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simon630
Joined: 07 Sep 2003
Posts: 17
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| Battery recommendation |
 Posted: Thu Dec 25, 2003 11:01 pm |
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dear friends,
I am now looking for one high capacity, high pulse current (about 100mA), and tiny size battery. The best i can find is alkaline LR43 from energizer with 80mAh. btw, not rechargeable one preferred. Do any of you have better recommendations?
thx & warmest regards
Simon |
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Charlie U
Joined: 09 Sep 2003
Posts: 183
Location: Somewhere under water in the Great Lakes
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| Battery |
| Posted: Fri Dec 26, 2003 10:32 am |
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| What about the LR44 series (Energizer number A76) which is the same diameter, and only 1.2mm thicker? It has nearly double the rated capacity at 150 mAh. |
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Neutone
Joined: 08 Sep 2003
Posts: 839
Location: Houston
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| Re: Battery recommendation |
| Posted: Fri Dec 26, 2003 1:03 pm |
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| simon630 wrote: | dear friends,
I am now looking for one high capacity, high pulse current (about 100mA), and tiny size battery. The best i can find is alkaline LR43 from energizer with 80mAh. btw, not rechargeable one preferred. Do any of you have better recommendations?
thx & warmest regards
Simon |
I would start by figuring what voltage is needed for pulse current and continous current.
A standard watch battery can run a PIC with a 32Khz clock for a long time. They usualy run at ~3V but that should not be a problem if care is taken in the circuit design.
For pulse current you can use a battery with a different voltage to match your pulse load requirements and use a transistor to switch power. If you figure your pulse duration and frequency you can solve for the mA hours you will need or a good value to match you PIC battery life. Tatteran (I may have spelled it wrong) is a good battery manufacturer for high power in a given form factor. |
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