High power (1A) switching voltage regulator

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Betta
 
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Joined: Sat Jan 12, 2008 6:44 pm

High power (1A) switching voltage regulator

Post by Betta »

I think this switching regulator may solve the problem of charging IPhone/Ipod touch that require more than 500 mA
http://www.dimensionengineering.com/DE-SWADJ.htm
(also available at http://www.all-battery.com)
It's very small and there is no need of external capacitors or resistors.
It can fit the altoids gum tin can, and the price is only $15 plus shipping.

adafruit
 
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Post by adafruit »


Betta
 
Posts: 4
Joined: Sat Jan 12, 2008 6:44 pm

Post by Betta »

Yes, thanks,
I did not see this regulator in the site. It's better.
Thanks for finding out.

Betta
 
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Joined: Sat Jan 12, 2008 6:44 pm

Post by Betta »

One more thing:
For people who do not want to solder, this site also sell an adaptor to connect wires from battery:
http://www.dimensionengineering.com/VregBreakout.htm

Entropy
 
Posts: 472
Joined: Tue Jan 08, 2008 12:43 am

Post by Entropy »

Keep in mind that at some point, the internal resistance of 2 AA batteries will mean that you won't get any benefit out of a regulator that has higher output current capability.

Using 4 AAs in a 2-series,2-parallel configuration might work much better, or 3 AA NiMHs in series.

Cs and Ds might not provide that much benefit for alkalines - I've heard that their internal resistance isn't actually that much lower than AAs. (Hence the comment about 4 AAs in 2s2p configuration instead.)

Sidster
 
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Joined: Sun Jan 13, 2008 8:45 pm

Post by Sidster »

Looks like we are going to the full size Altoids box ;)
I've seen someone on this forum use 4 AA in parallel in his box.

This regulator.. how efficient is it? Does it have a high operational current draw?
Entropy wrote:Keep in mind that at some point, the internal resistance of 2 AA batteries will mean that you won't get any benefit out of a regulator that has higher output current capability.

Using 4 AAs in a 2-series,2-parallel configuration might work much better, or 3 AA NiMHs in series.

Cs and Ds might not provide that much benefit for alkalines - I've heard that their internal resistance isn't actually that much lower than AAs. (Hence the comment about 4 AAs in 2s2p configuration instead.)

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