In article ,
Greg wrote:
Yes, I did forget the link:
http://www.innovatronix.com/cgi-bin/...alog/index.asp

These inverters are meant to power photo strobes and apparently are powered
from a car battery, though they don't specifically say so.

I guess the strobes need an especially clean electrical source.

Not strobes, but the incandescent floodlamps. Some of them last under
a hundred hours rated running time and are real picky about the voltage
they run at.

I'm not interested necessarily in the inverters but I was curious about sine
wave vs switching power supplies. I guess a switching supply, powered from
household AC, would be sufficient to power 12VDC radios?

Not if you want to receive anything. You've got basically the same
circuit as a 50-250 watt medium wave transmitter feeding your radio
through the power supply wires via the rectifier and filter.
It's got to be a really GOOD filter. And any consumer grade power
supply isn't going to be that good.

Mark Zenier Washington State resident