In many cases, especially in the earliest phases of the product creation process, it may be necessary for the Designer to make rough calculations as to the thermal behavior of the proposed product. If a problem is identified, alternative cooling technologies should be considered in the next design phase. In such cases, it is useful to have some idea of the limits of the … [Read more...]
Notes on Using Thermocouples
Introduction Thermocouples are the most widely used temperature sensor in test anddevelopment work. Accurate temperature measurements can be made at low costwith shop-built probes and ordinary low-level voltmeters. What Are Thermocouples and How Do They Work? Any two wires of different materials can be used as a thermocouple ifconnected together as in Figure 1. The AB … [Read more...]
Microthermal imaging in the infrared
John McDonald, Latigo Optics and Grant Albright EDO/Barnes Engineering Division Introduction Infrared imaging methods provide unequaled ease and flexibility forinvestigating micro-circuit temperatures. The researcher need only slide thecircuit under the objective lens and power it up in order to measure thetemperatures throughout the micro-circuit at once, precisely and … [Read more...]
Measuring chip temperatures with thermochromic liquid crystals
Introduction Measurement of the temperature distribution of an operating electroniccomponent, including its junction and case temperatures, is necessary tocompletely characterize the thermal and electrical performance of today's highpower density electronic components. As part of the characterization process,thermal designers must be able to predict and verify the … [Read more...]
Electrical temperature measurement using semiconductors
Introduction Semiconductor junctions offer many useful properties including inherentcharacteristics which are well suited to temperature measurement. Within theelectronics cooling arena, these properties form the basis for "theelectrical method of junction temperature measurement" and are used formeasurement of junction temperatures within operating semiconductor devices. They … [Read more...]
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