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

W3JDR wrote:
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.

Where is the current limiting going to come from?

Where is the current limiting going to come from?
------------------------

The first question that has to be asked in reply is "What does the current
need to be limited to".

The current will automatically be limited to some level by virtue of the
small DC-AC inverter's limited drive capability and the small wall
transformer's limited output capability. 1st order current limiting can be
achieved just by picking the appropriate parts for these two units. However
if a lower current limit is needed then there's a simple solution available
called a "resistor".

Joe
W3JDR