Back to results
US 2011/0235218 A1Published application
Control circuit and motor device
AssigneeJohnson Electric S.A.
InventorsEN HUI WANG, FEI XIN, CHI PING SUN, MING LI ZHANG
Life of this patent
Estimating the term…
Abstract
A control circuit has an input terminal for receiving an input voltage, an energy accumulator for storing electric energy from the input terminal and supplying power to an electrical load, and an over-voltage protection unit for lowering the voltage at the input terminal when the voltage at an output terminal of the energy accumulator exceeds a predetermined threshold value. A motor device combines the control circuit with an electric motor as the load.
Claims19
A control circuit comprising:
- an input terminal for receiving an input voltage;
- an energy accumulator for storing electric energy from the input terminal and supplying power to an electrical load;
- and
- an over-voltage protection unit for lowering the voltage at the input terminal when the voltage at an output terminal of the energy accumulator exceeds a predetermined threshold value.
1 more element
A motor device comprising a motor and a control circuit, wherein the control unit comprises:
- an input terminal arranged to receive an input voltage;
- an energy accumulator for storing electric energy from the input terminal and supplying power to the motor;
- and
- an over-voltage protection unit for lowering the voltage at the input terminal when the voltage at an output terminal of the energy accumulator exceeds a predetermined threshold value.
1 more element
Dependencies are inferred from the claim text.