초록 ▼

An electronic delay detonator actuated after the lapse of a predetermined delay time from the application of an input power source, comprises a capacitor for storing the electrical energy supplied from the input power source, a diode bridge for preventing the stored electrical energy from being rele

An electronic delay detonator actuated after the lapse of a predetermined delay time from the application of an input power source, comprises a capacitor for storing the electrical energy supplied from the input power source, a diode bridge for preventing the stored electrical energy from being released reversely toward the input power source, a CR oscillator, a counter for generating a signal upon having counted a pulse signal produced from the CR oscillator by a predetermined number, and a thyristor driven by the signal for supplying the electrical energy stored in the capacitor to an ignition device in the detonator, the delay time being accurately determined by counting the pulses generated from the CR oscillator.

대표청구항 ▼

An electronic delay detonator for driving an ignition device with a predetermined time delay by being supplied with electrical energy, comprising: input terminal means for supplying the electrical energy to said delay detonator; a first capacitor for storing said electrical energy; means inserted be

An electronic delay detonator for driving an ignition device with a predetermined time delay by being supplied with electrical energy, comprising: input terminal means for supplying the electrical energy to said delay detonator; a first capacitor for storing said electrical energy; means inserted between said input terminal means and said first capacitor for preventing said stored electrical energy from being released through said input terminal means; oscillator means electrically connected to said first capacitor and including a resistor and a second capacitor, for producing a plurality of pulse signals of a period proportional to the product of the resistance value of said resistor and the capacitance value of said second capacitor. said oscillator means also including a C-MOS integrated circuit; means connected across said first capacitor for generating a constant voltage, said constant voltage generating means including a series connection of a diode-connected junction-type field effect transistor and a zener diode, said C-MOS integrated circuit being operated by said constant voltage generated across said zener diode; means for counting said plurality of pulse signals and for producing a first signal upon counting said pulse signals up to a number corresponding to said predetermined delay time; and means responsive to said first signal for supplying the electrical energy stored in said first capacitor to said ignition device.