Blast initiating circuitry for a blasting machine

Details Blast initiating circuitry for a blasting machine Blast initiating circuitry for a blasting machine

F - Mech Eng,Light,Heat,Weapons

23

Q

328/196, 317/5.9

F23Q 7/02 (2006.01) G01V 1/06 (2006.01)

Patent

CA 1065393

ABSTRACT OF THE DISCLOSURE A blasting machine comprising a pulse generator which delivers its pulses to a control signal transmitting circuit that in turn delivers the pulses to driven blast initiating circuitry. The control signal transmitting circuit includes an electronic switch which is not only turned on and off by the pulse generator but is also turned off by a deactivating circuit when the voltage of a power supply for the machine is below a predetermined level. When the voltage of the power supply is above this predetermined level, the deactivating circuit is made inoperative so that it can no longer turn off the electronic switch.

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