초록 ▼

A solid state switch for electro-explosive devices. Fundamentally, the switch includes a matrix of transformers, each having a center-tap primary winding and a grounded secondary winding, the secondary having a bridge wire connected thereacross. Power gating circuitry is provided for applying a DC v

A solid state switch for electro-explosive devices. Fundamentally, the switch includes a matrix of transformers, each having a center-tap primary winding and a grounded secondary winding, the secondary having a bridge wire connected thereacross. Power gating circuitry is provided for applying a DC voltage to the center-tap primary of all transformers in a selected row. A pair of transistors are connected through diodes to opposite ends of all of the primary windings of the transistors in each column. A driver alternately gates the pair of transistors of a selected column into and out of conduction such that the current through the primary of the transformer common to both the selected row and selected column is of alternating direction, inducing an AC current into the associated secondary winding. The bridge wire of the secondary is thus energized by an AC current.

대표청구항 ▼

In an apparatus for energizing electroexplosive devices, the improvement comprising: a matrix of rows and columns of transformers, each having a center-tap primary winding and a second winding in inductive communication therewith; a bridge wire of a uniquely associated electro-explosive device conne

In an apparatus for energizing electroexplosive devices, the improvement comprising: a matrix of rows and columns of transformers, each having a center-tap primary winding and a second winding in inductive communication therewith; a bridge wire of a uniquely associated electro-explosive device connected across each said secondary winding; a plurality of first gating means, one connected in common to the center tap of said primary windings of all transformers in a common row, for selectively applying a voltage level to the center tap of all transformers in such row; and a plurality of second gating means, one connected in common across said primary windings of all transformers in a common column, for completing a current path through the associated primary windings.