185 x 0. There are two
types of drum core inductors , unshielded and shielded. Some drum core inductors, especially
the unshielded drums with the large air gap, have significantly higher
saturation current than heating current.com/pdf/PC2005_05."
"This demonstration project is a critical step on the path to the
development of practical, commercial superconductor transformers in China -- a
market we believe will be very large," said Greg Yurek , chief executive of
AMSC.

variacs switchmode

6 x 0.1 Amps to 65 microhenries 0.9
microhenries 2 Amps to 330 microhenries 0.157 inch.
When it is not possible to achieve the required inductance at the
rated current from the drum-core product range, the next step is to
examine alternative technologies such as larger toroidal inductors,
bead, flat coil, or planar inductors.pulseeng. Programmable chip takes electricity metering into the 21st century

GENEVA, STMicroelectronics (NYSE: STM)
has announced the availability of a new device that incorporates all of the
core circuitry required to implement fully electronic electricity meters.5) circuitry.st.
The U.S.cn/english.

variacs chokes

Business Editors/High-Tech Writers

SAN DIEGO----Pulse, a Technitrol
(NYSE:TNL) Company, one of the world's largest electronic component
manufacturers and a leader in passive, magnetics-based components ,
introduces five new series of unshielded and shielded surface mount
(SMT) drum core power inductors for a total of 96 different parts.272 x 0.
The inductor is an energy storage device which stores energy in an air
gap in the flux path of the inductor. In general, the rated current at a particular inductance will
increase with inductor size. They also
meet UL94 V0 standards. Detailed
specifications are available on datasheets PC2005_10
(http://www. The Pulse European offices are located
in the United Kingdom and may be reached at +44-1483-401700, and its
Asian offices in Singapore can be reached at +65-6287-8998. For more
information, visit the Pulse Web site at www. In
addition, the computed power values are also converted internally into pulses
to directly drive stepper motor displays in the most cost-sensitive low-end
applications.
The OTP block, which is accessible via a simple PC interface and software,
allows fast and accurate calibration of the voltage and current sensors , phase
correction and temperature drift.

Further information on ST's range of interface and metering IC is
available at http://www.
Another major advantage is the substitution of cheap , environmentally-friendly
liquid nitrogen (air is 79% nitrogen) in HTS transformers to provide cooling
and electrical insulation for the more expensive electrical insulating oils
utilized in conventional transformers. This reduces oil consumption and the
risk of transformer fires associated with oil leaks.

yuanxing switchmode

45 inch.32 Amp; size is
0. Lead-time is
six to eight weeks.com/pdf/PC2005_22. Pulse primarily serves OEMs in the data
networking, telecommunications, high-speed Internet access, power
conversion, military/aerospace, and consumer electronics industries. This is because the demand for electricity continues to rise
very rapidly and because energy efficiency is becoming increasingly important
in China.3%.

About China's Institute of Electrical Engineering (IEE)
IEE is a research institute of the Chinese Academy of Sciences (CAS).

transformers toroid

409 x 0.

"Drum core" is used to describe the shape of the ferrite core used
in these power inductors, and it differentiates them from other types
of inductors such as toroidal, flat coil, or planar.com/pdf/PC2005_10. Transformers are then used again to decrease voltage to more
user-friendly levels near customers. Replacing copper wire currently employed
in conventional transformers with high efficiency HTS wire reduces the waste
of energy inside the transformer due to copper wire's electrical resistance.

American Superconductor, AMSC, POWERED BY AMSC, Revolutionizing the Way
the World Uses Electricity are trademarks of American Superconductor
Corporation.

mfy coils

For the DCR
value, generally smaller is better because direct current resistance
is unwanted as part of the input power is consumed in heat and not
transferred to the application efficiency of the DC converter.
Recognized as experts in interference (noise) reduction,
miniaturization, power management, and signal conversion, Pulse offers
an extensive line of custom and standard passive magnetic solutions
for OEMs in commercial as well as consumer industries.com/News/media_gallery.

