The list identifies 1,000 Private and Alternative Investment Market-listed companies, from farming to IT firms; restaurants and retailers; to construction groups and professional services. The snapshot focuses on companies and partnerships with sales of between £5m and £500m. Many are growing quickly, others are doing so more slowly, often sustained over many years. It means young gazelles sit alongside long-established companies that have found new ways to grow.

The research was compiled with the help of NESTA, the innovation agency, which identified fast growing companies, and business information specialist Dun & Bradstreet (D&B), which verified the information. To read the full article go to Telegraph-1000-Britains-Brightest-Businesses

Tim Worley, CEO of Powerstax comments; “We are proud to have been included in the Daily Telegraph’s list. It’s rewarding to have our investments in UK design and international sales come to the attention of NESTA and the mainstream media. There is no doubt the market is very tough and our success is down to a great deal of hard work, really understanding our customer’s needs and working in close partnership with them to deliver high-efficiency power conversion systems on budget and on time.”

The MEDISTAX^® family of power supplies available in two power ranges, 200-750W and 400-1450W providing a modular and configurable power solution in an extremely compact 1U high (40mm) package with up to 12 isolated outputs in either a 4 or 6 slot chassis. Typical applications for the Powerstax MEDISTAX^® medically approved power supply series include medical imaging equipment, dialysis systems, clinical diagnostic systems and medical lasers.

Employing an innovative plug-and-play architecture the MEDISTAX^® units combine feature-laden front-end Power Units combined with slide-in output converter modules that allows the configuration of a custom power solution in less than 5 minutes. All possible configurations carry full safety agency approvals and are CE marked. Ultra high efficiencies of over 90% significantly reduce system thermal load and an industry leading 15W/in³ power density provides a compact and versatile power solution with less than 300µA leakage current and 4000VAC isolation.

Tim Worley, CEO of Powerstax comments; “These improvements to our already successful MEDISTAX^® range of medical power supplies offer our customers a future-proof power solution. The plug and play power module architecture allows fast custom configurations, facilitates rapid prototyping and simplifies logistics offering many benefits to both designers and buyers.”

Other standard features include standard output voltages over the range 1.5V to 58V, all outputs are fully floating allowing outputs to be configured in series or parallel to provide custom outputs, 5V bias standby voltage, ultra-high efficiency up to 90% reducing system heat dissipation, visual LED indicators and individual output control signals. A universal 85-264VAC input range is standard as is over voltage protection and the full load operating temperature range is from -20 to +70°C.

The updated medical approvals for the Powerstax MEDISTAX^® powers supply includes ANSI/AAMI ES60601-1:2005, Medical electrical equipment– Part 1, General requirements for basic safety and essential performance, CAN/CSA-C22.2 No. 60601-1:08 Medical electrical equipment, Part 1: General requirements for basic safety and essential performance, IEC60601-1:2005 Medical electrical equipment– Part 1: General requirements for basic safety and essential performance

To download the datasheet for the N-03751 Series, please click the datasheet image.
(pdf format 458k)

Powerstax, one of Europe’s leading value-added power solutions manufacturers, announces the availability of a convection cooled option for its N-03751-PFC Series of ultra-compact AC-DC switching power supplies. The N-03751-PFC Series is designed for outdoor and semi-sealed industrial applications and low noise office environments and its low profile will suit 1U rack mounted systems.

The new convection cooled option delivers 260 watts of output power across all output voltages and eliminates the fans and fan controllers required to cool conventional power supplies. The convection cooled option reduces costs and frees-up valuable system real-estate. As the Powerstax N-03751-PFC does not require forced air for full 260W operation, the system designer no longer has to be concerned with channelling air over the PSU, simplifying thermal design. Removing the fans also significantly increases the reliability of the Powerstax N-03751-PFC and reduces audible noise of end products, making them ideal for office environments.

Where an end system may be used in different environments, customers can simplify system level design by specifying the convection cooled Powerstax N-03751-PFC and if required substituting the forced-air cooled version which offers the same very compact, low profile 5×7.7×2.3mm (3.3x5x1.5”), packaging, connectors and layout, saving design time and costs.

