FIELD: physics.
SUBSTANCE: proposal is given of a sensitive device for detecting charged particles and/or quanta of electromagnetic radiation. The sensitive device has a sensing apparatus (12) and an amplifier circuit (14); (M1, M4). The sensing apparatus (12) transmits a signal to the input unit Vin of the amplifier; (M1, M4), so as to induce change in the level of Vout at the output unit of the amplifier (14). The negative feedback device (T1); (M2) reacting to the change in the level at the output unit, changes effect on the negative feedback device, so as to increase loop gain of the given amplifier circuit (14); (M1, M4). Current mirror (T2, T3); (M3, M6) repeatedly restores the initial level in the output unit. A sensitive device for detecting a single particle and an integrating sensitive device are hereby invented.
EFFECT: reduced connection volume and simplification of assembling when connecting the sensor to the amplifier.
25 cl, 27 dwg
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