Multiple programmable power supplies selected for oncology systems

Personalising radiotherapy cancer treatment delivers better results as the exact required dose can be placed accurately using shaped beams of radiation. Using high definition radiosurgery, liver, lung, brain and spinal conditions can have precise radiotherapy treatments using oncology systems that reduce side effects and limit normal radiation exposure.

TDK-Lambda’s sales team was approached by the design team working on a new oncology system. A number of variable voltages and power levels were required and the Genesys™ programmable power supply series was suggested and chosen for the application. The output voltages ranged from 0-20V up to 0-100V with the capability to deliver 750W to 3300W in 1U and 2U high racks. All Genesys™ power supplies have standardised programming making it easy to control the output voltages and currents through the RS-232/RS-485 interface.

TDK-Lambda offers a wide range of Programmable Power Supplies for industrial, test and measurement applications, click for more information


100W Class I and Class II 2”x 4” medical and industrial power supplies deliver 75W in an 85°C ambient

TDK Corporation (TSE 6762) announces the introduction of the 100W rated TDK-Lambda brand CUS100ME series of medical and industrial AC-DC power supplies. The series delivers 75W in ambient temperatures of up to 85°C with just 1m/s airflow, however, with conduction cooling, it can provide full power at up to 70°C. Target markets include home healthcare, medical, dental, test and measurement, broadcast and industrial equipment.

A choice of seven standard output voltages is offered; other voltage settings are available upon request. The input voltage range is 85 to 264Vac, 47 63Hz with the capability of accepting 47 440Hz. Operating efficiencies are up to 94%, with an average efficiency of > 87% and <0.5W no-load power consumption.

Available in four package types, the power supplies are designed for use in both Class I or Class II (double insulated) installations. The open frame CUS100ME measures 50.8 x 101.6 x 31.5mm (WxLxH), the U chassis 64 x 116 x 38.5mm, or 64 x 116 x 39.7mm with a cover. A 34.2mm high version with a metal baseplate can also be ordered. The U channel and baseplate models facilitate the very high ambient temperature conduction cooling ratings.

Like the 30W, 60W and 150W models in the series, the CUS100ME has an input to output isolation of 4,000Vac (2 x MoPP), an input to ground isolation of 1,500Vac (1 x MoPP) and an output to ground isolation of 1,500Vac (1 x MoPP) for suitability in B and BF rated medical equipment. The leakage current is <250µA and touch current is <100µA. The maximum operating, transportation and storage altitude is 5,000m.

Safety certifications include IEC/EN/ES 60601 1, IEC/EN/UL 60950 1, IEC 61010 1 (designed to meet) with CE marking for the Low Voltage, EMC and RoHS2 Directives. A derivative meeting EN 60335 1 can be supplied upon request. The units also comply with EN 55011 B and EN 55032 B conducted and radiated emissions (Class I and II), and meet the EN 61000 3 2 harmonics, IEC 60601 1 2 Edition 4 and IEC 61000 4 immunity standards.

For more information about the full range of TDK-Lambda CUS100ME series of AC-DC power supplies, please visit the TDK-Lambda website at:

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Class II configurable power supplies used for LED phototherapy skin treatment

Phototherapy, or heliotherapy, is the treatment of skin disorders using light. Systems are now using LEDs and target the skin with precise light wavelengths from red, blue and near-infrared LED sources that control the depth of the skin treatment. Output power is also adjusted to reach the target cells.

Looking for a 24V output Class II (no earth ground connection) medical power supply that had very low audible noise, designers of a new LED phototherapy machine chose TDK-Lambda’s XMS500 configurable medical power supplies. Options selected were the remote on/off and a 12V 1A standby voltage, so that the main 24V output powering the LEDs could be disabled and power still be supplied to keep the system processors operational.

TDK-Lambda offers a wide range of standard and custom Medical & Scientific Power Supplies for healthcare applications – click for more information.


How to simulate a battery’s internal resistance using the GENESYS+™ programmable power supply

Over its full lifetime the battery is not an ideal voltage source. This is due to its internal resistance, caused by its construction, which can rise over time, particularly with a lead-acid type. As the cells age, the size of the metal plates decreases and so the voltage drop increases. In addition to this, the cell separators tend to clog up and the chemical structure of the electrolyte changes.

Simple circuit of a battery’s resistance

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DIN rail power supplies chosen for wind turbine lift systems

Wind turbines are an economic source of renewable energy for countries that have windy climates. Now located both on-shore and off-shore, towers can reach in excess of 200m in height. Although blades can be viewed from the base of the tower, periodic maintenance and close inspection needs to be carried out at the top. Internal lift systems save time and provide safe access to technicians. continue reading »


Rack mount industrial power supplies used in continuous inkjet printers

Continuous ink system printers are used by many print shops to provide their high volume customers with a range of products and services from fliers to catalogues. Inkjet technology is often used, allowing a broad spectrum of colours and image quality. Print speeds of over 250 metres a minute are not uncommon. continue reading »


Low acoustic noise, full MoPPs isolation modular power supplies

The new QM8 series of AC-DC power supplies extends the QM series of 700 to 1500W modular power supplies to include up to 18 outputs. Having both medical and industrial safety certifications, the QM8 addresses a wide range of applications, including BF rated medical equipment, test and measurement, broadcast, communications and renewable energy applications.

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Magnetic Resonance Therapy table benefits from bespoke power supply enclosure

Magnetic Resonance Therapy (MRT) is a relatively new technique being used to treat cartilage, ligaments and tendons to reduce joint pain and reduce pain associated with arthritis. Magnetic fields strengthen and rejuvenate tissue without the need for surgery. As patient preparation is time consuming, wheeled tables are used allowing the machine to treat one patient while another readied.
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External Power Supply Efficiency Standards

External power supplies (EPS) are extremely widely used in households around the world to charge phones or operate tablets, laptops, game consoles and a variety of consumer electronic and electrical items.

Studies on European energy use of these power supplies indicate that reducing off-load power consumption and improving product efficiency will save nearly 10TWh of power each year. A Terawatt hour (TWh) is 1,000,000,000,000 Watts used in an hour. Reducing energy usage saves money, reduces the requirement to add new power generating capacity and cuts environmental pollution.

Two parameters were originally specified to regulate waste energy reduction, the maximum off-load power consumption and the minimum average efficiency level, which when multiplied by a billion products becomes very significant. continue reading »