“Powerstax power supplies are inherently reliable.” Says Tim Worley, CEO of Powerstax plc. “Since the reliability of a power supply is in many cases degraded by the reliability of its cooling fan, the introduction of this range of compact convection cooled power supplies offers our customers a very real increase in reliability with added packaging and cost benefits. Convection cooled power supplies reduce overall system power consumption and cooling requirements and are not susceptible to failures due to dust clogging fans or airborne contamination of their circuit boards.”

The synchronous rectification technique of the Powerstax N-03751-PFC Series delivers exceptionally high efficiency, up to 93% in some models and all models feature active current sharing allowing up to four power supplies to be operated in parallel for high output power applications. An optional active OR-ing mosfet board is also available for N+1 redundant applications. Both 5V standby and 12V auxiliary outputs can be wired OR-able when the main output is disabled.

The Powerstax N-03751-PFC Series has a very compact footprint of 3.3” x 5.0” (83.8mm x 127.0mm) and low profile of 1.5” (38.1mm) suitable for use in 1U racks, an active PFC input over the range 90–264 VAC, an operating temperature range of –25ºC to +50ºC and meets a full range of international agency requirements, including RoHS, UL, DEMKO, CE Mark and FCC Class B. Output is protected against overvoltage, overpower, short circuit and over temperature.

View complete range at DSEi 13th-16th September, London ExCel Stand N9-349.

Powerstax, one of Europe’s leading application-rich power solutions specialists, announces the availability of its PX range of competitively priced, high reliability MIL standard DC:DC converters and pre-regulator, filter and hold-up modules.

Tim Worley, CEO of Powerstax comments; “Our PX range of power modules offers designers one stop shop for complete board level power solutions.”

The Powerstax PX range of DC:DC converters contains more than 40 products including single, dual and triple output versions with output power up to 30W. All models have an ultra-wide DC input range of 16-40V and output voltages which may be selected as combinations of 5V, ± 12V, ± 15VDC. The converters employ fixed high-frequency (400kHz) switching technology with an on-board input EMC filter and built-in soft start circuit. All modules have output short circuit and overload protection.

The Powerstax PX series pre-regulator module operates up to 50W and can extend a DC-DC converter’s input voltage range while inhibiting supply rail surges and spikes. The pre-regulator offers three operating modes: Normal mode operation occurs between 16V to 40V input voltage when the module is operating in a steady transparency state. Voltage mode is deployed when the bus voltage falls below 16V putting the voltage regulator module into BOOST mode and raising its output voltage to 20V. Should the input voltage drop below 10V the voltage regulator module will safely shut down. And finally surge and spike suppression mode may be used when the input voltage goes above 39V. The pre-regulator module output voltage is then clamped at 38.5VDC and can withstand the maximum 80V/50ms bus voltage surges and up to 600V/20?s spikes.

The Powerstax PX series switching regulator modules provide an extended input voltage range to allow extra low voltage outputs from the output of one of the PX series DC:DC converters. Input voltage range is 4.5 – 32VDC with outputs of 2.5, 3.3 or 5VDC as standard.

Providing a hold time 10?s/?F the Powerstax PX series hold-up module provides an alternative solution to reduce the amount of capacitance needed by charging the hold up
capacitor at high voltage (typical 38VDC) while limiting the input current. This provides enough time to facilitate an orderly system shut-down in the event of a brown-out or complete power failure.

The final modules in the PX series are two EMC filter modules which meet the requirements of MIL-STD-461D, CE102 levels of conducted power line noise.

All PX series modules have an operating temperature range from -55 to +105 ºC, employ proven SMT technology offering high reliability, low noise and high power density

Typical applications for the Powerstax PX series include Mil and aviation systems and high reliability industrial applications. Powerstax provides standard and custom power solutions for defence, homeland security, shipboard and ground systems and mobile/vehicle mounted wireless and radar systems, telecomm infrastructure and security systems.

Powerstax, the leading application-rich power solutions specialists, announces the appointment of a new Director of Sales, EMEA. Rob Hill is returning to the UK from the USA, where for the last six years he has held a number of senior posts in the power industry, to take up this new role.

