Invention Grant
- Patent Title: Fan conducted noise reduction
- Patent Title (中): 风扇降噪
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Application No.: US13630585Application Date: 2012-09-28
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Publication No.: US09024547B2Publication Date: 2015-05-05
- Inventor: Randall Vogt
- Applicant: Randall Vogt
- Applicant Address: US CA San Jose
- Assignee: Allied Telesis, Inc.
- Current Assignee: Allied Telesis, Inc.
- Current Assignee Address: US CA San Jose
- Main IPC: F04D15/00
- IPC: F04D15/00 ; H02P3/00 ; H02P7/28
Abstract:
Apparatus and methods for reducing unwanted conducted noise generated by a DC load 17. Load 17 is powered by a voltage source 11. A current sense 13 senses pulse current Ifan flowing through the load 17. First converting means 14, 15, 16 converts the sensed pulse current Ifan to a correction voltage Vp. The correction voltage Vp is then converted to a correction current Ip, which offsets the deleterious effects of Ifan. The current Is flowing through the voltage source 11 equals Ifan plus the correction current Ip.
Public/Granted literature
- US20140091735A1 Fan Conducted Noise Reduction Public/Granted day:2014-04-03
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