STMicroelectronics Simplifies Emerging Energy Metering Applications with Smart Power Technology

Electric utility companies around the world are increasingly looking to
replace the traditional electromechanical meter, which has remained
essentially unchanged for over a century, by electronic meters.5 wattmeters, while a Synchronisation pin also supports
three -phase metering applications. It
focuses on R+D of high technologies for the safe and reliable operation of
power grids and new sources of energy. The Applied Superconductivity
Laboratory, which is associated with IEE, is one of the key laboratories of
the CAS. AMSC's
HTS wire and power electronic converters are at the core of a broad range of
new electricity transmission and distribution, transportation , medical and
industrial processing applications, including dynamic reactive power grid
stabilization solutions, large ship propulsion motors and generators, smart,
controllable, superconductor power cables and advanced defense systems.com.

voltech toroids

All parts in these series are RoHS compliant and can support a
peak reflow soldering temperature of 260 degrees Celsius.
Pulse is a member of and actively participates in IEEE, ANSI, T1/E1,
and the DSL Forum.
The STPM01 is priced at approximately US$2.

* Complemented by a rich portfolio of microcontrollers (from the 8-bit
ST7 to the 32-bit STR7 families) and Programmable System Devices,
EEPROM and Flash memories, Real -Time Clocks, supervisor/reset
circuits, smart card/RFID products, Power Line modems and smart PSU
chips and a dedicated Competence Centre, the STPM01 extends ST's
unique ability to offer complete system solutions for the full
spectrum of emerging metering applications . "We need
to utilize innovative technologies such as superconductor transformers, fault
current limiters and other devices, to guarantee the reliability and stability
of our power grids because electricity is an essential ingredient in achieving
sustainable economic growth. The total energy efficiency of this first device
was 98. More information is available at http://www. In addition , the forward-looking statements included in this press
release represent the Company's views as of the date of this release.

penka autotransformers

The SPI interface is used to control, configure and calibrate the device
using the OTP block and to transmit the digital output data to an external
MCU, which handles data collection and management in high-end applications. An electronic
integration circuit converts this to a voltage that is directly
proportional to the current.
According to Dr. With a world-class R+D center located
in Shenyang, Liaoning Province, TBEA designs and manufactures AC transformers,
DC transformers, reactors and special transformers rated up to 1000kV, widely
used in many of China's major engineering projects including the Three Gorges
project, Qinghai-Tibet Railway , Er'tan Hydraulic Power Station, National Model
Project of Northwest China 750kV power transmission , Longtan Hydraulic Power
Project, and Guizhou-Guangdong DC Power Transmission Project.

autotransformers italtras

PF0580 unshielded inductor series: 22 values from 1 microhenry
3.5 Amps to 560 microhenries 0.

PF0560 shielded power inductor series: 15 values from 1. The shielded drum
core inductor has a higher inductance for the same number of wire
turns than the unshielded inductor due to the smaller air gap and
higher permeability of the ferrite cylinder. This operating temperature range is important because
in certain applications, such as portable products with small
enclosures, the temperature to which the equipment is exposed can
change significantly.com/metering

This press release is also available at:
http://www.ac.

ferrites vanson

They come in trays or tape-and-reel packaging.. HTS transformers expected to provide oil-free, high energy efficiency
replacement for oil containing , copper-based power transformers for electrical
grids

WESTBOROUGH, Mass. In addition,
TBEA exports to over 50 countries including involvement in the American West
Power Grid Update Project and Asian-European Cross-continental Power Grid
Update Project. Such factors include:
uncertainties regarding the Company's ability to obtain anticipated funding
from corporate and government contracts, to successfully develop, manufacture
and market commercial products, and to secure anticipated orders; the risk
that a robust market may not develop for the Company's products; the risk that
strategic alliances and other contracts may be terminated; the risk that
certain technologies utilized by the Company will infringe intellectual
property rights of others; the competition encountered by the Company,
including several large Japanese companies .

mfy inductor

68
microhenry 20 Amps to 150 microhenries 2 Amps; size is 0.

PF0601 shielded power inductor series: 22 values from 2.
Applications that use drum core inductors include, but are not
limited to:

-- Catalog power modules

-- Computer equipment - notebook computers, hard disk drives,
video graphic cards, small printers

-- Telecom equipment - modems, mobile phones, set-top-boxes

-- Consumer electronics - game stations, digital cameras, PDAs,
LCD displays and TVs, CD players

It is important to consider several electrical specifications when
selecting a drum core inductor. All
brand names and trademarks are properties of their respective holders.

