ACTIVE POWER BLOCKING CIRCUIT FOR RESTRAINT CONTROL MODULE
First Claim
Patent Images
1. A duplex squib module comprising:
- first squib;
a first active blocking circuit in series with the first squib, the first active blocking circuit having a transistor in series with a first diode to block current in a first direction;
a second squib; and
a second active blocking circuit in series with the second squib, the second active blocking circuit having a transistor in series with a first diode to block current in a second direction opposite of the first direction.
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Abstract
A duplex squib module is provided. The duplex squib module may include a first squib, a second squib, a first active blocking circuit, and a second active blocking circuit: The first active blocking circuit being in series with the first squib. The first active blocking circuit having a transistor in series with a first diode to block current in a first direction. The second active blocking circuit being in series with the second squib. The second active blocking circuit having a transistor in series with a first diode to block current in a second direction opposite of the first direction.
1 Citation
20 Claims
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1. A duplex squib module comprising:
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first squib; a first active blocking circuit in series with the first squib, the first active blocking circuit having a transistor in series with a first diode to block current in a first direction; a second squib; and a second active blocking circuit in series with the second squib, the second active blocking circuit having a transistor in series with a first diode to block current in a second direction opposite of the first direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for testing a duplex squib module having a first squib in series with a first active power blocking circuit in parallel with a second squib in series with a second active power blocking circuit;
- the system comprising;
a first diagnostic current source configured to provide a diagnostic current in a first direction; a second diagnostic current source configured to provide a diagnostic current in a second direction opposite of the first direction; and a measurement circuit configured to measure a first voltage across the first squib and first active power blocking circuit when the first current source is active and measure a second voltage across the second squib and second active power blocking circuit when the second current source is active. - View Dependent Claims (15, 16)
- the system comprising;
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17. An active power blocking circuit in series with a squib, the active power blocking circuit comprising:
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a transistor in series with the squib; and a first diode in series with the transistor and the squib to block current in a first direction. - View Dependent Claims (18, 19, 20)
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Specification