ELECTRONIC DETONATOR

PURPOSE:To improve operability on the occasion of being fitted as a master die to explosives, by a method wherein a capacitor to be charged with electric energy supplied from a firing device is constructed of a chip capacitor. CONSTITUTION:When a capacitor 5 is supplied with electric energy from a firing device 22, it starts to be charged therewith, and a constant voltage circuit 6 receives a terminal voltage of the capacitor 5 as an input and outputs a prescribed constant voltage. When a thyristor 11 receives a signal as an input from a voltage comparator circuit 10, it closes the circuit and makes a resistor 12 for ignition electrified by the electric energy charged in the capacitor 5. Being electrified by the electric energy, the resistor 12 for ignition generates a heat and ignites a detonator. Herein the capacitor 5 is constructed by using a tantalum electrolytic capacitor of a resin mold chip of a capacitance 100muF and a rated voltage 6V. In this way, an electronic circuit part of an electronic detonator can be constructed to be slender and small in size.