Cautionary Note: This message contains "forward-looking
statements" within the meaning of the Private Securities Litigation
Reform Act of 1995. Among the many
advantages of electronic meters are increased accuracy, reliability and
robustness, easy calibration and reconfiguration, and the ability to
incorporate advanced functions such as multi-tariff billing, tamper proofing,
pre-payment, power outage detection, power factor measurement and automated
meter reading services . Further information on ST
can be found at http://www.com., American
Superconductor Corporation (Nasdaq: AMSC), a leading energy technologies
company, and China's Institute of Electrical Engineering (IEE) today announced
that IEE has successfully demonstrated a prototype superconductor-based power
transformer for the first time in a power grid in China. During its operation at the TBEA transformer plant, the HTS
transformer was tested by the Shenyang Transformer Institute, which confirmed
the prototype met all transformer standards.iee.amsuper.

voltech autotransformers

19 Amp; size is
0.
Inductance at rated , or peak, current is a critical parameter and
is determined by the application.pdf)
for the PF0601 series, and PC2005_22
(http://www.

About STMicroelectronics
STMicroelectronics is a global leader in developing and delivering
semiconductor solutions across the spectrum of microelectronics applications. The
Company's shares are traded on the New York Stock Exchange, on Euronext Paris
and on the Milan Stock Exchange. In 2004, the Company's net revenues were
$8.8% in 2004, according to the
China Electric Power Research Institute."

Technical Background
The superconductor transformer developed by IEE is a three-phase, 630kVA
device that transforms voltages from 10kV to 400V.9%. Since 2000, it has
successfully tested superconductor power devices such as transformers and
superconducting magnetic energy storage (SMES) systems, and demonstrated an
HTS power cable in a live distribution system.

autotransformers ferrites

5 Amps to 330 microhenries 0. For the unshielded drum core
inductor , this air gap is between the two end discs. First select the direct current
resistance (DCR) value , then match the rest of the electrical
specifications to the requirements of the application.pulseeng .pulseeng.

About Pulse

Headquartered in San Diego, California, Pulse, a Technitrol
(NYSE:TNL) Company, is one of the largest magnetic component
manufacturers in the world.htm
.S. There are a number of important
factors that could cause actual results to differ materially from those
indicated by such forward-looking statements. These forward-looking statements
should not be relied upon as representing the Company's views as of any date
subsequent to the date this press release is issued.

inductance transformers

Pulse Introduces Five New Series of SMT Drum Core Power Inductors; Inductors Meet Requirements for Wide Range of DC-to-DC and Filtering Applications

165 x
0.52 Amp; size is
0. With the inductance
requirement determined, the next step is to identify the smallest
inductor that has the required inductance at the required rated
current. The dedicated DSP performs real-time calculations
of active, reactive and apparent power, RMS voltage and current , and line
frequency, using innovative algorithms for which ISKRAEMECO has filed patent
applications . /

inductance variacs

Because the additional ferrite cylinder keeps the flux in a
controlled path, shielded drum core inductors are better for
applications where the stray flux of the unshielded drum core may
interfere with nearby noise-sensitive electronics or where
electromagnetic interference (EMI) is a concern.
The price range of Pulse's drum core power inductors in these
series are between $0.pdf) for the PF0504 series,
PC2005_02 (http://www. Additional features of the STPM01 include
Live and Neutral wire current monitoring for tamper detection in secure energy
meters; LED drivers to indicate power, tamper detection and no-load
conditions; and a zero-crossing signal that can be used to avoid arcing when
switching heavy inductive loads in industrial control applications.st. The measurement is accurate over a wide
range of mains frequencies, current levels, conductor sizes and
transients.

About American Superconductor
AMSC is the world's principal vendor of high temperature superconductor
(HTS) wire and large rotating superconductor machinery, and it is a world-
leading supplier of dynamic reactive power grid stabilization products.

skot inductors

The
inductors cover a large range of inductance values from sub microhenry
up to hundreds of microhenries, at low ampere currents, in a variety
of sizes to meet the broad range of local DC-to-DC converter and
filtering applications.73 x
0.256 x 0.118 inch.5
microhenries 6. The inductor wire is wound on the rod between the discs.
When the drum core is used as an output choke in a DC-to-DC
converter , the purpose of this choke is to limit the current ripple on
the output of the converter.
In North America, contact Pulse's worldwide headquarters in the
United States at 858-674-8100.pulseeng. It utilizes an amorphous
alloy core to further reduce electrical losses over that achieved by the
superconductor wires alone. It is expected that more mature designs will achieve efficiencies
as high as 99. The prototype transformer is
expected to remain in operation for a total of six months, after which it will
be removed from service to undergo internal examination of all of the
components in order to learn how to make improvements for commercial systems.

