It would work, but it would be better to drop the voltage some. There are several ways to do this. Are you planning on using 3 CR123s? If so a simple regulator set for 9V would be good.
A LM317 is common as dirt (Radio Shack carries them, as well as everyone else).
This part will get hot, so attach the metal tab to a largish chunk of metal for a heat sink.
Figure R2 as two 1.5KΩ resistors in series with each other. This will create 9.06V on the output. Not shown are two 0.1µF capacitors, and maybe a 220µF on the input if the power supply is more than 6" away. This little chip makes a dandy variable power supply if you ever want to expand your test equipment, just use a variable pot for R2.
I'm fighting the urge to buy one of these power pucks and LEDs. Have I mentioned my parts box overflowith?
A LM317 is common as dirt (Radio Shack carries them, as well as everyone else).
This part will get hot, so attach the metal tab to a largish chunk of metal for a heat sink.
Figure R2 as two 1.5KΩ resistors in series with each other. This will create 9.06V on the output. Not shown are two 0.1µF capacitors, and maybe a 220µF on the input if the power supply is more than 6" away. This little chip makes a dandy variable power supply if you ever want to expand your test equipment, just use a variable pot for R2.
I'm fighting the urge to buy one of these power pucks and LEDs. Have I mentioned my parts box overflowith?