Apparatus and method for measuring a movable electric charge ind

Details Apparatus and method for measuring a movable electric charge ind Apparatus and method for measuring a movable electric charge ind

1995-05-31

2000-03-07

Ballato, Josie

Electricity: measuring and testing

Electrostatic field

324456, 324 725, 324755, G01R 2912

Patent

active

060345306

ABSTRACT:
A measuring apparatus has a capacitor incorporated in a handy measuring tool electrically connected to a voltage meter, and a sharp leading end of the capacitor is brought into contact with a lead of a large scale integrated circuit device for accumulating movable electric charge induced in the presence of a charged insulating package into the capacitor so that the amount of the accumulated movable electric charge is calculated from a potential difference produced between electrodes of the capacitor.

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H. Ootera et al., Analytical Method for Evaluating Surface Charge Distribution on a Dielectric from Capacitive Probe Measurement-Application to a Cone-Type Spacer in 500 kVADC GIS-IEEE Transactions on Power Delivery, vol. 3, No. 1, Jan. 1988.
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IEEE Trans. on Power Delivery, vol. 3, No. 1, Jan. 1988, New York, US, pp. 165-172, XP002027566, H. Ootera et al. "Analytic Method for evaluating surface charge distribution" p. 166, right hand col.

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