Solar powered fan

chico1st · 16th December 2010, 01:56 AM

I dont know much about building with solar panels.
I would like to run a fan of mine at 4V (0.3 W) with a 5V solar cell which on short provides 100mA.

How do i know if the cell can run the fan at 4V and a decent current without buying it and testing it?

wwenze · 16th December 2010, 09:19 AM

On short provides 100mA, but what what voltage? The datasheet should say current vs voltage or max current @ specific voltage.

benb · 16th December 2010, 12:02 PM

"On short" would be zero volts. Surely there's some curve or formula for solar cells for voltage vs. current.

16th December 2010, 01:56 AM	#1
chico1st diyAudio Member Join Date: Sep 2010	Solar powered fan I dont know much about building with solar panels. I would like to run a fan of mine at 4V (0.3 W) with a 5V solar cell which on short provides 100mA. How do i know if the cell can run the fan at 4V and a decent current without buying it and testing it?

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16th December 2010, 09:19 AM	#2
wwenze diyAudio Member Join Date: Mar 2008	On short provides 100mA, but what what voltage? The datasheet should say current vs voltage or max current @ specific voltage.

16th December 2010, 12:02 PM	#3
benb diyAudio Member Join Date: Apr 2010	"On short" would be zero volts. Surely there's some curve or formula for solar cells for voltage vs. current.

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