Electricity: electrical systems and devices – Safety and protection of systems and devices – Voltage regulator protective circuits
Reexamination Certificate
2006-07-25
2006-07-25
Jackson, Stephen W. (Department: 2836)
Electricity: electrical systems and devices
Safety and protection of systems and devices
Voltage regulator protective circuits
Reexamination Certificate
active
07082018
ABSTRACT:
A power supply apparatus for stabilizing a voltage generated on a power supply line by an electric motor, for preventing a battery from being overcharged, preventing an overvoltage from being generated, and protecting system components from an overvoltage, even when a battery is removed or no electric power is supplied from the battery to a control means. The apparatus includes a drive circuit for energizing a permanent-magnet brushless motor and a control circuit for controlling the drive circuit. A power supply state detecting circuit (activating unit) activates the control circuit depending on a voltage value on a power supply line of the motor. A voltage stabilizing means including a relay and a regenerative resistor stabilizes the voltage on the power supply line when the relay is opened and closed under the control of the control circuit. The voltage stabilizing means may include the drive circuit.
REFERENCES:
patent: 3989990 (1976-11-01), Thompson
patent: 5931245 (1999-08-01), Uetake et al.
patent: 05049101 (1993-02-01), None
Birch & Stewart Kolasch & Birch, LLP
Honda Giken Kogyo Kabushiki Kaisha
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