Filed under Application Solutions, Medical/Scientific
Magnetic resonance imaging (MRI) scanners, also known as magnetic resonance tomography (MRT) scanners, provide 3D images of organs and other soft tissues, as well as the interior structure of bones without the need for investigative surgery. Working closely with the technical team at TDK-Lambda, a manufacturer of MRI scanners used the 40W and 60W PXF DC-DC converters within its power system. These fully-isolated devices feature six-sided shielding, which reduces radiated noise to meet EN55022 specifications for conducted and radiated emissions.
www.uk.tdk-lambda.com/pxf
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Filed under Power Supplies Basics
There are two primary functions that an input EMI filter can perform:
1. Minimise conducted emissions to avoid interfering with neighbouring equipment
2. Attenuate incoming electrical noise that could damage the system
Regarding conducted emissions, although most power supplies meet internationally recognised regulations for EMI, noise is additive and if there are multiple power supplies with noise generating loads such as high speed processor boards, it can result in the end equipment exceeding allowable limits.
If the noise is only slightly out of specification, then a (lower cost) single stage filter may suffice. If the noise is considerably out of specification then a higher performance two stage filter will be required.
To find out more, please visit the TDK-Lambda AC-DC Power Supplies FAQs page
If you have a question you’d like to ask TDK-Lambda, please feel free to use the online FAQ form and we’ll get back to you with an answer to your question as soon as possible.
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Filed under Application Solutions, Medical/Scientific
Used for histology, the study of the microscopic structure of tissues, and pathology labs of hospitals and research institutions, tissue processing equipment needs to be robust, reliable and power efficient. To meet these demands, a laboratory equipment manufacturer worked closely with TDK-Lambda to successfully integrate the SWS series AC-DC power supply into its new tissue processing instrument.
www.uk.tdk-lambda.com/sws
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Filed under Application Solutions, Communications
A manufacturer of stereo transmitters, primarily for wireless monitoring applications, is using the ZPSA 60W AC-DC power supply from TDK-Lambda. The selection of this particular PCB-mounted power supply was for its high-quality build and overall performance. Working closely with the customer, the TDK-Lambda technical support team fine-tuned the ZPSA to the exact requirements specified.
www.uk.tdk-lambda.com/zpsa
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Filed under News
A new EMEA Advanced Technology Centre (ATC) has been set up, located at the Bristol and Bath Science Park.
Leading the Advanced Technology Centre 6-strong team is TDK-Lambda’s Chief Technology Officer Andrew Skinner: “The opening of the Advanced Technical Centre is a natural progression for TDK-Lambda and part of our plans is to bring more new leading-edge products to market faster.”
A video about the Bristol & Bath Science Park can be viewed below and includes commentary from Andrew Skinner….
The Bristol and Bath Science Park is equidistant between Bristol and Bath and in close proximity to 12 major universities all with a focus on Science, Technology, Engineering, Mathematics (STEM) subjects. With 412 technology companies within 20 miles radius of the Bristol and Bath Science Park, the area boasts one of the highest concentrations of PhD graduates in the UK.
“By basing our Advanced Technology Centre here, we have access to a wide pool of highly skilled technology professionals,” Skinner concludes. “We will focus on all aspects of power supply development, including algorithms for digital control, new topologies and innovative thermal and mechanical design techniques.”
For more information, please visit the TDK-Lambda website at: (www.uk.tdk-lambda.com).
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Filed under News
TDK-Lambda UK’s Load Sharing Apparatus patent application has been approved for grant by the UK Intellectual Property Office. The technique improves load sharing between a plurality of power supplies in N+1 redundancy applications
“In systems that are required to operate with high reliability, it is often necessary to operate multiple power supplies in parallel,” explains Andy Skinner, Chief Technology Officer at TDK-Lambda EMEA. “Should one power supply fail, a sufficient number of power supplies remain in operation for the system to continue to function – this is known as ‘N+1 redundancy’.”
There are two established techniques used for improving the load sharing accuracy between power supplies connected in parallel. One method is to use a share bus but this is not suitable for high reliability applications because of the failure of the share bus can cause the whole system to fail. Droop sharing is the second technique, where the load regulation of the power supply – ie the variation of output voltage with current – is deliberately made higher; this forces the output voltage to reduce as the power supply is loaded. Unfortunately in many implementations of droop share, the load regulation needed to provide good current sharing is unacceptably high.
The new Load Sharing Apparatus developed by TDK-Lambda overcomes this issue by applying droop over the full load range of each power supply but with a two-stage profile, which is less steep at lighter loads than at heavier loads. “As a result, high sharing accuracy can be achieved at high loads, whilst still allowing for some load sharing at lighter loads,” concludes Skinner. “Thus, by improving the sharing accuracy at high loads, the number of power supplies required to achieve N+1 redundancy is reduced, which in turn reduces both the overall cost and size of the power supply system. In addition, by allowing for load sharing at lighter loads, a reduced spread in Mean Time To Failure (MTTF) of the power supplies is achieved.”
For more information about the full range of TDK-Lambda AC-DC power supplies, please call us directly on +44 (0)1271 856600 or visit the (TDK-Lambda website) at: (www.uk.tdk-lambda.com)
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Filed under News
We have recently introduced an upgraded TDK-Lambda Rapid Selector (uk.tdk-lambda.com/rapidselector).
The most important, recent change with the introduction of the upgraded Rapid Selector is to integrate the dedicated Vega AC-DC power supply configurator program. The Rapid Selector now covers all product ranges.
The Rapid Selector also brings some enhancements relating specifically to the Vega range of configurable power supplies; these include:
1. Quick configure will now offer Vega units if these are appropriate (for both AC input and DC input).
2. View configured product:
- automatically show results for both Vega and NV products
- single-step process (enter the part number, click view)
3. Configure a Vega (previously this was only available on the Vega stand-alone configurator program)
4. Request a quote from the offered results
5. All features available on desktop or mobile devices
6. In addition, series connected ‘C’ modules for NV350 and NV700 are now available from 48V up to 64V.
The TDK-Lambda Rapid Selector can now select from a total of more than 3000 different AC-DC and DC-DC products from over 100 different product ranges. In addition, the configurable/modular products range is offered.
Please remember to update your bookmarks to: uk.tdk-lambda.com/rapidselector
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