Hi SPL15, one of the few members of this forum I would trust my 8890 with. A man after my own heart, backs his arguments up with detailed knowledge
. And thanks for the compliments from all my loyal supporters
First up myrkat since you have been off having your eyes reground and degreased (glad that is over huh?) I posted this
about the power supplies for the 8890. (BTW there is currently some problem with the forum's direct post referencing links - it only takes you to the thread start - had to use the old method. I have emailed Ratha about the problem).
Just to clear up any confusion the 8890's are 120W.
Back to SPL15's comments, the efficiency quoted by the power adaptor manuf. is 87%. Thus 120W/0.87 = 138W which would be within the capabilities of the Linksys L03040 power inverter (some more details here
). Now whilst I would worry about melting my cig lighter wires drawing out 140W (~ 12 amps @ 12V nominal) if you have a look at the device it does provide all sorts of undervoltage alarms and protection.
On the AC side the specs on the device are 114V AC +/- 5% which is 108V - 120V AC. That is well within the specs of the supplied AC power adaptor (hey it can handle up to 265V peak (check the specs again) - I should know it has to do that here in Oz). Admittedly the signal is not going to be a nice sine wave but it will keep our AC adaptor happy (see Ryan's comments).
Whilst 300W would be nice it probably is overkill. Just be aware of the possible dangers:
1. overheating the wires that connect to your cig lighter (or buy a Lincoln Continental
). Check the fuse rating of the cig lighter if you are unsure. It would need to be rated at 15A.
2. Your car battery is not designed for deep discharge. If you want to run the laptop for any lengthy period you are going to have to keep the engine running.
Otherwise it looks good. I may even buy one myself. A bit wierd for me though, as it puts out 110V AC - glad I kept my second US power lead. I knew I would have a use for it.
As to a hairy plane adaptor, I can just imagine the scene know, over the intercom comes "would the owner of a Sager 8890 please unplug their laptop, we are losing altitude..."