Modular and Configurable Solutions for Vetronics Applications meet MIL-STD-461G

Posted on 12 Apr 2018

Modular and Configurable Solutions for Vetronics Applications meet MIL-STD-461G

This blog discusses XP Power's modular and configurable solutions for compliance with MIL-STD-461 for Vetronics applications and how this relates to the Ground Army requirements within that standard.

The US Department of Defense Standard MIL-STD-461 is an EMI standard for the control of emissions and susceptibility characteristics of electronic equipment. The current revision of the standard MIL-STD-461G superseded MIL-STD-461F on 11th December 2015.


AC Input Current & Harmonics

Posted on 29 Mar 2018
As a result of the peak rectification techniques used in power supplies, harmonic currents are generated. To limit these harmonics, legislation has been introduced. The relevant standard is EN61000-3-2 for equipment with an input current ≤16 A per phase.

Power Systems for Patient Connected Equipment

Posted on 15 Feb 2018
This blog discusses two approaches for power systems within medical equipment for patient connected applications. The part of the equipment which comes into contact with the patient is known as the applied part. The applied part is defined as the part of a medical device which, in order for the medical device to perform its function, deliberately comes into direct contact with a patient. This also applies to parts which are likely to come into contact with the patient.

Power supply applications with output voltages exceeding 60VDC

Posted on 18 Dec 2017
Most commercially available power supplies have output voltages ranging from 3V3 to 54VDC.  However, there are many end applications for power supplies where a higher output voltage is required. Given the lack of availability of standard higher output voltage supplies, it is not unusual for the required system voltage to be generated from multiple standard units in series or by connecting the outputs of a multiple output supply in series.

Low profile full brick baseplate cooled AC-DC power supplies require no external components

Posted on 23 Nov 2017
XP Power’s ASB110 series provides a complete baseplate-cooled AC-DC power supply module that requires no external components in an industry standard full brick, low profile package. Aimed at ITE and industrial customers looking for a baseplate-cooled power supply solution, the ASB110 provides 110W of DC output power from a universal (85 – 264VAC) AC input. 

Reliability Terminology

Posted on 24 Oct 2017
Failure rate is defined as the percentage of units failing per unit time. This varies throughout the
life of the equipment and if λ is plotted against time, a characteristic bathtub curve is
obtained for most electronic equipment.

Energy efficiency for external power supplies (EPS)

Posted on 03 Oct 2017
Controlling the power consumed by external power supplies, whether when they are supplying power or when disconnected from the load, is important for continuity of the energy supply and reduction of environmental impacts. Legislation and targets are set for external power supplies because of proliferation, lack of on/off control and because they are commonly left plugged into the mains supply when not in use.

MIL-STD-1275 Compliance for power systems made easy.

Posted on 07 Sep 2017

The US Department of Defense Standard MIL-STD 1275 is an immunity standard that defines a series of test conditions to be applied to the input of a 28V electrical power system within a military vehicle.  These include spikes, surges, operating voltages and ripple


Miniature PCB Mount 5 W AC-DC power supply meets international medical safety standards

Posted on 26 Jul 2017
The EME05 series of ultra-compact, single output, 5 Watt AC-DC power supplies are believed to be one of the smallest 5 Watt AC-DC supplies, with full international medical safety approvals, on the market. It is available, as standard, in either an encapsulated or open frame mechanical format and measures just 35.6 x 23.7 x 17.6 mm in its open frame format, requiring the minimum of space in the end application.

Supplying an AC/DC Power Supply from a DC source

Posted on 11 Jul 2017
A frequently asked question concerns the suitability of using an AC/DC power supply with a DC source. There are two parts to the answer, one concerning the ability of the converter to run without issue and the other concerning the safety aspects.
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