage gauge

Post by JacksonCzarniak09 »


Has anyone used this type of gauge before/has any information on one similar? Thanks

https://www.ebay.com/itm/162136923463?c ... efdaf3409e
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Richard Hull
Posts: 15021
Joined: Fri Jun 15, 2001 9:44 am
Real name: Richard Hull

Re: High voltage gauge

Post by Richard Hull »

Never buy such a meter!
This meter will require electronics to read this voltage. The meter is valueless to anyone in the world of amateur fusion.

It says it is a 5ma movement. If you tried to pull 5 ma through a dropping resistor the resistor wattage would have to be 500 watts!!!
No, this is read by a dropping train resistor pulling 50ua or less requiring a dropping resistor of only 5 watts. Then, the 50ua current would go into a op amp that is scaled to give 5ma output to the meter at 100kv on the input to the 50ua resistor string. Far too complex for the neophyte asking questions like you.

Richard Hull
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
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