Magnetic sensor and an integrated circuit

An integrated circuit implementing a magnetic sensor, wherein the magnetic sensor is formed in a semiconductor substrate, and the magnetic sensor comprises:

• 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 which comprises:
• an output control circuit coupled with the output port and configured to be at least responsive to a magnetic induction signal and, when a predetermined condition is satisfied, to control the magnetic sensor to operate in at least one of a first state and a second state, the predetermined condition being set as a predetermined period that a voltage of the magnetic sensor reaches a predetermined voltage threshold;
• and
• a sub-circuit configured to determine whether the predetermined condition is satisfied,
• wherein the sub-circuit comprises:
• a voltage detecting circuit configured to detect a specific voltage and, when the specific voltage equals to or is greater than a predetermined voltage threshold, output a triggering signal, and
• a delay circuit coupled with the voltage detecting circuit and configured to time, upon receiving the triggering signal, a length of time during which the specific voltage equals to or is greater than the predetermined voltage threshold.

A motor assembly, comprising:

• a motor configured to operated based on an alternating current (AC) power supply;
• 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 which comprises:
• an output control circuit coupled with the output port and configured to be at least responsive to a magnetic induction signal and, when a predetermined condition is satisfied, to control the magnetic sensor to operate in at least one of a first state and a second state, the predetermined condition being set as a predetermined period that a voltage of the magnetic sensor reaches a predetermined voltage threshold;
• and
• a sub-circuit configured to determine whether the predetermined condition is satisfied;
• and
• a bi-directional AC switch serially coupled with the motor and configured to control the motor based on the operating state of the magnetic sensor,
• wherein the sub-circuit comprises:
• a voltage detecting circuit configured to detect a specific voltage and, when the specific voltage equals to or is greater than a predetermined voltage threshold, output a triggering signal, and
• a delay circuit coupled with the voltage detecting circuit and configured to time, upon receiving the triggering signal, a length of time during which the specific voltage equals to or is greater than the predetermined voltage threshold.