| 摘要 |
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.
|
