buckpuck alternative

[KuroChou]

The sabers I've built keep a consistent 1" ID throughout.
Understandably, that makes for some interesting cramming, where flexibility is essential.
My thought process here, is a physically flexible alternative to the rigid buckpuck, that also happens to be much more precise and customizable.

The LM137t is an interesting little ic that resembles a typical transistor, that when used in two simple little circuits, allows for very specific voltage and current regulation, regardless of a variable source (i.e. rechargable batteries).

For voltage:


For current (up to 1.5A with this model):


http://www.reuk.co.uk/LM317-Current-Calculator.htm
http://www.reuk.co.uk/Using-The-LM31...te-Voltage.htm

Wouldn't using one of each, in series, allow for a constant power supply custom tuned to your exact LED?

[cardcollector]

There are many places where you can make a driver like a buckpuck for about a dollar. (Instructables is one...)

However, in lightsaber use they aren't as applicable because they are weaker and take a looooong time to make.