Electronic device

Details Electronic device Electronic device

1989-07-25

1991-08-13

Kyle, Deborah L.

Ammunition and explosives

Igniting devices and systems

Ignition or detonation circuit

102217, F42C 1106, F42C 1104

Patent

active

050386824

ABSTRACT:
A remote controllable electronic detonator and a method of detonating an explosive charge are disclosed and claimed. The detonator comprises an antenna 16, a RF receiver 15, an energy storage capacitor 17, a switch 18, a delay time circuit 21 and a fuse 19. The method comprises the steps of transmitting to the detonator, by means of transmitter 11, a wave comprising a carrier amplitude modulated by a low frequency modulating signal, receiving the wave and utilizing energy in the wave to charge capacitor 17, enabling switch 18 by increasing the frequency of the modulating signal and communicating, by means of the wave, a fire command signal to the detonator. After a predetermined time delay, switch 18 connects capacitor 17 to fuse 19 thereby to energize the fuse.

REFERENCES:
patent: 3170399 (1965-02-01), Hinman, Jr.
patent: 3834310 (1974-09-01), Ueda et al.
patent: 4536693 (1985-08-01), Marek
patent: 4615268 (1986-10-01), Nakano et al.

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