Question about Digital Cameras

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Powering the E-510 DSLR

This camera does not have a DC power socket. It only accepts the BLM-1 7.4volt lithium battery which takes 5 hours to charge. You can also buy the LBH-1 battery case which accepts 3 x CR-123A (3 volt) batteries. I am thinking of buying one of those and connecting DC power to the internal connectors inserting it into the camera's battery slot for prolonged desk top sessions.
My problem is: why does the case and the BLM-1 battery have 3 connectors to the camera "+ - and T" and how do the CR123A's provide the "T" connection?
Can you help so that I don't buy a LBH-1 in vain.
Many thanks if you can

Tronic (Dave Heard - South Africa)

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  • Dave Heard Mar 30, 2008

    I could hardly believe my eyes when within a half hour Waterppk had posted a reply. Not only was it quick it contained the exact info I required.

    Wonderful!!!!!

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The T is the thermister that the battery charger uses to determine the battery temperature and make sure it's not being damaged by high temperatures, you can safely ignore it when you hook up an external supply, it won't cause any errors on the camera or anything.

If you want to hook up a DC adapter to your camera just make sure it's a well regulated (a switching power supply should be just fine, like a wall adapter only they're typically much lighter weight but adapt AC to DC) and is the correct voltage. The reason I recommend a switching power supply is that traditional wall transformers only provide the rated voltage at rated load, meaning if you hook up a 12VDC 2A wall adapter to something that draws 1/2A it will have a significantly higher voltage that it has stamped on its case.

Happy Hacking!

Posted on Mar 30, 2008

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