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A Brief History of Modern Digital Shaker Controllers

Over a period of 40 years, four generations of digital vibration exciter control systems have been developed by various companies in the USA. They are categorized as standalone, PC-based, PC-tethered, and fully networked. This paper discusses the evolution and improvement of shaker controllers and the critical parameters that users should consider during the acquisition process.

Posted in: White Papers, Test & Measurement

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Full-Wave Matching Circuit Optimization Shortens Design Iterations

Full-wave matching circuit optimization (FW-MCO) is a new technology introduced by Remcom, which combines full wave 3D EM simulation and circuit optimization to solve an age-old RF problem:determining which component values provide the desired match for a given matching network layout.

Posted in: White Papers, Communications, Electronics, Electronics & Computers, Electronics & Computers, Software

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How To Make Pressure Switches That Last

Simple design principles for harsh operating conditions Fluid control systems for many aerospace, industrial and heavy equipment applications require accurate, reliable pressure switching under harsh operating conditions. In these applications, the wrong pressure switch can cause catastrophic damage or even endanger human life.

Posted in: White Papers, Mechanical Components, Fluid Handling, Motion Control

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Controlling the EMI Effects of Avionic Equipment

Devices that can cause interference in aircraft include laptops, tablets, and cell phones, and all have been suspected of causing events such as autopilot disconnects, erratic flight deck indications, and airplanes turning off course. Board level shielding has never been more important in maintaining the functionality and safety of avionic equipment.

Posted in: White Papers, White Papers, Aerospace, Mechanical Components

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Force Transfer Machines

There has been ongoing debate as to whether or not a hydraulic force machine that applies the force simultaneously to both the reference standard and the unit under test is more repeatable and reproducible when the force is applied and transferred with 3 bars versus 2 bars. The debate centers around alignment of the reference standard and the unit under test. There is no disagreement about the benefits of using a triangular configuration when using multiple load cells to weigh an object; however, there is a debate over any advantages that might be offered by using a 3 bar Universal Calibrating Machine (UCM) instead of a traditional 2 bar system. This paper provides test results for repeatability and reproducibility for a 2 bar UCM and a 3 bar UCM, showing the null hypothesis to be correct and proving that there is not a difference between either type of UCM.

Posted in: White Papers, Instrumentation, Mechanical Components, Test & Measurement

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Driving Auto Performance Through Lubricant Selection

Underhood temperatures are gradually rising as aerodynamics dictate tighter packaging and large engines are being replaced by smaller turbocharged and supercharged engines for improved fuel efficiency. With ambient temperatures under the hood exceeding 120 °C (248 °F), finding a lubricant that can withstand the high temperatures for an extended period of time is key.

Posted in: White Papers, Automotive, Government, Coatings & Adhesives, Mechanical Components, Motion Control

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Stencil-less Jet Printing for PCB Assembly

Imagineering, Inc. introduces stencil-less Jet Printing to facilitate quick turn around Printed Circuit Board Assembly.

Posted in: White Papers, Electronics, Electronics & Computers

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