Electrostatic Voltmeter operating assumption is agnate to that of an electrometer, it is, however, advised to admeasurement top abeyant differences; about from a few hundred to abounding bags volts.
Principle of operation
The electrostatic voltmeter is utilizing the allure force amid two answerable surfaces to actualize a angle of a arrow anon calibrated in volts. Since the allure force is the aforementioned behindhand of the polarity of the answerable surfaces (as continued as the allegation is opposite), the electrostatic voltmeter can admeasurement both absolute accepted and alternating current.
Typical architecture is apparent in the engraving. The pivoted area NN is admiring to the anchored area QQ. The affective area advertence the voltage by the arrow P and is counterbalanced by the baby weight w. In newer instruments the weight is replaced by a spring, appropriately acceptance the beat to be acclimated both in accumbent and vertical positions. This anatomy of architecture is apparent in the photograph of the mechanism. The anchored area is cloistral from the blow of the meter. The butterfly shaped affective sector, fabricated out of a attenuate aluminum foil, is pivoted below. Both the anchored and the affective sectors are awful able and after any aciculate corners to abbreviate top electrical accent areas. The movement of the area is damped by the air vane absorbed by a arced section of wire.
Principle of operation
The electrostatic voltmeter is utilizing the allure force amid two answerable surfaces to actualize a angle of a arrow anon calibrated in volts. Since the allure force is the aforementioned behindhand of the polarity of the answerable surfaces (as continued as the allegation is opposite), the electrostatic voltmeter can admeasurement both absolute accepted and alternating current.
Typical architecture is apparent in the engraving. The pivoted area NN is admiring to the anchored area QQ. The affective area advertence the voltage by the arrow P and is counterbalanced by the baby weight w. In newer instruments the weight is replaced by a spring, appropriately acceptance the beat to be acclimated both in accumbent and vertical positions. This anatomy of architecture is apparent in the photograph of the mechanism. The anchored area is cloistral from the blow of the meter. The butterfly shaped affective sector, fabricated out of a attenuate aluminum foil, is pivoted below. Both the anchored and the affective sectors are awful able and after any aciculate corners to abbreviate top electrical accent areas. The movement of the area is damped by the air vane absorbed by a arced section of wire.
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