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car adapter for canon?

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Offline Edgel

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car adapter for canon?
« on: 16 / May / 2009, 14:28:05 »
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hello, I'm planning to  make a new driving timelapse video, so I was just wondering how i could power my camera through the car cigarette lighter socket ? Maybe a stupid question but will a nokia car adapter work on my canon powershot a570?



 It seems to fit...or is a 12v dc to ac inverter along with my ac adpter the best choice?  What would you recommend?
thanks in advance
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Offline zeno

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Re: car adapter for canon?
« Reply #1 on: 17 / May / 2009, 08:43:35 »
The official A570 Canon A/C adapter I have says it outputs 3.15v - 2A, but when I measure it it's just over 3.5v so there is some tolerance. It has a centre-positive plug.
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Offline Edgel

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Re: car adapter for canon?
« Reply #2 on: 17 / May / 2009, 14:23:19 »
so you are basically saying that maybe a nokia car charger will work? it has an output voltage of 5.7v, is that too much for my canon?  I also have an official canon ac adapter, but i can't use it in a car unless i get an power inverter.
Another option is a DC/DC Switching power adaptor like this one:


Anyone with experience on this?
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Offline Edgel

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Re: car adapter for canon?
« Reply #3 on: 17 / May / 2009, 18:42:45 »
ok, I think I've found one that may work. It converts 12v to 3v, 4.5v, 5v and has an output of max 500mA. Now the question is will it be sufficient  to power the camera?
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Offline Microfunguy

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Re: car adapter for canon?
« Reply #4 on: 17 / May / 2009, 19:14:28 »
Quote from: Edgel on 17 / May / 2009, 18:42:45
Now the question is will it be sufficient  to power the camera?


Not according to page 121 of the Advanced manual.

As Zeno says, that outputs 2 amps.


David
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Offline Edgel

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Re: car adapter for canon?
« Reply #5 on: 17 / May / 2009, 20:07:48 »
the search continues then, thanks anyway.  It seems like every cigarette lighter adapter I've found has an output ampere level  far too low for a camera:( 

A 12v to 230v inverter seems to be  the only option...
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databoy

Re: car adapter for canon?
« Reply #6 on: 17 / May / 2009, 23:28:39 »
The 12volt to 230 volt inverter is a bad idea. Most inverters do not generate a true sine wave output. When you plug in a switched mode power supply into it, both can go into parasitic oscillation. I have heard of both burning out. Don't take my word for it; do your own research at a reputable power supply site.

If you are proficient at electronics:
http://ourworld.compuserve.com/homepages/Bill_Bowden/page12.htm

Otherwise I would suggest bite the bullet and buy a genuine Canon car adaptor.
You can try Ebay, but I would advise against it. Most of the power supplies sold are counterfeit and may brick your camera.

You overhead will be fuel costs. At the end of the day; what is more valuable; the few bucks you save on a power supply or buying genuine and having good quality photos.

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Offline reyalp

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Re: car adapter for canon?
« Reply #7 on: 17 / May / 2009, 23:43:59 »
Quote from: databoy on 17 / May / 2009, 23:28:39
Otherwise I would suggest bite the bullet and buy a genuine Canon car adaptor.
I don't see any 12v adapters in Canons accessory list.
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Offline nonno

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Re: car adapter for canon?
« Reply #8 on: 18 / May / 2009, 06:37:39 »
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Offline fudgey

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Re: car adapter for canon?
« Reply #9 on: 18 / May / 2009, 15:03:08 »
I'm using psu's from my NiMH battery charger, it came with switch mode converters for both 230 VAC and 12 VDC inputs, outputting 3 A max, 3 V. Just had to cook up an adapter for the plugs (a standard 3.15 V DC plug doesn't quite fit like a glove but it seems to be close enough).

Before trying hooking the power supplies up to the a570 I measured them a bit to verify that they're well regulated with and without load.

So far everything's worked beautifully...
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