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Just looking through boxes of old electronics for power supplies for 3 tortoises just installed.  I know Circuitron says 12 V DC can be used and sells one for these, but also says this makes them loud. I don't have any 12 V, but several 6 V old ones available.  Still looking for a 9V which I see is a good bet. If I can't find any 9 V would the 6 V do, or should I buy a 9V?  Also, does the amperage matter much?  I see my old ones vary from 180 to 300 mA. or so. [edit] Ok, I found a 12V DC 500mA just like the ones Circuitron sells for the Tortoises.  If I use this, could I use it for Tortoises separated by 20 feet or so....would it be ok to wire up the power supply from near a couple of Tortoises at one end and run a wire down to the other Tortoise 22 feet away?
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