Questions about driver terminology.

Ok, I read a post earlier, and someone mentioned a linear regulated driver. I realized I had some things confused. I assumed fully regulated in actuality meant "constant brightness" and had no PWM. While it is correct, that it has no PWM, a linear regulated driver, would be a driver that had no PWM, but also decreased in brightness as the battery is drained... right? If so, then what is the kind of regulated driver that offers a continuous level of brightness over time, but no PWM.

Does fully regulated really mean just "No PWM?"

If there's a FAQ that answers my idiot question without someone having to hold my hand through basic flashlight terminology, that would be a great. I know this sounds like a stupid question.

There's, buck, boost, buck-boost and linear drivers, that's what is important. Always the cells play a role for example the higher the current with a 7135 the lower the regulation, that regulation can be flat at 2A on a UR18650FM cell which has a nice discharge curve.

Thanks for the info guys, this lead me to further reading. I hope I'm understanding it a little better now.

Ok question , with convoy C8 models you have different current outputs, 2.1A and 2.8A , what’s the purpose of this when either model outputs 700Lumens, or is this just FT making an error, because the Roche F12 actually increases in output with the higher output current (supposedly)

Would it then be better to order the 2.1A Convoy C8 instead of the 2.8A version and achieve better run times ?

I found - and still find - this site to be extremely helpful:

http://flashlightwiki.com/Driver

greetings

Thanks