Electricity: electrical systems and devices – Igniting systems – For electric spark ignition
Patent
1986-11-17
1987-07-28
Gellner, Michael L.
Electricity: electrical systems and devices
Igniting systems
For electric spark ignition
336183, 431264, F23Q 300
Patent
active
046835180
ABSTRACT:
An oil burner ignition system includes a transformer primary winding feedback coil and dual secondary coil wound in axially coextensive and mutually coupled relation about a ferrite core. The primary winding and feedback coil are wound continuously about the core and disposed within a bobbin which supports the secondary coil. The primary and feedback coil have a common end connection in circuit with the emitter of a switching transistor. The other end of the feedback coil is connected through a capacitor and resistor circuit to the base of the transistor. The collector and base of the transistor are connected by a circuit to receive unipolar pulses of electrical energy. A resistor is connected between the base and the collector of the transistor to bias the transistor "on". The feedback coil is disposed to have voltage induced therein by changing current flow through the primary winding and the collector-emitter electrodes of the transistor. The induced voltage is connected to the base of the transistor by the capacitor and resistor circuit to drive the transistor to saturation which causes the transistor to turn "off" with the resulting generation in the secondary coil of an ignition spark.
REFERENCES:
patent: 4222089 (1980-09-01), MacAskill, Jr. et al.
patent: 4335423 (1982-06-01), Koizumi et al.
patent: 4403943 (1983-09-01), Stella et al.
patent: 4412269 (1983-10-01), Stella et al.
Gellner Michael L.
Gray David M.
R. E. Phelon Company, Inc.
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