Hi folks, could someone describe how I can ‘convert’ a pwm signal into an analogue voltage please?
Cheers
Woody
A PWM signal (in the flashlight world) means rapidly switching a current source on and off very rapidly to reduce the voltage and current.
By analogue, do you mean a smooth constant voltage instead of square waves from the PWM? You should look into a filtering circuit, probably one with inductors and capacitors. Search for low pass filtering circuits.
Cheers! 
Problem solved, a simple r/c network….cant believe its that simple! 
I'm pretty sure that PWM does not reduce voltage, only current.
It is a switch that turns on and off. So if is on 50% of the time and off 50% you get half power. Using a simple R/C circuit could get you up to full power unless there is also current limiting (in our cases there is) Then I would think that it is the simple fix that ryansoh3 mentioned.