Electricity: electrical systems and devices – Igniting systems
Reexamination Certificate
2007-10-23
2007-10-23
Sherry, Michael (Department: 2836)
Electricity: electrical systems and devices
Igniting systems
Reexamination Certificate
active
10975858
ABSTRACT:
Switch card apparatus are disclosed. In one embodiment, a circuit includes a first portion having a first switch adapted to be coupled to a first voltage, a second portion including a second switch, and a third portion including a third switch. The first portion activates the first switch to couple the first voltage to the second portion. Similarly, the second portion activates the second switch in response to a second input signal and the first voltage to couple a second voltage to the third portion. Finally, the third portion activates the third switch in response to a third input signal and in response to the second voltage from the second portion to couple a control voltage to a load. Embodiments of the invention provide the desired reliability suitable for a variety of electrical systems, including arming and firing applications over a wide voltage and wide current range.
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Kubinski Ronald A.
Nguyen Huan N.
Phan Tuan T.
Smith Gregory H.
Hoang Ann T.
Sherry Michael
The Boeing Company
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