VACUUMSCHMELZE Announces CMC Quick Selector and Design Software for CMC

Hanau / Frankfurt - Hanau-based VACUUMSCHMELZE GmbH announces
the immediate launch of two new programs simplifying selection of the
correct CMC (Common Mode Choke). CMC Quick-Selector helps users to
find a choke that matches their defined electrical parameters, while
VACUUMSCHMELZE's design software calculates a CMC with nanocrystalline
core (VITROPERMTM) that matches the desired electrical properties.

CMC Quick-Selctor
CMC Quick-Selector is a database listing existing standard types of single-phase
and three-phase CMCs. Both standard and special types can be shown. Quick-
Selector's search algorithm selects the correct choke type by applying one or
more predefined electrical parameters, such as load current, number of windings,
inductance, impedance, temperature, unbalanced power or design.

Design Software CMC
The program is used for CMC dimensioning. Users can define an array of parameters
such as core type, number of windings, wire diameter, load current and
ambient temperature.

Results are shown as a spreadsheet with all parameters entered and calculated.
Users are given details of impedance, copper resistance, inductance and allowed
unbalanced power as well as information on the anticipated operating temperature
and on any necessary forced cooling, estimated values for winding capacitance
and stray inductance and details of the weight and dimensions of the

The software also supplies diagrams of the characteristics of impedance Z, insertion
loss aE, inductance L and allowed unbalanced power depending on frequency.

The CMC design software applies physical models that consider eddy currents
and gyromagnetic effects in the core, winding capacitance and stray inductance
and thermal conditions.

Available shortly for downloading at

VACUUMSCHMELZE (VAC), based in Hanau, designs, produces and markets advanced
magnetic materials and related products. In 1914, the first vacuum furnace laid the
foundation for today's VACUUMSCHMELZE. Industrial vacuum melting techniques for
alloys have been in operation since 1923. VAC today has over 3,000 employees in over
40 countries and annual sales of around 270 million euros, and is the holder of over 600 patents. The company is among the world's most highly innovative developers of
advanced industrial materials.

VAC's range of products comprises a broad array of advanced semi-finished products,
components, parts, modules and systems for use in a wide variety of fields and industries spanning watch-making and medical technology, regenerative energies, shipbuilding and telecommunications, and the automotive and aviation industries. VAC's custom solutions are developed in close collaboration with the customer, reflecting the company's expertise in materials and state-of-the-art production technology.
Find out more at

Press Contact:
Patrick Trost
Tel. +49 (0)6181 / 38-0
Fax +49 (0)6181 / 38-2645

Cornelia Krannich/Stefan Ehgartner
markenzeichen GmbH
Goethestrae 66
D-80336 München
Tel. +49 (0)89 / 444 46 74 44
Fax +49 (0)89 / 444 46 74 79

Kontaktadresse für Leseranfragen:
Postfach/P.O.B. 22 53
D-63412 Hanau
Tel. +49 (0)6181 / 38-0
Fax +49 (0)6181 / 38-2645

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