Tim Worley, CEO of Powerstax, comments; ”Powerstax has continued to grow its export business throughout the global downturn and we are making this strategic appointment to ensure that we find new opportunities in EMEA, while continuing to support our existing customers and sales channels. Our success in the USA is due to our philosophy of becoming an extension to our customer’s design process and offering a full and fast response in every area of our business. As our business continues to grow Rob will ensure EMEA customers have a senior voice within our company”

In his last three career moves Hill has been at senior management or director level and has overseen product marketing, product and business development, global marketing communications, strategic and major OEM sales, sales management and distribution channel management. He has first-hand experience of the rapidly changing high technology environments of North America, Asia, and Europe. Before leaving for the USA Hill held various positions with power conversion, networking and data acquisition companies and holds a BEng. in Electronic Engineering (BSEE).

Worley continues; “We have been looking for the right person for this senior role in Powerstax for some time and Rob brings a great deal of relevant experience with him from which both Powerstax and our customers will benefit”.

Powerstax provides standard and custom power solutions for industrial, defence, homeland security, shipboard and ground systems and mobile/vehicle mounted wireless and radar systems, telecomm infrastructure and security systems.

“The essence of SWAP” claims Tim Worley, CEO of Powerstax plc “is to minimise the size and weight of power conversion solutions while meeting the demand for ever higher power. Very high efficiency, meeting the twin EMC challenges of low emissions and high immunity coupled with high reliability in harsh environments, all add to the challenge.”

Vehicle based electronic systems may be required to run from nominal battery supplies of 12VDC or 24VDC and to comply with the MIL-STD-1275 28VDC electrical systems in military vehicles standard. Meeting all of these input voltages in one product is ideal, with high power up-conversion to 28VDC or 48VDC for end equipment operation. This can create the twin challenges of maintaining high efficiency and low heat dissipation. The move to a 600VDC vehicle supply to reduce power distribution losses will create another opportunity for innovative power conversion, albeit moving to a hazardous high voltage.

Power system design criteria for MIL COTS applications, especially those which may be vehicle mounted, include varying degrees of sealing for environmental protection, which offers challenges to removing heat generated inside the enclosure. Some systems do not allow integral fan cooling as this can affect sealing and introduce reliability issues created by the fans themselves. In these cases, heat removal solutions include high efficiency customised heat-sinking, cold wall cooling by mechanical contact with external surfaces and in extreme cases water cooling. Compliance with MIL-STD-810 environmental specification and MIL-STD-461 EMC requirements place further demands on system design.

Worley continues; ”The MIL COTS market is strategically very important to Powerstax and our F501 high efficiency DC:DC Converter brick is central to our power solutions. Our field proven patented design allows us to perform both step-up and step-down power conversion using the same highly efficient product. It offers a very wide range of input voltages between 11VDC and 75VDC making it ideal for vehicle based operation in both military and the growing non-tactical vehicle market. Optimisation of the main converter can reap significant efficiency benefits, we designed our own brick and we know exactly how to get the best out of it.”

Powerstax has recently launched the TVS1001 ruggedised 1000 watt DC-DC power supply. At the heart of the TVS1001 are two of the patented Powerstax F501 DC-DC converters which have demonstrated ability to perform under the harshest of conditions with field proven use in military applications. It is one of the few units of its kind that offers step-up conversion at consistently high efficiency.

The Powerstax TVS1001 has a wide range DC input voltage, from 11 to 36 volts, with a range of outputs at 24, 28 36 or 48 VDC making it ideal for vehicle mounted Military and Non-Tactical, fixed and mobile communications and security systems. The unit can be also be customised to meet special requirements.

Typical applications for Powerstax MIL COTS power solutions include defence, homeland security, avionics, shipboard and ground systems and mobile/vehicle mounted equipment.

