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Metals For Thin Wires – Criteria Of Choice

 

When a designer has to deal with thin current-carrying wires, a number of thermal issues pop up: Joule heating, heat losses and temperature measurement. For standard lead wires, one usually wants minimal Joule heating and minimum thermal resistance (in order to maximize the heat losses). Minimization of heat losses may be important for a research environment. Maximum Joule … [Read more...]

Vibration Analysis For Electronic Equipment

 

This topic is rather esoteric and usually an afterthought in commercial and industrial applications. In military and defense electronics, it is one of the major drivers for design and product architecture early on in the design cycle with specific targets/budgets. As with junction temperature requirements in a thermal design, there are structural dynamic issues that need to be … [Read more...]

Phase Change Material Thermal Properties

 

Table 1. General Solid-Liquid PCM Characteristics [1] When electronics are operated under transient conditions, increasing the thermal capacitance is a useful technique for limiting temperature increases and/or minimizing the performance requirements of a heat sink. One effective method of increasing thermal capacitance is to include a material that undergoes a change of … [Read more...]

Review of Low Profile Cold Plate Technology for High Density Servers

 

Introduction Water cooling of computers was introduced more than twenty years ago, but had disappeared from the mainstream by the mid 1990s. The conversion of chip technology from bipolar to CMOS (complementary metal oxide semiconductor) was the main reason. As chip powers continue to increase, water cooling appears likely to become mainstream again. In the current market, the … [Read more...]

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