DC motor device and DC fan using the same

Patent metadata

Field	Value
Publication number	US-9103348-B2
Application number	US-201313944381-A
Country	US
Kind code	B2
Filing date	Jul 17, 2013
Priority date	Feb 8, 2013
Publication date	Aug 11, 2015
Grant date	Aug 11, 2015

Abstract

A DC motor device includes a first converting circuit, a second converting circuit, and a DC motor. A switch element is coupled to the DC motor device, and provides an alternating current to the first or second converting circuit. The first converting circuit receives the alternating current, and generates a first rotation speed signal. The second converting circuit receives the alternating current, and generates a second rotation speed signal. The DC motor is driven at a rotation speed according to the first or second rotation speed signal.

First claim

What is claimed is:

1. A DC motor device for an alternating current and coupled to a switch element, the DC motor device comprising:
a first converting circuit, comprising:
a first rectifier circuit, receiving the alternating current, generating a first direct current; and
a first modulator module, receiving the alternating current, generating a first rotation speed signal;

a second converting circuit, comprising:
a second rectifier circuit, receiving the alternating curre…

Assignees

• Delta Electronics Inc

Inventors

• Lin Hsin-Chih
• Tu Ya-Sen
• Chen Lee-Long
• Lin Kuo-Cheng

Classifications

• F04D25/0693 Primary

  Mechanical Engineering · mapped topic

• H02P7/2805

  Electricity · mapped topic

• F04D25/105 Primary

  Mechanical Engineering · mapped topic