Electromagnetic pulse coupling network
AssigneeHoneywell Inc.
InventorRobert M. Murray
Life of this patent
Estimating the term…
Abstract
A coupling network for electromagnetic pulsed testing arrangements includes three stacks of toroidal ferrite cores. Two of the stacks are of identical diameter, the third stack has a diameter approximately equal to the combined diameters of the first two stacks. A copper tube looped through the central aperture of the first two stacks forms a primary winding. An insulated wire looped twice through the first two apertures forms a secondary winding of a 1:2 step-up transformer. The winding is extended through the aperture of the third stack. The third stack is operable to permit the laying in of a cable connected to a device under test. The cable forms the secondary of an isolation transformer.
Claims17
A network for coupling EMP test signals to a cable, said network comprising:
- a first stack of a first plurality of toroidal shaped cores, said first stack having a central aperture;
- a second stack of a second plurality of toroidal shaped cores, said second stack having a central aperture;
- a third stack of a third plurality of toroidal shaped cores, said third stack having a central aperture;
- said third stack being substantially equal in diameter to the sum of the diameters of said first and second stacks, said third stack being split substantially parallel to its longitudinal axis to form first and second portions to be opened to thereby accommodate the placement of a cable into the central aperture of said third stack;
- said first and second stacks being placed adjacent to each other and both being placed adjacent to said third stacks;
- a primary winding wound through the apertures of said first and second stacks;
- and
- a secondary winding through the apertures of said first and second stacks and being wound such that said primary and secondary windings of said first and second stacks form a step-up transformer, said secondary winding extending through the aperture of said third stack to form a primary winding therein which is coupleable to said cable.
A test arrangement for testing apparatus for susceptibility to EMP by coupling signals to a cable connected to said apparatus, said arrangement comprising:
- a source of damped sine wave signals;
- and
- a network for coupling said source to said cable, said network comprising:
- a first stack of a first plurality of toroidal shaped cores, said first stack having a central aperture;
- a second stack of a second plurality of toroidal shaped cores, said second stack having a central aperture;
- a third stack of a third plurality of toroidal shaped cores, said third stack having a central aperture;
- said third stack being substantially equal in diameter to the sum of the diameters of said first and second stacks, said third stack being split substantially parallel to its longitudinal axis to form first and second portions to be opened to thereby accommodate the placement of a cable into the central aperture of said third stack;
- said first and second stacks being placed adjacent to each other and both being placed adjacent to said third stack;
- a primary winding wound through the apertures of said first and second stacks;
- a secondary winding wound through the apertures of said first and second stacks and being wound such that said primary and secondary windings of said first and second stacks form a step-up transformer, said secondary winding extending through the aperture of said third stack to form a primary winding therein which is coupleable to said cable.
Dependencies are inferred from the claim text.