Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Reexamination Certificate
2007-06-04
2009-11-24
Ip, Paul (Department: 2837)
Electricity: motor control systems
Closed loop speed control system for dc motor with commutator
Armature control by digital or combined analog and digital...
C388S822000, C318S268000, C318S471000
Reexamination Certificate
active
07623770
ABSTRACT:
A fan control system includes a power source, a switch control circuit, a switch control signal delivering unit and a fan circuit module. The power source outputs a nominal power, the switch control circuit electrically connects to the power source, the switch control signal delivering unit electrically connects to the switch control circuit and can send a power control signal to the switch control circuit, and the fan circuit module electrically connects to the switch control circuits. In an initial operation state, the nominal power output from the power source can be reduced to a control power sending to the fan circuit module via the switch control circuit to drive at least one fan within the fan circuit module, and then the power control signal controls the control power after the switch control signal delivering unit sends the power control signal to the switch control circuit.
REFERENCES:
patent: 6798162 (2004-09-01), Makaran et al.
patent: 7199542 (2007-04-01), Chen
patent: 7205733 (2007-04-01), Xiong et al.
patent: 7218846 (2007-05-01), Wu et al.
patent: 7221858 (2007-05-01), Ku
patent: 7323836 (2008-01-01), Lin et al.
patent: 7447423 (2008-11-01), Chiu et al.
patent: 2004/0247449 (2004-12-01), Ma et al.
patent: 2005/0040778 (2005-02-01), Lin et al.
patent: 2006/0043950 (2006-03-01), Lin et al.
patent: 2006/0066276 (2006-03-01), Koch et al.
patent: 2006/0076912 (2006-04-01), Yang et al.
patent: 2006/0091837 (2006-05-01), Xiong et al.
patent: 2007/0096669 (2007-05-01), Chang et al.
patent: 2007/0108923 (2007-05-01), Chen
patent: 2007/0120510 (2007-05-01), Wang
patent: 2007/0216345 (2007-09-01), Kanamori
patent: 2007/0224030 (2007-09-01), Chang et al.
patent: 2008/0012429 (2008-01-01), Dung et al.
Chang Sheng-Hsiung
Chen Chi-Chun
Chen Yu-Chin
Asustek Computer Inc.
Birch & Stewart Kolasch & Birch, LLP
Ip Paul
LandOfFree
Fan control system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fan control system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fan control system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4069177