How to power something w/ a nicad camcorder battery?

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Jakobud:
Yeah I have not looked closely enough at the device to see what the configuration of the batteries is in. I was just seeing if anyone here had any sort of good websites or something as resources for figuring things like this out. I know the voltage and currents are not going to be the same, but have you seen that guy who made all the portable Atari 2600's? And he made a portable NES and a portable SNES. For a couple of those systems he was running the console and an LCD screen off of a regular Sony NiCad camcorder battery. And I'm sure that he had to create some sort of circuit to make it handle the proper amount of voltage and current....wasn't sure if anyone here would have any thoughts or ideas.

romid:
Im thinking the most you will need to change get the correct voltage is 2 resisters. Once you have the correct voltage going to the device, the internal resistance of the components inside will determine how much current is drawn. If the battery can provide that much current, you should be good to go.

We'd all like to know what you're trying to power ;)

http://webhome.idirect.com/~jadams/electronics/series.htm This provides a decent explanation...

Shadowfire:
Just FYI I would absolutely NOT use a voltage divider (2 resistors) to step down a voltage for a power supply. The more current you need to power the device, the lower the resistance you need, and the more heat it generates and the more power it wastes. I would definitely look into some sort of switching or even a linear power supply unit (if you need to go on the cheap). They will regulate voltage for you, too.

Beley:
use something like a lm150 or lm350 to regulate the voltage for you, they are fairly efficient especially compaired to resistors. But as RandyT said check if you even have to do anything before you worry about regulating the camcorder battery

Jakobud:

--- Quote from: romid on February 26, 2003, 07:27:34 pm ---
We'd all like to know what you're trying to power ;)

--- End quote ---

One of these:

http://www.5dt.com/products/pdataglove16.html

Yes yes...this is offtopic and should probably be moved into the OT area. I just wanted to post this question here because there are so many knowledgable people here who are eager to answer questions and figure things out :)

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