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Simple fan Speed Control

Discussion in 'Article Discussion' started by macroman, 10 Dec 2001.

  1. macroman

    macroman The One

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  2. Guest-16

    Guest-16 Guest

    Your great :) Just what i was gonna ask on the forums actually LOL!! Ive managed to burn out my rheo so its stuck on high :( produced a LOT of smoke.

    Which is best for a Sayno Denki 53cfm jobbie?? Can remember the Wattage though, but its quite high (not near delta 80mm though).

    Also what happened to your classic "happy moddin" at the end of your articles? Youve just put "the end" on this :confused: its a small thing, but something i always noticed and liked :):):)
     
    Last edited by a moderator: 10 Dec 2001
  3. Koolvin

    Koolvin The Modfather

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    I do like those Nikon cam's ;)
     
  4. macroman

    macroman The One

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    :confused: :D
     
  5. macroman

    macroman The One

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    Ok you win, I will put it back when I get a mo':D
     
  6. Guest-16

    Guest-16 Guest

    yay - lol. That's probably the most stupid comment youll ever have about one of your articles too... i feel so silly. BUT IT MATTERS!!! :D:D
     
  7. cpemma

    cpemma Ecky thump

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    Slight mod is to connect the unused rheo terminal to the slider. Then, if the slider contact ever fails (dirt, etc) the fan continues on minimum speed.

    We wear belt and braces in Yorkshire. ;)
     
  8. macroman

    macroman The One

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    Good point. I always connect any unused terminals to wipers as prudent design practise, but in this case the aim was to make things as simple as possible. ;) (As I try to for most of my published circuits)
     
  9. Minority

    Minority What's a Dremel?

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    how would i add a led to this simple fan speed control? .. Where precisely? Just thought it'd look nice with a led.... :rolleyes:

    minority
     
  10. brutal

    brutal What's a Dremel?

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  11. Minority

    Minority What's a Dremel?

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    *cough* does that have a LED? *no* *cough*

    and i just wanted to know if it is possible to add a led to it, so that it's brightness shows the fan speed, the brighter - the faster the fan, the less bright - the slower the fan.

    Can this be done? :confused: :eek: :(
     
  12. brutal

    brutal What's a Dremel?

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    if you wired the LED on the output side with a resistor to run on 12volt(or max voltage of the line), then as you dimmmed the voltage the led would dim.
     
  13. Minority

    Minority What's a Dremel?

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    thnx ! :)
     
  14. SMudgeh

    SMudgeh What's a Dremel?

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    Rheostats/Variable Resistors

    Maplin appear to be stopping/have stopped the variable resistors used in this article :(

    I'm not too hot on the electronics scene, can anyone tell me where I can get the required bits to do this mod?
     
  15. SiMonTiST

    SiMonTiST Minimodder

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    Hey, I've had an idea!

    why don't you use a sliding pot for speed control?:idea: :idea:
    that means you could have a sorta scale or somathing beside it..
     
  16. waltergronkite

    waltergronkite What's a Dremel?

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    yeah where can u get the bits for this mod?
     
  17. slytherock

    slytherock What's a Dremel?

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    What if I use a bigger pot to do this mod? Let say a 5k
     
  18. Jedi

    Jedi What's a Dremel?

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    the control would be far more sensitive and probably stop the fan after not much turning
     
  19. slytherock

    slytherock What's a Dremel?

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    At least it would work, so I don t have to buy another one, I had a couple of 5k left
    Thx
     
  20. dragon-fly

    dragon-fly What's a Dremel?

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    i have a question

    Macroman, does "rheostat should be rated at least 3 Watt, (for fans up to 10Watt)," mean that you can put fans that take 10 watts of juice on a 3 watt rheostat without any rheostat burning up or heat problems? it seems to me that 3 watt rheostat means that the rheostat can take 1 fan of 3 watts... (confused) :confused: i did the circuit and everything and even added 6 blue leds, but im not sure about the 3 watt/10 watt thing, so im only controlling 1 fan now... i put my rheobus on a 5 1/4 inc faceplate with the 6 blue leds on top. :D cool article tho and thanks! i was wondering why my 25 ohm pots were creating smoke... turns out they were rate 0.5 watts.. :duh:
     
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