HIGH-SPEED IMITATOR WITH CAPACITANCE-TYPE TARGET DETECTOR Russian patent published in 2016 - IPC F42C13/08 

FIELD: electricity.

SUBSTANCE: high-speed imitator with capacitance-type target detector includes power supply source, two insulated electrodes of the target detector, which together with square-wave generator with permanent amplitude and varying frequency are included into the circuit sensitive to change in capacitance between theses electrodes and coupled to the circuit detecting signals outputted from the square-wave generator. The signal detecting circuit is coupled to the actuator. The design includes protection device for the circuit of generator communication to one of electrodes of the target detector from impact of electromagnetic interference, which is operated within frequency range exceeding operating range of the target detector; it includes feedthrough capacitor, resistor and screen covering the resistor, which is connected via feedthrough capacitor to the circuit sensitive to change in capacitance between the electrodes. At that other electrode of the target detector is made as a whole shell and feedthrough capacitor is placed at its surface and has circular electric contact, as well as the screen. In regard to the screen the resistor is placed with a gap, which value is not more than 1/2 of the resistor length.

EFFECT: invention allows increase in safe handling and survival in conditions of affecting electromagnetic fields.

2 dwg