[Diy_efi] RE: data acquisition from engine with PC soundcard

[Laird Tom N]

You may want to try a 300W power inverter from Sam's club (around $30). I
don't
think the generated square wave should interfere with the computer.

If you wanted to build an analog supply, all you may need to do is buy a
couple 
IC regulator chips. Depending on the current, you might need a pass
transistor
to handle it.

Tom Laird
Moline, IL.

-----Original Message-----
From: Mike Diehl [mailto:mdiehl at dominion.dyndns.org]
My laptop's battery's turned out to be
     > > > quite bad by now (I always used it from outlet, it can only
     > > > run for about 70 seconds without) and
     > > > I had to postpone the experiment because of lotsof else to
     > > > do. (mstly I am working on the utilization of a patent)
     > >
     > > Actually, I was thinking about building an old 486 motherboard and
     > > building a 5 and 12 volt powersupply that would run off the car
     > > battery.  This hardware is much cheeper than a laptop.  Would be a
     > > shame to toast a laptop doing this.

The powersupply is the challenge for me.  I'm not an analog guy. <grin>


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