DEVICE FOR SEARCHING TURN-TO-TURN SHORT CIRCUITS IN INDUCTANCE COILS Russian patent published in 2018 - IPC G01R31/06 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measuring equipment. Essence: device for searching turn-to-turn short circuits in inductance coils contains a transformer whose secondary winding is connected through the diode to the storage capacitor and to the serial circuit, consisting of a winding being checked, an electronic power switch controlled from the control unit. Primary winding of the transformer is connected through the electronic switch of the converter to a DC voltage source. Electronic switch of the converter is controlled from the PWM output of the controller. Current sensor is connected in series with the electronic power switch. Current sensor output is connected via the second peak detector to the information input of the second comparator. Voltage from the storage capacitor is fed through the voltage divider on the resistors and through the matching unit to the feedback input of the PWM controller, to the input of the first peak detector and to the input of the differentiator. From the output of the differentiator, the voltage is fed through the rectifier ad through the third comparator to the input of the control unit. Output of the first peak detector is connected to the input of the first comparator and to the reference input of the second comparator. Output of the first comparator is connected to the circuit indicator and the first input of the logic unit. Second input of the logic unit is connected to the output of the second comparator. Output of the logic unit is connected to the indicator of turn-to-turn short circuits.

EFFECT: technical result: increase in the reliability and accuracy of detecting turn-to-turn short circuits.

1 cl, 2 dwg