The long-distance temperature test circuit composed of intelligent warm air fan controller ADT7460

Published:2011/8/23 22:41:00 Author:qqtang | Keyword: temperature test, warm air, fan controller | From:SeekIC

ADT7460 is coupled with 2 long-distance temperature sensors consisting of transistors, it measures distance temperature by using the feature that the transistor emitting knot voltage (UBE) is in forward proportion with temperature. The circuit is shown in the figure. In the figure, the CPU itself is taking a temperature test transistor with it, which is equal to a PNP transistor of 2N3906 type. If a separated transistor is used, the collecting electrode can not connect with the earth, but link with the base electrode as the diode. When using NPN transistor, we should connect the base electrode with terminal D+ and emitter with terminal D.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/The_long_distance_temperature_test_circuit_composed_of_intelligent_warm_air_fan_controller_ADT7460.html

Print this Page | Comments | Reading(3)