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6sicSIX |
2010-04-04
, 21:27
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Posts: 162 |
Thanked: 24 times |
Joined on Feb 2010
@ Essex, UK
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#21
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Hey all, does anyone know of a more efficient way to drop 12 volts down to 5? at the moment i'm using an LM7805 with two solar cells, but i'm thinking this is wasting quite alot of energy.. any ideas anybody?
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2010-06-21
, 10:09
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Posts: 162 |
Thanked: 24 times |
Joined on Feb 2010
@ Essex, UK
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#22
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bump............?
__________________
"But when you’re living on the bleeding edge, you should not be surprised when you do, in fact, bleed."
"But when you’re living on the bleeding edge, you should not be surprised when you do, in fact, bleed."
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2010-06-21
, 10:22
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Posts: 193 |
Thanked: 92 times |
Joined on May 2010
@ galveston, tx
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#23
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http://www.dimensionengineering.com/DE-SW050.htm
check this switching regulator
This one's output voltage can be adjusted.
http://www.dimensionengineering.com/DE-SWADJ.htm
Last edited by noipv4; 2010-06-21 at 10:34.
check this switching regulator
This one's output voltage can be adjusted.
http://www.dimensionengineering.com/DE-SWADJ.htm
Last edited by noipv4; 2010-06-21 at 10:34.
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2010-07-26
, 16:39
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Posts: 9 |
Thanked: 3 times |
Joined on Jul 2010
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#24
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Originally Posted by zimon
Hello,
and 2)
Solar Powered 2600mAh Rechargeable Battery Pack with Cellphone Adapters
The text in the box where the solar charger comes in.
http://www1.dealextreme.com/producti...ku_30047_9.jpg
Opening this demands unscrewing two screws and then _carefully_ detaching the solar panel, which is glued with two side soft but pretty stiff stickers. See pics:
NOTE! The battery inside is really just 2400 mAh, not 2600 mAh.
http://imagebin.org/91224
http://imagebin.org/91225 (D- and D+ pins soldered together)
I just bought this 2) charger expecting it to work 'out of the box', till I tried it...
Seems like the images with the 'trick' have been removed from the server, can you please post them again somewhere (or send them to me)?
Thank you very much
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2010-07-28
, 02:56
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Posts: 6 |
Thanked: 1 time |
Joined on Jan 2010
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#25
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Suggest this one: http://cgi.ebay.com/ws/eBayISAPI.dll...=263602_263622
It's a little expensive, but really good.
It's a little expensive, but really good.
