System and method for accumulating and measuring a slowly varying electrical charge

System and method for accumulating and measuring a slowly varying electrical charge

A system for measuring electrical charge, comprising a capacitance detector (110) connected to a charge integrator (120) being an operational amplifier with capacitance (Cf) feedback (130), wherein the input stage (121) of the charge integrator (120) comprises a pair of symmetrically connected compl...

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Hauptverfasser: Sosin Zbigniew, Sosin Maciej, Adamczyk Marek, Lasko Pawel
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Sprache:eng
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AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
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creator Sosin Zbigniew
Sosin Maciej
Adamczyk Marek
Lasko Pawel
description A system for measuring electrical charge, comprising a capacitance detector (110) connected to a charge integrator (120) being an operational amplifier with capacitance (Cf) feedback (130), wherein the input stage (121) of the charge integrator (120) comprises a pair of symmetrically connected complementary JFET transistors (T1, T2), the gates of which are connected to the input of the charge integrator (120), characterized in that an n-type transistor (T1) of the complementary pair of transistors (T1, T2) has its drain connected to a voltage regulating system (122).
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subjects AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
TESTING
title System and method for accumulating and measuring a slowly varying electrical charge
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