Pemstar, Inc.

James A Melville

Mark E Troutman

Richard Sands

Loren L Swanson

Donald L Wanek

James M Rigotti

Donald John Wanek

Peter M Herman

Robert A Rink

One aspect of the present invention is a system of fabricating a barrier wall between the testing and tester volumes of an environmental test chamber. This aspect may use a plurality of pallets adapted to receive a device under test and a testing apparatus, a framework adapted to receive a plurality of pallets, and a plurality of insulation bricks associated with the plurality of pallets. The insulation bricks may be adapted such that they can cooperate to form an insulating barrier between the device under test and the testing apparatus.

Environmental test chamber and a carrier for use therein

Environmental test chamber

The present invention provides a cost-effective method and apparatus for controlling engine speed. One embodiment generally comprises a controller and a linear actuator. The controller generates a plurality of voltage pulses having a duration and frequency related to a difference between a desired engine speed and an actual engine speed. The linear actuator converts the plurality of voltage pulses into a throttle position.

Magnetic linear actuator for controlling engine speed

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Mantorville, MN, United States of America

James A Melville