I have an inverter that I use for solar power. It has 3 box fans 2 of which are 150cfm and the other one has a tach wire and only spins around 60 cfm. Since there are 2 power boards full of fets that I don't want blown I don't trust a low cfm fan to cool the other board. So basically it's power board, Toroid coil, power board in that order and control boards mounted on top of the last power board. Since the control board controls the low cfm fan and expects to see a tach signal, or goes into alarm, I need a way of giving it a signal when needed.
I was thinking of using something like an NE555 timer with a pot to give the correct frequency when that fan is turned on by the control board. Not sure of the output voltage for the fan yet but I can make a regulator to get the voltage down. I've been putting off learning to use my mini DSC as well.
Any ideas folks on a diagram?
Thanks!
I was thinking of using something like an NE555 timer with a pot to give the correct frequency when that fan is turned on by the control board. Not sure of the output voltage for the fan yet but I can make a regulator to get the voltage down. I've been putting off learning to use my mini DSC as well.
Any ideas folks on a diagram?
Thanks!