LM39U(annunciators and self-control devices) singlechip temperature control circuit

Published:2011/6/1 9:38:00 Author:Lena | Keyword: annunciators , self-control devices, singlechip, temperature control | From:SeekIC

LM3911 is a singlechip temperature control integrated circuit applied to annunciators and self-control devices etc. Internal circuit consists of temperature sensor, operational amplifier and reference voltage source etc. Technical characteristicOutput voltage is inproportion to the thermodynamics temperature, the sensitivity is 10mV/K.Internal reference voltage source regulation value is 6.8V.Add appropriate current-limiting resistance, which can work at volt d.c above 7V.Internal sensor uses transistor e-b node voltage differences that work at different current density as temperature sensing element.Measurement temperature range is -25~+85℃.



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