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Just checked Bryan, and the 3.5A one drives my IBM lappie OK @16 V - but it is a light power user. In the field I have it set to spin down the drive quickly and always have the screen on low brightness behind its red perspex.
Just checked the IBM power brick and it is spec'd for 16V@4.5A out.
I'm pretty certain I put an ammeter in the circuit at some stage to check amps required so must have convinced myself the 3.5A inverter would be OK.
Last edited by erick; 18-01-2010 at 12:48 AM.
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