Power Supply

A series of rugged AC-DC chassis-mount power supply units from XP Power, Sunnyvale, CA, delivers up to 350 W of power. Incorporating built-in fan cooling, screw terminal connections for simple installation, and low EMI emissions, the SMP350 series offers easy integration into end equipment, reducing design and manufacturing costs and time to market. Packaged in a 3.6 × 7 × 1.7-in. enclosure, the series delivers power densities up to 13 W/in.3, enabling a compact, highly efficient and low-noise solution. Versions suitable for use in medical equipment offer reduced earth leakage current of less than 300 A.

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Power Supply

Power Partners, Hudson, MA, has released a 65 W, 2 × 4 in. AC/DC open frame power supply available in single-output models. The PEA65 series delivers maximum 65 W as a Class I power supply with a universal input voltage range of 90–264 VAC and six output voltage selections (12, 15, 19, 24, 36, and 48 V), with measurements in a 2 × 4 × 1.31 in. package and weighs under a half pound (0.44 lb). The series is approved and certified to UL/cUL/TUV 60950-1 and is compliant to Energy Star V2.0 and ErP STEP 2. Additional highlighted features of the series include short circuit, over-voltage, and overload protection, 5000 m altitude operation rating, operating temperature of 0° to +70 °C (derating), 100 percent burn-in/hi-pot testing, and MTBF of >100K hours per MIL-STD-217F.

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Self-Clinching Captive Panel Screws

Self-clinching captive panel screws from Penn-Engineering, Danboro, PA, install permanently into stainless steel enclosures to enable easy access whenever necessary and eliminate risks associated with loose screws. The PEM® PFC4™ captivated screw remains reliably in place where designed in a door or panel and will not loosen, fall out, or damage internal components. The spring-loaded fastener assemblies comply with UL 60950 equipment access standards. They install successfully in stainless sheets as thin as 0.060 in./1.53 mm with hardness up to HRB 88. They are available in assorted screw lengths and in thread sizes #4-40 through #10-32 and M3 through M5.

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Tabletop Enclosures

Designer tabletop electronic enclosures are now available in a new smaller 100 size from OKW, Bridgeville PA. The new size increases the range to four plan sizes. According to the company, the ergonomic EVOTEC is elegant and comfortable to use, but tough enough for challenging working environments. It can also be wall mounted for access control, and it is available in two versions: one with a large flat top for switches, push buttons, and touch displays and the other with a 12° inclined top for desktop applications. The sloping top version can be specified either with or without a recess for a membrane keypad or product label. The new 100 size and the recently launched 150 size are available only with the flat top.

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General-Purpose Digitizers

Spectrum Instrumentation, Grosshansdorf, Germany, has added five new models to its general-purpose M2p.59xx series of PCIe 16-bit digitizer cards. The new versions extend the performance range by increasing the maximum sampling rate from 80 MS/s up to 125 MS/s. The increased sampling rate, together with higher overall bandwidth, enables the new cards to capture a wider range of electronic signals. It makes them ideal for use in applications where signals in the DC to 50 MHz frequency range need to be acquired and analyzed with speed and accuracy. Based on the latest 16-bit analog to digital (ADC) technology, the M2p-596x series includes models that provide 1, 2, 4 or 8 input channels. Multichannel models each have their own ADC and signal conditioning circuitry to allow fully synchronous acquisitions on all the inputs.

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Controlled Room Temperature Indicator

A controlled room temperature (CRT) indicator from Timestrip, Cambridge, UK, provides evidence of temperature breaches in the storage or transport of medical products outside the 15°–25 °C (59°–77 °F) range. Designed for the medical and pharmaceutical sectors, the indicators travel with the products from the manufacturer through to the end user and give a clear visible indication if transport or storage conditions have moved outside the acceptable temperature thresholds. Controlled room temperature (or ambient) shipping and storage is an increasing concern for the healthcare sector as adoption of international Good Distribution Practice (GDP) increases.

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Medical Design Briefs Magazine

This article first appeared in the August, 2018 issue of Medical Design Briefs Magazine.

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