Powerstax also supply an extensive range of standard and custom AC & DC power solutions for centralised and distributed power (DPA) in a broad range of applications including hot swap front end AC-DC bulk power, DC-DC converter bricks and programmable, modular rack mounted Power Supplies, for use in Telecoms, Datacoms, IT, Industrial, Test & Control, Transportation, Medical and all commercial markets. For more information contact sales@powerstaxplc.com or visit www.powerstaxplc.com

Powerstax, one of Europe’s leading application-rich power solutions specialists, will be displaying their growing range of standard and custom COTs power solutions for MIL and non-tactical applications at this year’s DSEi exhibition.

To be seen for the first time in Europe will be the TVR3001, a 3000W DC-DC power conversion rack that has been developed specifically for harsh environmental conditions. In a highly efficient configuration, each of the three individual modules within the rack contain two of Powerstax’s versatile F501 full brick DC-DC converters, coupled with a two phase boost converter to provide a standalone power solution. The Powerstax TVR3001 is ideal for use in vehicle or remote applications and the system is designed to protect the internal electronics from the ingress of dust.

Other significant developments in vehicle based power systems for communications systems include the Powerstax TVS1001 ruggedised 1000 watt DC-DC power supply which has demonstrated ability to perform under the harshest of conditions with field proven use in military applications. It is one of the few units of its kind that offers step-up or step-down conversion at consistently high efficiency. The electronic circuits are sealed to withstand exposure to the harshest of environments and are cooled with a mechanically isolated field replaceable fan unit. The unit is highly efficient offering a choice of fan speeds dependent on the operating environment. The Powerstax TVS1001 has a wide range DC input voltage, from 11 to 36 volts, making it ideal for vehicle mounted Military and Non-Tactical, fixed and mobile communications and security systems. The unit can be configured over a range of standard output voltages or customised to meet special requirements.

Also on display will be the Powerstax N series of ultra-compact ac-dc, high efficiency open frame power supplies. The 1U high, compact package makes this power supply ideal for applications using industry standard 1U chassis. Output power is from 125 to 375W and all models offer a single main output plus a standby supply. The series includes I2C communication for added functionality and monitoring and N+1 redundancy operation.

Completing the Powerstax product line up for DSEi 2011 will be a wide range of board mounted DC:DC converters offering single, dual and triple outputs from 5 to 500W, pre-regulator modules, switching regulators, hold-up modules and EMC filters.

The Powerstax design and engineering team will design, develop and supply value-added and custom power solutions to meet customer’s needs. Tim Worley, CEO of Powerstax comments;”Our engineers possess a wealth of expertise and experience in the research, development and manufacture of both AC and DC power solutions. We aim to operate as an extension to our customer’s own design team to produce the fastest, most elegant and cost effective power solution.”

Typical applications for Powerstax MIL COTS power solutions include defence, homeland security, avionics, shipboard and ground systems and mobile/vehicle mounted wireless and radar systems, telecomm infrastructure and security systems.

Hay dos convertidores dc/dc patentados tipo F501 in el corazón de la serie TVS1001, con demostradas prestaciones bajo las condiciones mas adversas, en el campo, en aplicaciones militares. Es una de las pocas unidades que ofrecen conversión reductor y aumentador de voltaje al mismo tiempo, con elevado rendimiento.

La circuitería electrónica esta herméticamente sellada para soportar los entornos de polvo mas duros y están ventilados con un ventilador mecánicamente aislado con capacidad de reemplazo en el campo. Esta unidad es altamente eficiente, permite la selección de la velocidad del ventilador dependiendo del entorno de funcionamiento.

La unidad TVS1001 de Powerstax dispone de un amplio rango de entrada DC, desde 11 hasta 36 voltios, ideal para aplicaciones en equipos de comunicaciones montados sobre vehiculos militares, tanto de tipo móvil o no, así como equipos de seguridad. La unidad puede configurarse para disponer de una serie de tensiones de salida estandar asi como otras tensiones especiales.

Aplicaciones típicas para las soluciones COTS de alimentación de Powerstax incluyen equipos de defensa, fuerzas de seguridad, aviónica, equipos navales y vehículos militares.

