Dam I can't find the diode that I had to try your idea out, guess I will go back to frys and get another one.
I like your idea about putting it parallel to the load, just like an a/c diode.
Here is what I have then you will understand what I am trying to do:
I put in a fan, found a key on voltage source and wala, fan goes. Thing is that when I turn key off the engine doesn't die immediately...takes about 4-5 seconds. Why? Because the key on voltage source I used was for the ignition system and now when power is cut off the centrifugal force of the fan now turns into a generator feeding voltage.
Experimenting I wanted to try a diode but went in series on positive leg before load.
Btw, the # in the diagram is for a rectifier. I have been researching these things online
I reeeeeealy didn't want to write all of this again but did since you didn't know why I went w/ a diode and was nice enough to reply to my question.
Hey where did you get the schematic for the fan control? I would love an adjustable one but want to find one cheap.
Last edited by evesautomotive : 03-01-2009 at 09:37:15 PM.