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Crescent (#610) has used a battery pack for several years; a battery holder with AAA cells and a connector that goes in to the power connector used by the 1500 mA Wall Wart IFI supply. I don't know if they use 6 or 8 cells in series.
It seems reasonable that IFI would use a regulator on the power input, so it might not matter. but the power input is a diode away from the tether power supply line.
Practically every Wall Wart gives the rated voltage only if loaded down to the rated current, depending on the resistance of the transformer secondary for this "regulation". I'd design the "9 V" input to handle 12 V at least, and the 7800 Regulator line can handle 18 V max rated.
Last edited by Lloyd Burns : 18-04-2003 at 10:33.
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