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 AC, DC Voltage and Bulbs?

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Arnak Posted - May 14 2009 : 12:55:14 PM
Hi Folks,

I just wondered could you use a 12v bulb normally on a dc power supply on a 12v ac supply?

The reason why I ask is that I have some dolls house lights and they run on a 12v ac transformer but I need a higher wattage bulb as a backlight to a stained glass window.

Of course, normal 12v bulbs are dc not ac so would it work and why not if it wouldn't?

Thanks for any advice.

Arnak
4   L A T E S T    R E P L I E S    (Newest First)
Arnak Posted - May 15 2009 : 04:57:53 AM
Hi Audioguru,

Great, thanks for the help!

Arnak
audioguru Posted - May 14 2009 : 7:35:36 PM
Yes you can use AC instead of DC and the light will look the same.
Arnak Posted - May 14 2009 : 6:01:29 PM
Hi Audioguru,

So does that mean that it would be ok to use the ac instead of dc?

Sorry for my ignorance.

Thanks,

Arnak
audioguru Posted - May 14 2009 : 2:59:42 PM
12VAC provides exactly the same amount of average power to a resistance like an incandescent light bulb as 12VDC.

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