Sorry for the confusion, 1.25mm csa not length. It doesn't happen often, but I was typing faster than my brain was working!
Eh4- that was what I was thinking when I posted the original question, the csa is the same it just didn't seem right that something so thin could handle the same...
Hi folks, it may be a bit of a dumb question, but will a length of 25mm x0.05mm copper tape have the same current carrying capacity as a 1.25mm2 length of copper wire?
As the battery voltage is close to the Vf of the leds, a linear reg would be ideal. The amc based circuits are out because the battery voltage is too high (max 6v).
It may seem like over-kill, but an Lflex driver from Taskled might be just what you are looking for: made in USA, strobe modes...
This might work for you: http://www.lighthound.com/HDS-EDC-LED-Flashlight-Spring-ONLY-for-2-x-123-Battery-Case-or-1-x-17670-Battery-Case_p_615.html
Im sure KD and DX sell springs as well.
Wolf do make an led version that looks almost identical to your current torch (minus the crack in the battery housing!). It might be possible to swap out the stock led for a neutral/warmer tint as Vickers suggested...
It amazes me that you firefighters dont get better torches as standard :shakehead
The change in tint seems to be less noticeable with pwm drivers, but at low low levels there is the issue of flicker. Seems that for every solution there is another problem to overcome:(
http://www.led-tech.de/en/High-Power-Supply-c_106_0.html
It is not listed as LLC07N on the led-tech site and the datasheet is for another optic, but it is certainly the optic in question!