Timer-controlled clamp for initiation elements
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United States of America Patent
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Issued Date -
May 11, 2006
app pub date -
Jul 21, 2003
filing date -
Jul 24, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention relates to protective circuitry (12) for electrical initiation elements (10) and finds utility in preventing inadvertent functioning of electrical bridge-initiation elements, such as semiconductor bridges (SCBs), bridgewires, etc., by transient environmental electrical signals. The protective circuitry (12) of this invention comprises a timer portion (14) and a clamping portion (16) and is designed to divert from the electrical initiation element (10) at least a portion of an electrical signal received at the input nodes (10a, 10b) thereof for a suitable time interval that corresponds to the duration of an expected transient signal, which is typically significantly smaller than the duration of a proper initiation signal.
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