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Temperature measurement circuit using Intelligent Thermal Remote Fan Controller ADT7460

Published on Nov 04 2010 // Temperature Sensor Circuits


Temperature measurement circuit using Intelligent Thermal Remote Fan Controller ADT7460 1

 Temperature measurement circuit using Intelligent Thermal Remote Fan Controller ADT7460

ADT7460 constituted by the transistor with two remote temperature sensors, the use of the transistor emitter voltage (UBE) and temperature characteristics to measure the distance directly proportional to temperature. Remote temperature measurement circuit as shown. The CPU itself is shown with the temperature on the transistor, which is equivalent to a 2N3906 PNP transistor type. The use of discrete transistors, the collector can not be grounded, but should be shorted with the base, as diode used. When using NPN tube, then D will be the base end, then D-side emitter. Selection of PNP emitter tube connected D-side, then D-end base. The following figure shows the 2N3904 type, respectively, NPN tube, 2N3906-type PNP tube wiring.