Wrong term. A DC/DC converter is what he means. You can get an automobile
power supply brick for most laptops and they are far more efficient than an
inverter and wall wart.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

"krj" wrote in message
...
Sea Jay wrote:
Better to use a step up DC transformer - much more efficient and
compact!!

A DC stepup transformer? If transformers worked with DC, Edison would have
won instead of Westinghouse.
krj