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Publication of BE683725ApublicationCriticalpatent/BE683725A/xx
H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
H03K3/45—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices
F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
F42D1/04—Arrangements for ignition
F42D1/045—Arrangements for electric ignition
F42D1/05—Electric circuits for blasting
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
H03K17/28—Modifications for introducing a time delay before switching
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03K—PULSE TECHNIQUE
H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
H03K17/28—Modifications for introducing a time delay before switching
H03K17/292—Modifications for introducing a time delay before switching in thyristor, unijunction transistor or programmable unijunction transistor switches