Question about twisties and "homemade" mult lvls.

[Lobo]

If you have a twistie, you can often dim the light by not turning the head/bottom the whole way. But do you get any longer batty life by doing this?

 

[nerdgineer]

Yes you do. You're introducing a resistance which reduces current and extends run time. However the resistor eats up a portion of the battery's energy so you will get less run time than you would with a properly regulated multi-level light which throttles the current to the LED without burning it up with extra resistance.

 

[KSH92474]

good question. Thanks for that info nerdgineer

 

[65535]

In short resitance sux.

 

[Lobo]

thanks for the answere nerdgineer. So it will safe battylife, but not so much in other words?

 

[gadget_lover]

The answer to the question depends on how you define it.

Simply put, your light will shine a LOT longer with a resistored light.

I have a 1 watt light that runs about 1.5 hours on a single CR123.

Adding a resistor to drop the power to .075 watts enables it to shine for over 24 hours. If I only need to light the immediate area the .075 is enough. In a power failure it's nice to have the option.

Daniel

 

[TORCH_BOY]

The greater the resistance the longer the runtime and the dimmer the light becomes

 

[mcmc]

To piggyback on this question, is there any easy way to take a, say cr2 twistie light, and add a 2-stage mechanism using a resistor, easily?