Microsoft Technology Licensing, LLC

J David Egner

Roy J Askeland

Chee Kiong Fong

Suet Fong Tin

Vinicio Manfrini

Daniel Ralph Neal

Harjit Singh

Gary Alan Tornquist

Michael Hiett

Mike Hiett

An external AC power adapter defines a power conversion chamber that retains power conversion circuitry operable to convert an input power to an output power. The power adapter further include an intake chamber and an outlet chamber, both having an aperture that places the respective chamber in fluid communication with the power conversion chamber. Each chamber may have at least one vent to the ambient environment such that an air mover is operable to circulate ambient air through the power conversion chamber. Each chamber may include a guard that deters liquid that has entered the respective chamber from flowing into the associated aperture.

Splash resistant power adapter

An external AC power adapter. The adapter includes a housing which, in one embodiment, defines an air inlet compartment, an air outlet compartment and a partially sealed electronics compartment containing electrical components for converting an AC input to a DC output. A blower generates an airflow within the electronics compartment for cooling the electrical components in the electronics compartment. Barriers are located in the air inlet compartment and the air outlet compartment to prevent liquid from entering the electronics compartment.

Liquid resistant A/C adaptor

An external AC power adaptor having an additional compartment for cooling. The adaptor has a housing that defines a first compartment having power circuitry for converting an AC input to a DC output and a second compartment that has an opening formed in the adaptor housing. A heat transfer plate is disposed between the first and second compartments.

Two-compartment AC adaptor

An appliance leakage current interrupter (ALCI) includes components for preventing sustained over-voltage and sustained over-current conditions. A current interruption threshold is inversely proportional to voltage supplied to the appliance. A microprocessor measures the voltage level of the incoming AC mains supply. The microprocessor is coupled to a sub-circuit for intentionally inducing a current mismatch between the two power lines monitored by the ALCI. Upon detecting an over-voltage of sufficient magnitude and duration, the microprocessor induces a current mismatch in the power lines, thereby causing the ALCI to interrupt power. A second current sensing transformer monitors one of the power lines. The microprocessor also receives the output of the second current sensing transformer. Upon detecting a current level exceeding a variable threshold, the microprocessor induces a current mismatch in the power lines and causes the ALCI to interrupt power.

Leakage current interrupter with sustained overvoltage and/or overcurrent protection

Portion of a connector plug

Portions of a connector plug and receptacle pair

A computing device includes a housing with various electrical and/or mechanical components included therein. Disposed within the housing is a processor assembly that includes a fan. The fan is configured to draw air into the interior of the housing and force air heated by the internal components of the computing device from the interior of the housing. The fan has a diameter that is larger than the smallest dimension of the three orthogonal dimensions of the housing of the computing device and generates low levels of acoustic noise having a low frequency. Additionally, the processor assembly includes a support structure that supports the fan and reduces the effects of electromagnetic emissions generated by a processor of the processor assembly upon electrical devices adjacent to the computing device.

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Sammamish, WA, United States of America

J David Egner