Electricity: motor control systems inventions 05/09

20090136220 - Method of transition between controls for a ventilation system: A method of constant airflow control for a ventilation system is disclosed. The method includes various controls to accomplish a substantially constant airflow rate over a significant change of the static pressure in a ventilation duct. One control is a constant I·RPM control, which is primarily used in a low... Agent: Knobbe Martens Olson & Bear LLP

20090129760 - Method and device for controlling a heat-dissipating fan for an electronic component: A method for controlling a heat-dissipating fan for an electronic component includes the steps of: detecting a temperature of the electronic component, and outputting a first control signal corresponding to the temperature thus detected; receiving a load current of the electronic component, and converting the load current into a second... Agent: The Webb Law Firm, P.C.

20090129761 - Actuator for automotive climatization units: The present patent application refers to an actuator for automotive climatization units, of the type designed to be driven by an electric control unit with direct current and low voltage, characterised in that it is provided with an electric motor able to operate at a lower voltage than the voltage... Agent: Hodes Pessin & Katz Department Of Intellectual Property

20090116823 - Fan speed control device: A fan speed control device includes a management selection module, a first and a second buffers, a resistor, a transistor, and a switch. Depending upon whether a motherboard supports a system of a baseboard management control or not, the fan speed control device selectively uses an indicative signal of a... Agent: J C Patents, Inc.