Magnetic sensor and an integrated circuit
First Claim
1. A magnetic sensor, comprising:
- a housing;
an input port and an output port, both extending from the housing, wherein the input port is to be connected to an external alternating current (AC) power supply; and
an electrical circuit comprising;
an output control circuit coupled with the output port and configured to;
control, when a predetermined condition is satisfied, the predetermined condition comprising a voltage of the magnetic sensor reaching a predetermined voltage threshold for a predetermined period, the magnetic sensor being configured to operate in at least one of a first state and a second state, wherein;
in the first state, a load current flows in a first direction from the output port to outside of the magnetic sensor, andin the second state, the load current flows in a second direction opposite that of the first direction from the outside of the magnetic sensor into the magnetic sensor via the output port, andcontrol, when the predetermined condition is not satisfied, the magnetic sensor to operate in a third state,wherein an operating frequency of the magnetic sensor is positively proportional to a frequency of the external AC power supply, andwherein there is no or a negligible amount of load current flowing through the output port when the magnetic sensor is in the third state.
2 Assignments
0 Petitions
Accused Products
Abstract
The present teaching relates to a magnetic sensor that comprises a housing, an input port and an output port, both extending from the housing and the input port being connected to an external alternating current (AC) power supply, and an electrical circuit. The electrical circuit comprises an output control circuit coupled with the output port and configured to be responsive to a magnetic induction signal to control the magnetic sensor to operate in a state in which a load current flows through the output port when a predetermined condition is satisfied, and operate in another state when the predetermined condition is not satisfied. The operating frequency of the magnetic sensor is positively proportional to the frequency of the external AC power supply.
5 Citations
17 Claims
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1. A magnetic sensor, comprising:
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a housing; an input port and an output port, both extending from the housing, wherein the input port is to be connected to an external alternating current (AC) power supply; and an electrical circuit comprising; an output control circuit coupled with the output port and configured to; control, when a predetermined condition is satisfied, the predetermined condition comprising a voltage of the magnetic sensor reaching a predetermined voltage threshold for a predetermined period, the magnetic sensor being configured to operate in at least one of a first state and a second state, wherein; in the first state, a load current flows in a first direction from the output port to outside of the magnetic sensor, and in the second state, the load current flows in a second direction opposite that of the first direction from the outside of the magnetic sensor into the magnetic sensor via the output port, and control, when the predetermined condition is not satisfied, the magnetic sensor to operate in a third state, wherein an operating frequency of the magnetic sensor is positively proportional to a frequency of the external AC power supply, and wherein there is no or a negligible amount of load current flowing through the output port when the magnetic sensor is in the third state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A magnetic sensor, comprising:
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a housing; an input port and an output port, both extending from the housing, wherein the input port is coupled with an external alternating current (AC) power supply; and an electrical circuit comprising; an output control circuit coupled with the output port, and configured to be responsive to a magnetic induction signal to control the magnetic sensor to operate in a first state in which a load current flows through the output port when a predetermined condition is satisfied, and operate in one of a second state or a third state when the predetermined condition is not satisfied, wherein, in the second state, the load current flows to the magnetic sensor from the output port when the predetermined condition is not satisfied, and wherein in the third state, there is no or a negligible amount of load current flowing through the output port, the predetermined condition comprising a voltage of the magnetic sensor reaching a predetermined voltage threshold for a predetermined period, and wherein; an operating frequency of the magnetic sensor is positively proportional to a frequency of the external AC power supply.
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14. An integrated circuit for a magnetic sensor, comprising:
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a semiconductor substrate; an input port and an output port, the input port being coupled with an external alternating current (AC) power supply; and an electrical circuit on the semiconductor substrate, wherein the electrical circuit comprises; an output control circuit coupled with the output port and configured to be at least responsive to a magnetic induction signal to control the magnetic sensor to operate in at least one of a first state and a second state when a predetermined condition is satisfied, the predetermined condition comprising a voltage of the magnetic sensor reaching a predetermined voltage threshold for a predetermined period, and operate in a third state when the predetermined condition is not satisfied, wherein in the first state, a load current flows in a first direction from the output port to outside of the magnetic sensor, in the second state, a load current flows in a second direction opposite that of the first direction from outside of the magnetic sensor into the magnetic sensor via the output port, in the third state, there is no or a negligible amount of load current flowing through the output port, and an operating frequency of the magnetic sensor is positively proportional to a frequency of the external AC power supply. - View Dependent Claims (15, 16)
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17. A motor assembly, comprising:
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a motor configured to operate based on an alternating current (AC) power supply; a magnetic sensor configured to detect a magnetic field generated by the motor and operate in an operating state determined based on the magnetic field; and a bi-directional AC switch serially coupled with the motor and configured to control the motor based on an operating state of the magnetic sensor, wherein the magnetic sensor comprises; an input port and an output port, wherein the input port is coupled with the AC power supply and the output port is coupled with a control terminal of the bi-directional AC switch, and an electrical circuit comprising; an output control circuit configured to be at least responsive to a magnetic induction signal, that is indicative of at least one characteristic of the magnetic field, to control the magnetic sensor to operate in at least one of a first state and a second state when a predetermined condition is satisfied, the predetermined condition comprising a voltage of the magnetic sensor reaching a predetermined voltage threshold for a predetermined period, and operate in a third state when the predetermined condition is not satisfied, wherein in the first state, a load current flows in a first direction from the output port to outside of the magnetic sensor, in the second state, a load current flows in a second direction opposite that of the first direction from outside of the magnetic sensor into the magnetic sensor via the output port, in the third state, there is no or a negligible amount of load current flowing through the output port, and an operating frequency of the magnetic sensor is positively proportional to a frequency of the external AC power supply.
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Specification