摘要：In everyday life that is automated is a lot of need for these tools is very helpfulin saving time and effort, with this do not bother anymore to turn on or operate aparticular device. Automatic Room cooling fan is an automated tool that worksbased on changes in temperature, this instrument uses Temperature Sensor LM335 temperature sensors which can hold a steering voltage is increased by 10mV per oC. This circuit requires registration 12v powersupply and is designedto automatically turn on the LED as keluran indicating changes in temperatureand activate the DC fan (DC Fan) if the temperature detected by the LM335temperature sensor reaches 32oC or more, and also this tool can be used invarious application. Bibliography (1991-2008).
