114results about "Make-and-break ignition" patented technology

High sparking initiator compositions with a controlled amount of power are disclosed. The initiator compositions comprise a metal containing oxidizing agent, at least one metal reducing agent, and a non-explosive binder. Low voltage igniters that provide bidirectional plumes upon ignition are also disclosed. These igniters have a electrically resistive element positioned across a hole in a support which directs the plume. These igniters and compositions are useful in the actuation of solid fuel heating unit, in particular, sealed heating units.

A device having an initiator and an integrated planar switch. The initiator has a base, an initiating element that is coupled to the base, a first element pad, which is electrically coupled to a first side of the initiating element, and a second element pad, which is electrically coupled to a second side of the initiating element opposite the first element pad. The integrated planar switch has a source pad and a return pad. The source pad is coupled to the base and is spaced apart from the first element pad by a first gap distance to define a first gap therebetween. The return pad is coupled to the base and is spaced apart from the second element pad by a second gap distance to define a second gap therebetween.

Embodiments related to operating a high-side switch in a safety-related application are described and depicted.

A structure of and method for producing a multilayer printed or wiring circuit board, and more particularly a method producing so-called z-axis or multilayer electrical interconnections in a hierarchial wiring structure in order to be able to provide for an increase in the number of inputs and outputs (I / O) in comparison with a standard printed wiring board (PWB) arrangement, and a printed wiring board produced by the method.

A turbine engine ignition exciter circuit applies energy stored in the exciter tank capacitor to the load (igniter plug) through a thyristor type semiconductor switching device that minimizes leakage current at elevated operating temperatures. The semiconductor switching device is periodically activated by a trigger circuit to initiate discharge of energy stored in exciter tank capacitor to mating ignition lead and igniter plug. The circuit operates at a modest, for example, approximately 1.8 kV, tank circuit voltage to further reduce switching device leakage current related stresses at elevated temperatures allowing relatively long capacitor charge cycles, increased upper operating temperature capability and improved reliability. The circuit uses a low side switch circuit topology for releasing energy from said capacitor to ground whereby negative polarity energy is applied to the exciter.

A device having an initiator and an integrated planar switch. The initiator has a base, an initiating element that is coupled to the base, a first element pad, which is electrically coupled to a first side of the initiating element, and a second element pad, which is electrically coupled to a second side of the initiating element opposite the first element pad. The integrated planar switch has a source pad and a return pad. The source pad is coupled to the base and is spaced apart from the first element pad by a first gap distance to define a first gap therebetween. The return pad is coupled to the base and is spaced apart from the second element pad by a second gap distance to define a second gap therebetween.

A circuit and a method are given, to realize a very efficient driver device for igniters or squibs as used e.g. in airbag applications. Special attention has been turned to include secure and always reliable operating features into the device and at the same time to reach for a low-cost implementation with modern integrated circuit technologies. Controlled firing operation and sophisticated diagnostic mechanisms are realized. These design features have to a great extent been acquired by consequently using current mirror circuit principles. Current trimming and limitation to secure values are part of the solution.