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Originally Posted by Al Skierkiewicz
Jason,
The power supply crosses to a 9 volt DC 1.5 amp power supply but there is no way I can tell you polarity right now. IFI is adamant about using only their power supply, though.
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Even though it runs flawlessly with 12 V, for several years and on several OIs, and with no apparent damage or even excessive heat generation.
I think IFI's main concern with the power supply is more related to the current, as the great majority of cheap 9 V power supplies doesn't even come close to the 1500 mA required for operation, and less current could cause erratic operation of the OI.