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热表面警示灯,不需要外部电源
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时间:2019-12-24
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摘要:利用热电发电机(TEG)检测表面温度和升压开关稳压器,一个有用的水平提高甘醇输出,报警电路,闪烁的高亮度发光二极管的表面温度超过阈值时。Maxim > App Notes > Circuit Protection Keywords: hot-surface warning, Seebeck Effect, stepup switching regulator, boost regulator, thermoelectric generator, TEG, high- Dec 06, 2010 brightness LEDs, HB LEDs APPLICATION NOTE 4535 Hot-Surface Warning Light Requires No External Power Abstract:Using a thermoelectric generator (TEG) to sense the temperature of a surface and a step-up switching regulator to boost the TEG output to a useful level, this warning circuit flashes a high-brightness LED when the surface temperature exceeds a threshold. A similar version of this article appeared in the February 4, 2008 issue of Machine Design magazine. Because a hot-surface warning light affects personnel safety, it must operate reliably whenever the surface is hot. Heat, however, complicates th……
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