Author Topic: Fan getting weak  (Read 3177 times)

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Offline Bobvelle

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Re: Fan getting weak
« Reply #50 on: July 26, 2018, 09:50:17 AM »
I can't speak for anyone else's experiences with the Jameco fan motors. But I bought 2 a while back and both have been very picky on voltage. 4-5 volts (5 volt xfmr) it ran for over a year 24/7. When I upped the xfmr to a 7 volts, the fan really pulled some air but burnt-out in less than a month. That was my bad for running the fan over spec voltage. But I noticed that below 3v it was very very weak and based on that, <2.5v would barley run at all, at least with the two I had.

If I had to guess, it appears the model motor you have is drawing more current (amps) that that little 1.2w PV module can put out. Open voltage on a PV panel means nothing. You can have panel that reads 40v open but not create but 2mA of current under a load. Maybe Jameco changed there motor coil windings without a part # change ??
« Last Edit: July 26, 2018, 12:24:45 PM by Bobvelle »