Electricity: electrical systems and devices – Igniting systems – For electric spark ignition
Patent
1994-07-25
1996-08-20
Fleming, Fritz
Electricity: electrical systems and devices
Igniting systems
For electric spark ignition
361263, H01T 1500
Patent
active
055484719
ABSTRACT:
Disclosed is a DC-powered spark-generating circuit for igniting fuel. Such circuit has two primary windings on a common transformer core and a separate transistor controlling power to each primary winding. Each transistor has a gate and a drain and such gates and drains are "cross-coupled." That is, the gate of the first transistor is coupled to the drain of the second transistor and the drain of the first transistor is coupled to the gate of the second. Also disclosed is a method for spark-igniting fuel. Such method includes applying a voltage across an air gap at a first frequency, establishing an arc across the air gap and maintaining the arc at least until the fuel ignites. Such arc is maintained at a second frequency which different from (and preferably higher than) the first frequency.
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Fleming Fritz
Webster Heating and Specialty Products, Inc.
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