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Motor Control Reference Platform

The R8C/25-based motor control reference platform from Renesas Technology (San Jose, CA) accelerates the design of brushless DC motor applications. The platform allows engineers to quickly bring the latest motor control technology to appliances, powertools, fans, pumps, and other products, while providing the performance, reliability and power efficiency needed in these systems.

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Brushless DC Pump

Thomas Products Div. (Sheboygan, WI) has introduced a brushless DC WOB-L(R) air compressor and vacuum pump for medical and other applications requiring a small-size and lightweight pump with variable output. The 250 Series pump measures 4.25 x 4.54 x 3.02 in. and weighs only 1.9 lbs.

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High-Temp Bearing Materials

Metallized Carbon Corp. (Ossining, NY) has unveiled the Metcar Grade 2500 and Metcar Grade 9800 from its Resistox (TM) family of high temperature mechanical grades. Treated with a specially formulated oxidation inhibitor, these bearings and thrust washers offer greatly increased oxidation resistance without sacrificing their self-lubricating properties, extending life.

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Linear Actuators

Haydon Switch & Instrument (Waterbury, CT) now offers its size 14 hybrid linear actuators with an integrated connector. Offered alone or with a harness assembly, this connector is RoHS compliant and features a positive latch in order for high connection integrity. The connector is rated up to 3 amps, and the mating connector will handle wire gauges from 22 to 28. The actuator is ideal for those that want to plug directly into pre-existing harnesses.

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Precision Tensioning Brake

Placid Industries’ Hystereis brakes features the company’s patented Cog-Buster to automatically smooth braking torque. Frictionless torque is produced by internal magnetic fields rather than contact between parts. Slip torque is smooth, accurate, and reliable, with long term stability and wide speed range. Even high slip RPM causes no wear. Torque is smooth even near zero RPM. Units from 0 to 11 oz.-in. to 0 to 250 oz.-in. rated torque, with heat dissipation to 110 watts are available from stock.

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Clutch/brake Module

Warner Electric’s Gen 2 electromagnetic clutch/brake modules feature several enhancements in performance and appearance, compared to the original C-Face design.

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Thermographic Imaging Selecting an IR Camera with the Right Detector

The thermographic imaging characteristics of an IR camera are largely determined by its detector assembly. Infrared radiation (IR) is focused onto the camera’s detector assembly, which is a focal plane array (FPA) that converts IR into a visual image depicting temperature variations across the camera’s field of view (FOV). The FPA consists of thousands of pixels, which could be fabricated from any one of the IR sensitive materials commonly used in these cameras. Most detector materials respond to a selected portion of the IR spectrum (Figure 1). Therefore, a camera selected for any given application should have the appropriate FPA material based on the IR characteristics of objects within the FOV and the user’s study objectives.

Posted in: Articles, Features, ptb catchall, Photonics

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