Electronics > Beginners

Detect ~2kV

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SeanB:
Don't worry, you will feel it.......

metrologist:
I remember peeing on electric fence when I was a kid - no drama. I opened this unit and saw a simple transformer and a small HV ceramic cap. I made a small arc gap between the terminals and plugged it in, and got a good burst of sparks. I wonder how long this can take a short circuit?

Zero999:
My four year old nephew got a horrible burn on his chest from an electric fence.

An ordinary multimeter can measure up to 1000V, just add a 1kV rated 10M in series with it or perhaps 10 × 1M resistors if you can't get one rated to 1kV. The trouble is it's pulsed, so that might not work, as the meter might not respond fast enough. Perhaps a 2kV bridge rectifier and 100nF capacitor before the 10M resistor could be used to get a smooth DC voltage.

james_s:

--- Quote from: metrologist on September 08, 2018, 02:07:20 pm ---I remember peeing on electric fence when I was a kid - no drama. I opened this unit and saw a simple transformer and a small HV ceramic cap. I made a small arc gap between the terminals and plugged it in, and got a good burst of sparks. I wonder how long this can take a short circuit?

--- End quote ---

Gyro:

--- Quote from: Hero999 on September 08, 2018, 05:07:34 pm ---My four year old nephew got a horrible burn on his chest from an electric fence.

An ordinary multimeter can measure up to 1000V, just add a 1kV rated 10M in series with it or perhaps 10 × 1M resistors if you can't get one rated to 1kV. The trouble is it's pulsed, so that might not work, as the meter might not respond fast enough. Perhaps a 2kV bridge rectifier and 100nF capacitor before the 10M resistor could be used to get a smooth DC voltage.

--- End quote ---

I think you'd want a bit more protection for your multimeter than that - I'd go for a high voltage x10 divide (90M).

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