can any one help me in this ?

Thread Starter

mohebegy

Joined Mar 26, 2009
1
i want to do a project of a temperature sensor and connected to it a fan and a heater and when the sensor sense a certain value ,give an order to the heater or the fan to act according to is this value is it above or below to an preadjusted value .i tried to search about this project but all i found is an electronic circuits without control diagram
so if any one have any ideas i will be appreciated
 

Bernard

Joined Aug 7, 2008
5,784
I use this circuit to control an electric heater [ with fan ] because there is too much heat soak on the heaters thermostat. The temp. sense ,Rt, is a 30k thermister; temp adj via 50k pot. Operation would be improved by subing a 9V IC regulator for zeners. FET unknown house no., may be RS 276-2074 TMOS. The sensor is mounted on a small thermally isolated heat sink. Fuse, 15A SB.
 

Attachments

Top