Powerstax diseña y produce sistemas de alimentación AC/DC y DC/DC de gran densidad de potencia y alto rendimiento. Son productos concebidos para mercados como la Defensa, Aviónica, Industrial, Medicina, Transmisión de Datos, Telecomunicaciones, Sistemas de Información, Sistemas de Prueba y Control, y Transporte.

Otras caracteristicas de la R1801 son entrada universal de 85-264VAC, salidas estandar de 48VDC, 54,4VDC ó 56,2VDC. La serie R1801 está protegida contra Sobretensiones, sobrecargas y sobretemperaturas. La misma tiene señalizacion de power fail y alrama de fallo. Dispone de ON/OFF remoto como caracteristica estandar y tiene correccion del factor de potencia PFC según normativa EN61000-3-2. Cumple Norma RoHS y tiene marcaje CE.

La serie R1801 utiliza tres convertidores tipo A060 homologados UL propiedad de Powerstax utilizados para suministrar 1800W a la carga, o bien para suministrar 1200W en un monatje redundante N+1. La entrada de red viene proporcionada mediante tres conectores IEC estandar mientras que la salida DC se conecta a traves de la parte posterior de la fuente mediante tornillos.

Según comentario del Sr. Tim Worley, Director Gerente de Powerstax plc, “Estamos comprometidos a suministrar soluciones de alimentacion de alto rendimiento y gran desnidad de potencia para satisfacer las necesidades de nuestros clientes. La serie R1801 representa una solucion elegante y economica para alimentar equipos de telecomunicaciones y sistemas de informacion, complementaria a nuestras ya exitosas series R2250 y R2400”.

Powerstax diseña y produce sistemas de alimentacion AC/DC y DC/DC de gran densidad de potencia y alto rendimiento. Son productos concebidos para mercados como la Defensa, Avionica, Industrial, Medicina, Transmision de Datos, Telecomunicaciones, Sistemas de Informacion, Sitemas de Prueba y Control, y Transporte.

Das Herzstück des TVS1001 sind zwei patentierte Powerstax F501 DC/DC-Wandler, die sich in militärischen Anwendungen in der Praxis unter härtesten Bedingungen bewährt haben. Es ist eines der wenigen Geräte, die Aufwärts- und Abwärtswandlung mit gleichmäßig hoher Effizienz bieten. Die elektronischen Schaltungen sind versiegelt, um der Einwirkung der rauesten Sandbedingungen standzuhalten, und sie werden mit einem mechanisch isolierten, vor Ort austauschbaren Ventilator gekühlt. Das Gerät ist hocheffizient und bietet verschiedene Auswahlmöglichkeiten für die Ventilatorgeschwindigkeit je nach Betriebsumgebung.

Das Powerstax TVS1001 verfügt über einen DC-Weitbereichs-Spannungseingang (11 bis 36 Volt). Dadurch ist es ideal geeignet für in Fahrzeuge eingebaute, militärische und nicht taktische Festnetz- und Mobilkommunikationssysteme und Sicherheitssysteme. Das Gerät kann über einen Bereich von Standardausgangsspannungen konfiguriert oder an spezielle Anforderungen angepasst werden.

Zu den typischen Anwendungen für Powerstax MIL COTS Stromversorgungslösungen gehören Verteidigung, innere Sicherheit, Luftfahrtelektronik, Schiffs- und Bodensysteme sowie mobile/in Fahrzeuge eingebaute Geräte.

Powerstax verfügt außerdem über ein umfangreiches Sortiment von standardmäßigen und kundenspezifischen AC- und DC-Lösungen für zentrale und verteilte Stromversorgung (DPA, Distributed Power Architecture) für ein breites Anwendungsspektrum, einschließlich Hot-Swap-Front-End-AC/DC-Netzteile für hohe Stromleistungen, DC/DC-Wandler im Brick-Format sowie programmierbare, modulare, an Gestellen montierte Stromversorgungseinheiten für die Bereiche Telekommunikation, Datenkommunikation, IT, Industrie, Prüfung und Kontrolle, Transport, Medizin und alle kommerziellen Märkte. Weitere Informationen erhalten Sie unter sales@powerstaxplc.com oder auf unserer Website unter www.powerstaxplc.com.