inductor variacs

The five new series of SMT drum core power inductors include:

PF0504 unshielded inductor series: 15 values from 0.41 Amp; size is 0. Contact Pulse directly for samples.pdf) for the
PF0581 series, PC2005_18 (http://www. An ISO 9000
registered manufacturer, Pulse is fully engaged in joint development
programs with key customers to ensure they receive high-performance,
high-quality, and high-reliability products at competitive prices. This release
should be read in conjunction with the factors set forth in
Technitrol's report on Form 10-K for the year ended December 31, 2004
in Item 1 under the caption "Factors That May Affect Our Future
Results (Cautionary Statements for Purposes of the "Safe Harbor"
Provisions of the Private Securities Litigation Reform Act of 1995).jpg photo available at
www.
The STPM01 offers high performance in terms of accuracy, allowing full
compliance with the IEC62052-11 and IEC62053 -2X specifications for
single-phase class 0. In addition to the lower component cost due to the high level of
integration, the STPM01 also reduces hidden manufacturing costs associated
with calibration , thanks to the fast, tamper-proof OTP block. Department of Energy estimates that the worldwide market for
transformers with power ratings over 10MVA exceeds US$1 billion annually, with
the fastest growth in sales of transformers occurring outside the U. It has conducted R+D for superconductor
technologies for more than 40 years, and it has successfully fabricated high
field superconductor magnets for a variety of applications including medical
devices, material processing and industrial uses. All other trademarks are the property of their respective owners.

vanson switchmode

In the shielded drum core inductor , an additional ferrite cylinder
is located around the outside of the two discs and guides the flux
between the discs through the cylinder.pulseeng.com/pdf/PC2005_18.pulseeng.com

Copyright (C)2005 Pulse Engineering, Inc. All rights reserved.
Jointly developed by ST and ISKRAEMECO, one of the world's largest meter
manufacturers, the STPM01 is a standard device modified from an ASIC solution
built for ISKRAEMECO using ST's advanced BCD6 smart power technology, allowing
all of the necessary analog, digital and power circuits to be integrated on a
single chip.00 in quantities of 1000
pieces.com/stonline/press/news/year2005/p1642d. In
China, the rate of power consumption increased by 9% in 2001 and continued to
increase year-over-year reaching a rate of 14. Liye Xiao , Deputy Director of the IEE and Director of the
Applied Superconductivity Laboratory at the Chinese Academy of Science, this
project is an important step in demonstrating the value of superconductor
transformers to improve the energy efficiency and reliability of power grids
while reducing the amount of oil needed for use as the electrical insulation
medium in large, conventional transformers . For
more information, please visit the website http://www.

magnetics inductance

367 x 0. The discrete air gap is the
combination of the gaps between each end disc and the ferrite
cylinder.
Both unshielded and shielded drum inductors in these new Pulse
inductor series have been designed to work in an ambient temperature
range of minus 40 degrees Celsius to 125 degrees Celsius.pulseeng. The major blocks include analog signal conditioning, two
Analog-to-Digital Converters, a hardwired dedicated Digital Signal Processor
(DSP), an SPI interface to an external MCU, a block of 56 OTP (One Time
Programmable) bits for calibration and configuration, a Voltage-to-Frequency
converter to drive a stepper motor display in low-end applications, and two
current-limited, low-drop voltage regulators to supply the analog (3V) and
digital (1. The device operates over a wide range of
mains voltage (40-300VRMS) and line frequency (45-65Hz), and can measure up to
200ARMS.

Notes for Editors
* A Rogowski coil is a toroidal coil placed around a current-carrying
conducting cable. "Demand for electric power in
China continues to grow dramatically year-over-year," said Dr.

