Here's a$15 turnkey solution:

A $10 12VDC-to-115VAC power inverter:
(http://www.harborfreight.com/cpi/cta...emnumber=92707)

+ a $5 12VAC wall transformer:
(http://www.jameco.com/webapp/wcs/sto...&p a=211271PS)

..

Joe
W3JDR


"Jim" wrote in message
...
I have a special ozone generating lamp that requires approx 12 VAC at
330 MA (will have to be current limited, as it strikes a gaseous arc
and too much current will melt the filaments). I would like to use it
in an automotive application.

What would you suggest for circuitry to make the conversion?
Frequency is not critical, but some form of current limiting is.

Jim