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US 4,141,298 AGranted
Electronic ignition circuit
AssigneeDiehl GmbH & Co.
InventorPeter F. Weidner
Life of this patent
Estimating the term…
Abstract
An electronic ignition circuit for the self-destruction of a projectile fuse, including two condensers chargeable from a single generator, such as a piezoelectric cell. A delay circuit initiates the discharge of the first condenser through an igniter, with the generator raising the voltage of the first condenser to a level necessary for the igniter and that of the second condenser required for operation of the delay circuit.
Claims9
In an electronic ignition circuit for the self-destruction of a projectile fuse, including two condensers;
- a generator for charging said condensers;
- and a delay circuit for initiating the discharge of a first of said condensers through an igniter, said generator charging said first condenser to a voltage required for said igniter and charging the second condenser to a voltage required for said delay circuit, the improvement comprising:
- said first condenser having a capacitance commensurate with the voltage and energy required for the ignition of said igniter and said second condenser having a capacitance commensurate with the voltage and energy required for the operation of said delay circuit;
- a semiconductor element being connected between the voltage potential poles of said condensers, said element being conductive above a voltage threshold value and preventing a charge equalization between said two condensers, said voltage threshold value being slightly below the voltage attainable at charging of said first condenser and corresponds to the difference between the voltages required for said igniter and for said delay circuit.
1 more element
Dependencies are inferred from the claim text.