How to determine supply voltage?

I have an inverter board with a hard wired 50mm x 3mm CCFL. Picture is at:

formatting link
133k, 640x480) and larger version at
formatting link
(600k, 56k warning)

and schematic I drew based on it:

formatting link
(transformer coil diagram unknown but it's drawn by the pin number)

Transformer has no marking other than high voltage. I am not able to figure out the wiring diagram of the transformer without de-soldering and removing it. 2 transistors are D1616, resistors are aprox 1/16w SMD. Inductor has no marking either but it appears to have iron core. Capacitor on the primary side has marking 1J100, and one on secondary side has marking 22 and 3KV

Any idea what is the supply voltage? I think the typical inverter voltage of 12v is too much as the board looks like it may be from a small flash light type device.

TIA

Reply to
Impmon
Loading thread data ...
--
"Impmon"  wrote in message
news:ahrd33h79d3aaad9l580t03ge1j84d70uv@4ax.com...
 Click to see the full signature
Reply to
Baz

My meter only goes to 3kv AC and it was off the scale by the time I got to 4v DC. But I got a nice steady light at 5v to 6v so I guess it was designed for 4 cell flashlight. After I let it run for about 10 minutes, it was shut off nothing felt warm.

Reply to
Impmon
--
"Impmon"  wrote in message
news:912343185k19p3rkcv0fq6sgvf8qqvmmb2@4ax.com...
 Click to see the full signature
Reply to
Baz

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.