Electrical circuit for a cooking apparatus and method of making

Details Electrical circuit for a cooking apparatus and method of making Electrical circuit for a cooking apparatus and method of making

1984-02-24

1985-08-06

Griffin, Donald A.

Electricity: electrical systems and devices

Igniting systems

For electric spark ignition

431264, F23Q 300

Patent

active

045339732

ABSTRACT:
An electrical circuit for a cooking apparatus and a method of making the same are provided, the circuit being adapted to cause sparking at a first igniter for a top burner by causing current flow through the primary of a first transformer and to cause sparking at a second igniter for an oven burner by causing current flow through the primary of a second transformer. The circuit has a main circuit branch having opposed ends and being adapted to be interconnected to an electrical power source at the opposed ends thereof so as to charge a main capacitor that causes the current flow through the primaries when a gate of an SCR of the main branch is activated, the circuit having two activating circuit branches each being adapted to activate the gate. Each activating branch has a neon bulb and a capacitor which causes its respective neon bulb to fire and activate the gate when its respective capacitor is charged to a value that reaches the breakover voltage of its respective neon bulb, one of the activating branches causing spark quenching when a flame appears in an oven spark gap. A switching arrangement is disposed in the circuit by being interconnected to the main circuit branch intermediate the opposed ends thereof and is adapted to selectively interconnect each activating branch to the main branch and thereby activate the interconnected activating branch so as to cause sparking at the igniter.

REFERENCES:
patent: 3490435 (1970-01-01), Rice
patent: 4015928 (1977-04-01), Carlson
patent: 4404616 (1983-09-01), Miyanaka et al.
patent: 4413303 (1983-11-01), Cheary et al.
Prior known electrical circuit as illustrated in FIG. 1 of _this patent application.

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