ABSTRACT Cooling fan noise is a system property determined as much by thermal and mechanical design and fan selection as by a fan’s acoustical design. While even the quietest fan can be used in a noisy manner, a significant fraction of unpleasant surprises can be avoided. NOMENCLATURE C Numerical constant D … [Read more...]
Some New Cooling Ideas are Needed Here
In the 1920s, the field of physics was in disarray. The reason was that many careful observations and experimental data could only be explained by conflicting theories; for example, some proved that light was a wave, while others provided it had a particle-like nature. Other experiments, such as those in black-body radiation or the photoelectric effect, could not be explained … [Read more...]
Using Wide Bandgap Materials in Power Electronics Presents a New Set of Thermal Challenges
The power electronics industry has reached the theoretical limits of silicon and now is moving to other semiconductor materials whose performance meets the requirements of today’s high power density systems. A number of techniques are being used to overcome the thermal limitations of power modules. One approach is using semiconductor materials which are able to bypass Si’s … [Read more...]
Thermal Management of Outdoor Enclosures, Part 5A: Passive PCM Cooling Systems
In Part 1 (Thermal Management of Outdoor Enclosures), key aspects for successful design and development of thermal management systems were covered briefly, among these, cooling device selections and its impact on power, battery back-up and maintenance has therefore become of paramount importance for telecommunications enclosures. These are: Full active systems, like air … [Read more...]
Review of FLIR’s FLIRONE PRO IR Camera
While most of my clients are most interested in EMI mitigation, a few wonder aloud about certain IC temperatures. For that reason, I carry a small IR thermometer in my troubleshooting kit. However, when FLIR announced the FLIRONE PRO module that attaches to iPhones, I was hooked and had to purchase one. The FLIRONE PRO includes a dual camera – one for infrared capture and … [Read more...]
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