High energy switching circuit for initiator means or the like and method therefor
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United States of America Patent
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-
Dec 24, 1985
Grant Date -
N/A
app pub date -
Mar 19, 1984
filing date -
Mar 19, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A high energy switching circuit for an initiator, for example, an exploding bridgewire (EBW) or slapper-type detonator, includes a charged capacitor which is placed across a pair of series diodes connected in a reverse standoff voltage mode with respect to the capacitive voltage in series with an EBW initiator circuit. A switching field effect transistor is connected in shunt across the lower diode. In the armed condition, the pair of diodes clamp the high energy capacitor voltage at their reverse avalanche voltage. Upon the activation of the switching transistor, the capacitor voltage is impressed across the upper diode and a high reverse current flows through the upper diode placing it in destructive conduction which immediately also forces the other diode into destructive conduction to complete the series circuit from the capacitor to the EBW or slapper detonator. The circuit comprises low cost components and features very good firing simultaneity between similar firing circuits.
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