Current-voltage converter for the measurement of weak current capable of working under strong x or radiation

The invention concerns a current-voltage converter comprising electronic means (3,R) to supply a voltage (Vout)from a current (Iph). The converter comprises first means (4, K) to apply or not apply the current at converter input, second means (ECH1) to sample and memorize a voltage (Vout1) at conver...

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Bibliographische Detailangaben
Hauptverfasser:	CHAMBAUD PASCAL, KAIS MIKAEL, JOFFRE FRANCIS
Format:	Patent
Sprache:	eng
Schlagworte:	ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS BASIC ELECTRIC ELEMENTS ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRICITY MEASUREMENT OF NUCLEAR OR X-RADIATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR PHYSICS SEMICONDUCTOR DEVICES TARIFF METERING APPARATUS TESTING
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Beschreibung
Zusammenfassung:	The invention concerns a current-voltage converter comprising electronic means (3,R) to supply a voltage (Vout)from a current (Iph). The converter comprises first means (4, K) to apply or not apply the current at converter input, second means (ECH1) to sample and memorize a voltage (Vout1) at converter output when the current is applied at converter input, third means (ECH2) to sample and memorize a voltage (Vout2, Vout3) at converter output when the current is not applied at converter input, and fourth means (S) for subtracting the voltage sampled and memorized by the third means (ECH2) from the voltage sampled and memorized by the second means (ECH1). The invention applies more especially to the measurement of weak currents in severe nuclear environments.