What information does light, reflected from a running electronic device, carry? Our research team has been working upon this key question for almost a decade. As this magazine is dedicated to thermal issues, we will focus upon these aspects of optical probing. Figure 1 shows the general principle of our experimental method. Light is shone upon a running device. When the device … [Read more...]
The treacherous streams
During the development of a telecommunications product, an unpredictable phenomenon of air streams within the maze of cards and module was encountered. It could only be compared to suddenly confronting powerful inner streams in a calm ocean. Unlike the ocean, however, these streams appeared in a man-made machine. It seemed as if someone had rewritten the laws of physics. It was … [Read more...]
We still have a headache with Arrhenius
"We have a headache with Arrhenius" was attributed to Takehisa Okada, Senior General Manager of Sony Corporation, when asked about Sony's perspective on reliability prediction methods during a U.S. Japanese Technology Evaluation Center visit.[1] The thermal environment is an important consideration in the design of electronics. Temperatures that arise during the use of … [Read more...]
Disk drive reliability and thermal management
Disk drive reliability and thermal management Hard disk drives are electromechanical systems which store information. They are the most complex electronic sub-assembly within a computer. If a microprocessor can qualify as the "heart" of a computer system, a disk drive can qualify as the "brain". Drives store and retrieve data in milliseconds, measured as access and transfer … [Read more...]
