Motor driving circuit and motor component
First Claim
1. A motor driving circuit comprising:
- a current switch connected in series with a motor across two terminals of a power supply, wherein the current switch is connected between a first node and a second node;
a rectifying circuit having a first input terminal and a second input terminal;
a first voltage drop circuit and a second voltage drop circuit connected in series between the first input terminal of the rectifying circuit and the first node, the rectifying circuit rectifying a current supplied from the power supply through the first voltage drop circuit and the second voltage drop circuit, wherein there is a third node between the first voltage drop circuit and the second voltage drop circuit, and the first voltage drop circuit is connected between the first node and the third node; and
a switch circuit connected between the third node and a control terminal of the current switch, wherein the switch circuit comprises a first terminal, a second terminal, a control terminal and a switch arranged between the first terminal and the second terminal.
2 Assignments
0 Petitions
Accused Products
Abstract
A motor driving circuit and a motor component are provided. The motor driving circuit includes a bidirectional alternating current switch connected in series with a motor across two terminals of an external alternating current power supply, where the bidirectional alternating current switch is connected between a first node and a second node; a rectifying circuit; a magnetic sensor, configured to detect a magnetic field of a rotor and output a corresponding magnetic inductive signal; a first voltage drop circuit and a second voltage drop circuit connected in series between the first input terminal of the rectifying circuit and the first node, where there is a third node between the first voltage drop circuit and the second voltage drop circuit, and the first voltage drop circuit is connected between the first node and the third node; a switch circuit connected between the third node and a control terminal of the bidirectional alternating current switch, where the switch circuit includes a first terminal, a second terminal, a control terminal and a switch arranged between the first terminal and the second terminal; and a switch control circuit connected between the control terminal of the switch circuit and an output terminal of the magnetic sensor.
8 Citations
14 Claims
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1. A motor driving circuit comprising:
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a current switch connected in series with a motor across two terminals of a power supply, wherein the current switch is connected between a first node and a second node; a rectifying circuit having a first input terminal and a second input terminal; a first voltage drop circuit and a second voltage drop circuit connected in series between the first input terminal of the rectifying circuit and the first node, the rectifying circuit rectifying a current supplied from the power supply through the first voltage drop circuit and the second voltage drop circuit, wherein there is a third node between the first voltage drop circuit and the second voltage drop circuit, and the first voltage drop circuit is connected between the first node and the third node; and a switch circuit connected between the third node and a control terminal of the current switch, wherein the switch circuit comprises a first terminal, a second terminal, a control terminal and a switch arranged between the first terminal and the second terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification