can any one help me in this ?

Discussion in 'General Electronics Chat' started by mohebegy, Mar 26, 2009.

  1. mohebegy

    Thread Starter New Member

    Mar 26, 2009
    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
  2. Bernard


    Aug 7, 2008
    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.
  3. Mike2545

    Senior Member

    Mar 26, 2009
    A dual (heat/AC) thermostat will do what you want.