Furnace Fuel Miser Circuit


Posted on Oct 22, 2012

A timer (LM555CN) and decode counter is used to generate duty cycles from 10% to 100% to control the time a heating system can operate. V2 is a decode counter that can be switched from 10% to 100% duty cycle. V3A and form a latch that drive Al, LED1, and V4. The triac TRI is used as an ac switch, in series with the thermostat that controls the heating system. Electric-heating systems thai do nut contain a low-current thermostat (as in the previous installation), use a heavy-duty thermostat that directly feeds current to the heating element.For such systems, it will be necessary to install a heavy-duty relay (Kl in this example) to control the heavy heating-element current.


Furnace Fuel Miser Circuit
Click here to download the full size of the above Circuit.

Some oil-fired systems use three-wire thermostats to control the operation of the burner motor and ignition system by activating a relay. This is a typical installation for such systems.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Multi-color LED driver
    Crystal oscillator
    Digital weight scale
    Inclinometer
    lamp turning off prevention circuit of car
    Motor speed control circuits
    dvd burner laser pointer proper way 18
    HQ Notch Filter Without Close-Tolerance components
    RF VOLTMETER
    BA532 Amplifier circuit diagram
    Structure and working principles of various protective circuit diagram e



    Top