As per title, what are the pros and cons of running a higher CC and PWMing it, vs running a lower CC and keeping it on? Efficiencies, tint shifts, ??
I'm looking at running XM-Ls at up to 4Amp short bursts, but the majority of the time running it at say 1.5Amp (depending on my test results); I realise there are a lot of ways to skin this feline, just wondering what peoples experienced views are, should I just set the CC to 4Amp and do a fast PWM to reduce it down, or re-set the CC each time I want to incease/decrease by a large amount?
With my planned setup I can have 32 hardware CC steps between 0Amp and 4Amp (actually slightly less 4Amp, but anyway...). I need to vary the light output at all times, so will be using PWM to some degree anyway, should I set to 1.5Amp (about 12/32 output) and PWM it slightly, needing to change the settings before boosting up to 4Amp (32/32), or should I run it "full on" and greatly reduce the duty cycle of the PWM (ie 37.5% duty cycle of 4Amp ~= 1.5Amp)
Any thoughts? PWM frequency will be at least 160Hz if I use the software method, or may well be in the 39kHz range if I use hardware PWM.