schematics Control speed of Nidec fan


Posted on Feb 6, 2014

I have a Nidec TA450DC B35502-35 fan which I`ve installed in a large wooden cabinet where my computer and other electronics sit. This cabinet of course gets hot from all the electronics inside of it. The fan forces air in from the room and goes out through openings in the top of the cabinet. This fan has 4 wires: red (+12v), black (ground), and then blue and yellow.


schematics Control speed of Nidec fan
Click here to download the full size of the above Circuit.

I`m using only red and black to give the fan full 12v power. The problem is since it`s at max speed, it is way too loud. I have a simple toggle switch to turn it on and off. What I would like to do is replace the toggle switch with a knob to adjust the speed. I don`t know how to use the other two wires to control the speed. What kind of knob do I need to get, and how should I wire it The minimum setting of the knob should feed the fan with its minimum required power to spin at the lowest speed possible, and the highest setting should spin it at full possible speed. I don`t have any problem with soldering a small circuit board together for this project, I just have no idea what schematic I need to put together. I`ve played with electronics and their components all my life but don`t know nearly enough to even begin understanding how to accomplish this. It should be simple, right Should I be using one or both of the additional wires for this, or should I use some method of adjusting the voltage




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    PC home light control system
    Diode tester using PIC 16F84
    Electronic-dice
    150 Watt amplifier circuit
    xilinx Documenting Digital Design Schematics and Figures
    Adjustable 1-10 Minute Timer Project
    geiger counter circuit
    Armstrong Oscillator
    Simple Robot That Drives Forward and Back
    Hidden wire detector
    Sound delay lamp circuit diagram



    Top