Measuring low current on high voltages?

[ren_zokuken01]

so i have this electric device that can generate about hundreds of kV of electricity, but low currents. i'd say about tens of milliamperes??

i only need to measure the current. i was thinking of simply using my digital multimeter, so sure, my multimeter can take it coz it's rated to go up until 10A. the thing it's fuse is rated up to only 250V??

so, can i simply remove the fuse from the holder and simply short it? since i already know the current is only gonna be within tens of milliamps? if i do so, can i be sure that the high voltage won't damage my multimeter??

 

[ren_zokuken01]

how about a semiconductor device that can limit the flow of very high voltage to an upper limit value, but mostly let the current be the same? i guess it also needs to dissipate the heat from said excess voltage very well. does it exist?

 

[Hero999]

No never remove the fuse from the meter.

The meter's insulation is only 1kVDC, if you try to measure 100kV, an arc will jump through the case which will both damage it and you'll get a nasty shock.

 

[ren_zokuken01]

No never remove the fuse from the meter.

The meter's insulation is only 1kVDC, if you try to measure 100kV, an arc will jump through the case which will both damage it and you'll get a nasty shock.

thought so.....  T_T


what about my idea of a semiconductor device (somewhat like a diode)??

 

[Elex518]

Simplest way is to add 1 ohm high voltage resistor between the wire...measure the voltage drop across resistor....use the formula I = V/R to calculate the current.

Check here for more repair tips --> https://elex518.blogspot.com/