Electronic control system having power source relay fusion...

Details Electronic control system having power source relay fusion... Electronic control system having power source relay fusion...

2007-03-27

2007-03-27

Jackson, Stephen W. (Department: 2836)

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

Reexamination Certificate

active

11022841

ABSTRACT:
An electronic control system comprises a power source, a controller and a power source relay for supplying and cutting off a supply of power to the controller. A fusion detecting circuit includes a capacitor and a first resistor connected to the power source relay to detect fusion of the power source relay. A second resistor is connected in parallel to the first resistor. A switching element is connected to one of the first resistor and the second resistor in series. The switching element is set to an ON-state when the power source relay is set to the OFF-state, thereby discharging a charge accumulated in the capacitor through the first resistor and the second resistor.

REFERENCES:
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patent: 6577024 (2003-06-01), Kikuta et al.
patent: 6795762 (2004-09-01), Itoh et al.
patent: 2002/0057015 (2002-05-01), Kikuta et al.
patent: 2 333 914 (1999-08-01), None
patent: A-2004-32903 (2004-01-01), None
Communication pursuant to Article 96(2) dated Nov. 22, 2006 from European Patent Office for counterpart application of 04 030 992.4-2425.

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