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Posted: October 6, 2009
Functionality of line filters
Line filters (EMC filters) are often regarded as a Blackbox and, justifiably, the user isn?t
normally concerned with its inner workings. However, for the effective use of filters, it
is advantageous to have some background knowledge. This article focuses on leakage
currents and what should be observed in connection with this phenomenon.
Schurter, INC
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Posted: October 7, 2009
Circuit Breakers for Equipment
The Many Factors to Consider When
Specifying Thermal Circuit Breakers
for Equipment
Thermal circuit breakers for equipment (CBE) protect motors and transformers against
electrical overloading. The trip release of a breaker takes place with the deflection of a bimetal.
This deflection is in turn dependent on heat caused by the level of current flowing through the
bimetal. The typical time-current characteristic of a thermal circuit breaker is a result of the
thermal delay of the bimetal.
Schurter, INC
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Posted: October 7, 2009
Lifetime & Reliability and of Multilayer Piezo Actuators
The paper describes the development and lifetime tests of ceramic encapsulated actuators in comparision with conventional polymer coated piezo actuators. Dynamic operation with a new internal electrode design for stress reduction as well as special external electrodes for high-current applications are discussed.
Several graphs enable the quick calculation of lifetime under different operational and environmental conditions.
PI (Physik Instrumente)
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Posted: October 7, 2009
Parts Collaboration within The Sunstone ECOsystem?: PCB123?, LiveBOM?, Digi-Key? & NXP?
Sunstone Circuits’ technological collaboration with Digi-Key Corporation and NXP Semiconductor provides Sunstone PCB123 CAD users access to ready-made, certified parts symbols from NXP. Not only is sufficient information provided to ensure accurate physical design, but the collaboration also ensures efficient design with component availability and pricing information. Within the Sunstone ECOsystem?, these new functional elements provide the end user with a turn-key level of convenience and accuracy, even when working on prototypes and early engineering projects.
Sunstone Circuits
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Posted: October 27, 2009
Pixel-Sub-Stepping / Image Resolution Enhancement with Piezoelectric Mechanisms
The paper describes basic techniques and explains different piezoelectric motion principles such as flexure mechanisms and ultrasonic motors.
PI (Physik Instrumente)L.P.
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Posted: February 1, 2010
Combining Boundary Scan and JTAG Emulation for advanced structural Test and Diagnostics
Boundary Scan and JTAG Emulation are two perfectly complementary methods, which are fused into one extremely flexible and powerful technique for advanced structural tests by GOEPEL electronic’s VarioTAP technology. By combining the benefits of both methods, VarioTAP provides a significantly higher test quality, shorter test and programming times, and higher quality of diagnostics with considerably reduced costs.
GOEPEL electronic
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Posted: February 1, 2010
Analog Signature Analysis as a Troubleshooting Method
Brief discussion on the use of power-off analog signature analysis as a method for troubleshooting failures in electronic circuits. Includes real world signature analysis example.
Huntron, Inc.
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Posted: February 11, 2010
Towards a universal registry of photovoltaic modules and assemblies
The issues surrounding serialization of
photovoltaic modules and related large
assemblies have been under discussion for
some time. One major industry standard
is for a minimum 25-year product lifetime
and warranty on every module.
CHRISTOPHER ASSOCIATES, INC.
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Posted: March 1, 2010
Understanding Grounding Concepts in EM Simulators
Misunderstanding how ground is implemented in circuit simulation is one of the most common misuses of electromagnetic (EM) simulators and their results. This white paper discusses the definition of ground in EM simulators and how to correctly choose among various grounding options, a topic of special importance to designers using the results in a circuit simulator. Many modern simulators now support the notion of local grounding, where different ports can use different ground definitions. New features in AWR’s AXIEM? 2009 3D planar EM simulator offer extensive sources/ports and de-embedding options, including internal edge, finite difference/gap and extraction ports, and per-port, coupled line and mutual
group de-embedding.
AWR Corp
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Posted: July 21, 2010
Development of Highly Reliable Multilayer Piezo Actuators
The paper describes the development and lifetime tests of ceramic encapsulated actuators under different operating conditions (DC and AC). The actuators are compared to polymer coated piezo ceramic actuators in long term tests. Equations and graphs for lifetime calculation under different operational and environmental conditions and special internal electrode designs for stress reduction are discussed.
PI (Physik-Instrumente)
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