About TBEA Industrial Transformer Group
TBEA Industrial Transformer Group is the largest transformer manufacturer
in China and one of the largest in the world with annual output reaching
800,000MVA across four industrial sites.

ferrites vanson

The unshielded drum core is a lower cost technology and
the larger energy storage air gap allows it to support higher peak
currents without saturation effects.10 and $0. While
the Company anticipates that subsequent events and developments may cause the
Company's views to change, the Company specifically disclaims any obligation
to update these forward-looking statements.

switchmode transformers

174 inch . The flux path is
through the center rod, outwards through one disc, through the air gap
around to the outside of the other disc, and inwards through the
second disc. The
application will determine the size and height constraints, mounting
method (surface mount device or through-hole) and the need for an
unshielded or shielded drum core. These inductors are
particularly suited to applications that allow a relatively large
current ripple where the peak current will be higher than the root
mean square (RMS) current. Pulse's Power Magnetics Catalog,
which can be found on the Pulse website , can serve as a guide.com/pdf/PC2005_02.pdf) for the PF0580
series, PC2005_05 (http://www.cfm

. including links to further information on this product. It has 35 scientists and engineers and 40 post-graduate students.htm.

spacings wirewound

137 inch. The
electrical performances given are for an ambient temperature of 25
degrees Celsius."

Note to Editors: DrumCore_hires.st.76 billion and net earnings were $601 million.
The device will then be improved if needed and returned to operation in the
power grid. Reference is made to these and
other factors discussed in the "Management's Discussion and Analysis of
Financial Condition and Results of Operation" section of the Company's most
recent quarterly or annual report filed with the Securities and Exchange
Commission.

Category for manufacturers of magnetic components, including ferrites, transformers, coils, chokes and inductors .

spacings italtras

The unshielded drum core has a narrow center rod with a flat disc
on each end. The rated current is the minimum of
heating or saturation current.
Thermal performance is another criterion to consider in selection.20, depending on the part and
quantity. The
STPM01 addresses a wide range of electricity metering requirements, operating
as a stand-alone power meter in the simplest low-end equipment or as a
peripheral in sophisticated microprocessor-based meters that support functions
such as remote metering, reactive power measurement, multiple tariffs and
tamper detection. The output of the coil is a voltage proportional to
the rate of change of current carried by the cable. during the same period was approximately 2% to 3% per
year.

transformers toroids

PF0581 unshielded power inductor series: 22 values from 10
microhenries 2.406 x 0.
The flexible and configurable analog front -end allows the device to work
with a variety of current sensors, including current transformers, microOhm
shunts and Rogowski coils.
The STPM01 is supported by two demo boards/reference designs: a
Measurement Board that allows the STPM01 to operate as a stand-alone solution
for stepper driving , and a Control Board equipped with an ST7 MCU, LCD display
and RTC that connects to the Measurement Board via the SPI to provide a
complete solution for medium/high-end applications.

American Superconductor and China's Institute of Electrical Engineering Announce Demonstration of First Superconductor Power Transformer in Chinese Energy Dist

The transformer was
fabricated by IEE in collaboration with TBEA Industrial Transformer Group, the
largest transformer manufacturer in China, utilizing high temperature
superconductor (HTS) wire manufactured by AMSC.
Power transformers are utilized in power grids to increase voltage
(electrical "pressure") in power lines at generating plants so that
electricity may be delivered through power lines to customers with lower
energy losses. The
Company's products are supported by hundreds of patents and licenses covering
technologies fundamental to Revolutionizing the Way the World Uses
Electricity(TM).

voltech toroidal

406 x 0. The inductance, switching frequency, and
output current will determine the current ripple.pdf) for the PF0560 series
located on the Pulse Web. Actual results may differ materially.
An unrivalled combination of silicon and system expertise, manufacturing
strength, Intellectual Property (IP) portfolio and strategic partners
positions the Company at the forefront of System-on-Chip (SoC) technology and
its products play a key role in enabling today 's convergence markets. The HTS transformer has
operated since November 21, 2005 in a power grid in the city of Changji,
Xinjiang Province serving a TBEA manufacturing plant.S. The rate of increase of power
consumption in the U. Xiao. "China represents one of the fastest growing markets for superconductor
transformers.

Any statements in this release about future expectations, plans and
prospects for the Company, including statements containing the words
"believes," "anticipates," "plans," "expects ," "will" and similar expressions,
constitute forward-looking statements within the meaning of the Private
Securities Litigation Reform Act of 1995.

xfmrs inductors

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- - kjjkjk

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