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...]
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...]
Technical Data
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...]
An introduction to thermoelectric coolers
Figure 1: Cross Section of a Typical TECouple Introduction Thermoelectric coolers are solid state heat pumps used in applications wheretemperature stabilization, temperature cycling, or cooling below ambient arerequired. There are many products using thermoelectric coolers, including CCDcameras (charge coupled device), laser diodes, microprocessors, blood analyzersand portable … [Read more...]
Thermal control of space electronics
Introduction Telecommunication satellites are all based on the same overall design usinga 3 axis stabilization process, in which the North and South panels act asradiators and so ensure heat removal. This basic principle is illustrated in Figure 1. The ever-increasing demandfor national and international space-based communications in parallel with theevolution of space … [Read more...]
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