Invention Grant
- Patent Title: Method and apparatus for quiet fan speed control
- Patent Title (中): 安静风扇转速控制的方法和装置
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Application No.: US12607788Application Date: 2009-10-28
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Publication No.: US08193744B2Publication Date: 2012-06-05
- Inventor: James P. Steiner , Aaron Dobbins , Chen Ming Wu
- Applicant: James P. Steiner , Aaron Dobbins , Chen Ming Wu
- Applicant Address: US PA Coopersburg
- Assignee: Lutron Electronics Co., Inc.
- Current Assignee: Lutron Electronics Co., Inc.
- Current Assignee Address: US PA Coopersburg
- Agency: Ostrolenk Faber LLP
- Main IPC: H02P7/06
- IPC: H02P7/06

Abstract:
A method for controlling the speed of an AC motor by means of an AC motor speed control having a plurality of capacitors operable to be selectively coupled in parallel electrical connection, the parallel coupled capacitors operable to be coupled in series electrical connection with the AC motor, the method comprising charging the capacitors up to substantially the same predetermined voltage prior to combining the capacitors in parallel electrical connection.
Public/Granted literature
- US20100109597A1 METHOD AND APPARATUS FOR QUIET FAN SPEED CONTROL Public/Granted day:2010-05-06
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