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| John,
I couldn't find a manufactured D-cell battery to 9v adaptor as described before. You would have to build it. I searched under DC to DC converters, looking for a module to convert 12V to 9V. Found one source for a 2W, single output module that will deliver 9V up to 222mA output from a 9-36V source:
http://www.mornsunamerica.com/pdf/PWA_CS-2W.pdf
Part # PWB2409CS-2W
This would allow you to use an old car battery and convert it down to 9V for your weather station.
See link below for requesting price quote for Part # PWA_CS-2W :
http://www.mornsunamerica.com/wide-input.html
Mark | |
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Powering a weather station.
