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Tube/Valve type electrometer schematic

E

Electric dabbler

Jan 1, 1970
0
Hi,



I'm looking for a schematic for a simple electrometer for detecting
electrostatic fields.



I am particularly interested in playing around with static charge and static
dissipative effect of different air-ioniser designs. I am thinking a FET
based electrometer is probably very easily fried in this environment



I have some old electrometer tubes, still in their original packaging, how
hard would it be to construct a basic instrument, it doesn't need to be
calibrated but I would like to be able measure both positive and negatively
charged plates.



If electrometer tubes are also easily destroyed by excessive voltage - I'll
stop messing with them and use a FET or dedicated IC and try harder not to
blow it up!



Thanks in advance,



Philip
 
D

Dave

Jan 1, 1970
0
Google for 'Field Mill' - may give you some ideas

Dave
 
J

Jim Yanik

Jan 1, 1970
0
Hi,



I'm looking for a schematic for a simple electrometer for detecting
electrostatic fields.



I am particularly interested in playing around with static charge and
static dissipative effect of different air-ioniser designs. I am
thinking a FET based electrometer is probably very easily fried in
this environment



I have some old electrometer tubes, still in their original packaging,
how hard would it be to construct a basic instrument, it doesn't need
to be calibrated but I would like to be able measure both positive and
negatively charged plates.



If electrometer tubes are also easily destroyed by excessive voltage -
I'll stop messing with them and use a FET or dedicated IC and try
harder not to blow it up!



Thanks in advance,



Philip

Look for older Keithley electrometer manuals;600 series,IIRC.
 
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