Hey, I am going to upgrade the ventilation in my cabin that is off-grid solar powered (12V)
I am looking to upgrade from one of those fans with a built in solar panel, to a computer case fan connected to my solar cell and batteries.
The fan that i have is ineffective, noisy and unreliable. (If the built in solar panel gets a little dust on it, it wont work..)
What I would like is to have is the fan running when the solar panel is charging (in the winter that is a couple of hours per day at most where I live), so that it can't empty the battery. Basically it would work the same way as the one i currently have, just with a better fan and with more reliability.
So what i need is a controller that switches the fan on when the solar panel is charging. I would like to either build one out of electronic components, or use something "off the shelf" and make it as simple/reliable as possible. Maybe something that switches on at say 12.7V? Or is there a better way? Any suggestions on a circuit/component that would do that?
Thanks in advance!
I am looking to upgrade from one of those fans with a built in solar panel, to a computer case fan connected to my solar cell and batteries.
The fan that i have is ineffective, noisy and unreliable. (If the built in solar panel gets a little dust on it, it wont work..)
What I would like is to have is the fan running when the solar panel is charging (in the winter that is a couple of hours per day at most where I live), so that it can't empty the battery. Basically it would work the same way as the one i currently have, just with a better fan and with more reliability.
So what i need is a controller that switches the fan on when the solar panel is charging. I would like to either build one out of electronic components, or use something "off the shelf" and make it as simple/reliable as possible. Maybe something that switches on at say 12.7V? Or is there a better way? Any suggestions on a circuit/component that would do that?
Thanks in advance!