Wiener GmbH & Co. KG

WIENER Plein & Baus GmbH is one of the world leading companies with a long tradition in design and production of state of the art electronic chassis / mainframes and power supplies for the scientific research community as well as for demanding industry applications! For more than 50 years W-IE-NE-R has followed its tradition of developing new technologies in advanced electronics for the benefit of science and industry.

From the beginning W-IE-NE-R worked closely with nuclear physics laboratories. As a result development and production of NIM crates and electronics started in the 1980's.  CAMAC modules and crates came in addition, followed by FASTBUS, VME and VXI, VME64x, VIPA and today's high-speed switched fabric technologies. Furthermore, W-IE-NE-R began to specialize in custom high quality multi-channel power supplies for medium and high power applications.

W-IE-NE-R crates and power supplies are known to provide the highest possible power output combined with lowest noise and are built with highest quality. Featuring modular construction and incorporating a unique level of local and remote diagnostic and control tools, W-IE-NE-R products are state of the art and often are used as design reference.  All our products meet the requirements of the leading research centers around the world.  We produce in accordance with ISO-Quality standards and CE rules.

The CERN LHC activities led to the development of new radiation hard and magnetic field tolerant power supplies and special VME- and other crates. Since 2006 W-IE-NE-R shipped about 2000 VME crates and power supplies, standard and radiation-hard versions, for the CERN LHC experiments.

After 1992 the company operated as "W-IE-NE-R, Plein & Baus GmbH" under the ownership of Manfred Plein and Jürgen Baus and became an internationally distinguished supplier for electronic instrumentation for Particle Physics and related science with a worldwide operating sales and service network.

The USA sales and support center "W-IE-NE-R, Plein & Baus, Corp." was established 1997 in Ohio in order to service the North American market.

In 2008 the W-IE-NE-R companies became subsidiaries of the Phoenix Mecano AG, a Swiss based global player in the components, packaging and electronics market. Phoenix Mecano components and enclosures are found in German high speed trains as well as in Airbus airplanes. They are used in the automotive industry, the home and hospital care sector and in all areas of the machine and electronics industry.

Future synergies with our sister company Hartmann Elektronik, a specialist for bus backplanes, as well as with other companies of the Phoenix Mecano group will benefit development and production of new technologies. In this path W-IE-NE-R will continue to serve the scientific research community and industry customers with excellent, high quality and state-of-the-art electronic instrumentation, chassis and power supplies.

We invite you to browse our web site and catalog and look at our products. Please contact us or one of our representatives in Europe or Overseas if you are interested in our products.


CAEN - Costruzioni Apparecchiature Elettroniche Nucleari S.p.A. - is recognized as one of the most important industrial players in the Nuclear Physics research market. 
Since its establishment in 1979, CAEN operates in a highly specialized international market: the design, the production and the supply of electronic instrumentation for radiation and low light sensors. 
CAEN products are used in the most prestigious laboratories, universities and research centers of the world. 


The company operative field is focused on two main areas: nuclear physic research (both high and medium-low energies) and its fall-out applications. 

Advantage is the ability to be the meeting point between the innovative technological requirements and the industrial reliability.

is also able to provide custom solutions, excellent pre- and post-sales support, flexibility and capability of facing new markets and new products.


Power Supply
Modular Pulse Processing Electronics
Powered Crates
Spectroscopy Solutions
Signal Generator

EU Projects:

MODES_SNM - MOdular DEtection System for Special Nuclear Materials

FTK - Fast Tracker for hadron collider Experiments

TAWARA_RTM - TAp WAter RAdioactivity Real Time Monitor

C-BORD - Effective Container inspection at BORDer control points

CAEN has defined its own QUALITY POLICY. It includes the objectives and commitments that the Company has established and that aims to maintain, respecting the needs and the customer expectations. This policy is shared on all company levels.

iseg Spezialelektronik GmbH

ISEG is a german producer of high voltage power supplies for all fields of industry and research.


By using modern, patented resonant converter technology iseg delivers efficient and high precise power supplies in small form factors and excellent electrical parameters.


ISEG provides ready-to-use high voltage power supplies. An overview of our product range:

DC/DC converters as print, built-in or 19“ cassette versions with power up to 150 W
AC/DC power supplies as desktop or 19“ rack version with power up to 10 kW
integrated HV supplies for photomultiplier tubes (PMT)
HV systems in different standards: 19“6U/3U, VME and NIM

In addition to our standard product range we produce a substantial range of customer-specific equipment. In many cases it will be possible to generate an individual solution based on existing product lines in a time and cost-efficient manner. Moreover, our experienced team consisting of physicists, hardware and software developers, electronic engineers and skilled workers is accepting the challenge of complicated assignments.

If you are unable to find a solution for your requirements in this catalog please do not hesitate to contact us or one of our sales representatives.


Control and monitoring capabilities are crucial factors for optimal integration of the high voltage power supply into laboratory and productive systems. Therefore different hardware and software solutions are available on different platforms.

iCS: plug and work: integrated Ethernet / Wifi server with web browser access, SOAP- / Websocket-interface, hardware configuration, firmware updating etc.
free control and configuration tools
numerous libraries and code samples for ready-to-start implementation of your application


All iseg products and solutions were developed and made in Germany. High self-defined standards are our daily base for quality assurance measures in development, production and management.

Struck Innovative Systeme

Struck Innovative Systeme GmbH (SIS) is a small business that started operation in 1998. Our offices are located in Hamburg, Germanies 2nd biggest city. SIS core activity is the development, production and marketing of data acquisition board level electronics. Our quality inspection systems for rolling mills and canning can be regarded as a combination of spin off and system integration.  

We offer the development of custom designed electronics. On one hand our experienced senior engineers have many years of experience with standard and non standard boards, on the other hand we are comitted to the word innovative in our company name and use leading edge technology where appropriate and desired by the customer.