METHOD AND CIRCUIT FOR CONVERTING A MEASURING CURRENT INTO AN IMPULSE RATE PROPORTIONAL TO THE MEASURING CURRENT

摘要

The number of charge quantities supplied during each unit of time indicates the corresp. pulse rate. Pref. a common circuit mode (k) is used as the circuit input for themeasuring current (ix) and for supplying the compensation charges. An integrator and comparator are used for detecting parity between the measuring current (ix) and the supplied charge. The integrator pref. comprises an amplifier (VI) and a capacitor (C), the comparator comprising a second amplifier (V2).