DEVICE BLASTING PYROTECHNIC DEVICE Russian patent published in 2017 - IPC F42D1/05 F42C11/00 

FIELD: pyrotechnics.

SUBSTANCE: invention relates to systems for initiation of pyro device. Pyro device blasting instrument comprises a microcontroller, each output of which is connected to control input of corresponding relay switch, blasting circuits, power source, negative terminal of which is connected to first lead of first electronic switch, first, second and third resistors, capacitor, galvanic isolation unit and second electronic switch. First leads of relay switches are connected to first leads of blasting circuits. Control input of second electronic switch is connected to first leads of capacitor, third resistor and via first resistor is connected to second lead of first electronic switch and second leads of each relay switch. Second leads of third resistor and capacitor and first lead of second electronic switch are connected to negative terminal of power source, to positive terminal of which are connected second leads of blasting circuits. Second lead of second electronic switch is connected to control input of first electronic switch, first lead of which is connected to negative output of galvanic isolation unit, positive output of which is connected via second resistor to control input of first electronic switch, wherein inputs of galvanic isolation unit are connected to corresponding additional outputs of microcontroller.

EFFECT: technical result is higher noise immunity.

1 cl, 2 dwg