questions about powering the heater in a tube coil

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Original poster: "Tom Stathes by way of Terry Fritz <twftesla-at-qwest-dot-net>" <newphreak_16-at-yahoo-dot-com>

Hello all,

I have a 12v regulated DC power supply that I would
like to use to power the heaters in my tube coil.  Can
I use this, or must i use a 12v AC transformer?

Thanks
--Tom