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PMDC motor as a generator for low power app. | 8 comments (8 topical, editorial)

Re: PMDC motor as a generator for low power app. (3.00 / 0) (#7)
by wooferhound (tim((NoSpamAt))wooferhound.com) on Fri Aug 8th, 2008 at 09:30:04 PM MST
(User Info) http://wooferhound.com

very important question
Do you plan to have a Vertical or Horizontal turbine ?

a string of 4 standard LEDs will pull .020 amp at 12 volts
25 strings strings of 4 LEDs will pull .500 amps at 12 volts
.500amp times 12v equals 6 watts
I would overrate this to account for regulators and resistors and say that you will need less than 10 watts to power your LEDs

Someone else was building a wind powered lighthouse maybe those stories and comments can help you too...
http://www.fieldlines.com/story/2005/9/27/15317/0994
http://www.fieldlines.com/story/2005/12/26/33628/184

W o o f -={(

[ Parent ]

Re: PMDC motor as a generator for low power app. (3.00 / 0) (#8)
by mystiquesbs (mystiquesbs@gmail,com) on Fri Aug 8th, 2008 at 11:24:06 PM MST
(User Info)

I just made a quick LED string using 22 sets of 4 x LED's. I ran it at 14V and it was drawing 200mA. So only 2.8W and the LED's that were being used are ultrabrights. It created more than enough light for the needed illumination so I am now thinking I will need a fewer LED's maybe only around 40-50 meaning a lot less power.

The sculpture will be using a horizontal turbine.

Cheers Brent

[ Parent ]

PMDC motor as a generator for low power app. | 8 comments (8 topical, 0 editorial)

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