You've got the concept correct. The vast majority of VV/VW regulated mods use buck boost circuitry and pulse wave modulation to create higher voltage than the fixed 3.7 volts of our high drain batteries. They accomplish this by sending extremely short pulses of energy to the heating coil many times a second. The resulting output will be the mean of what the user sets, however the wave "spikes" will be a much higher value in both voltage and amps drawn from the battery. Depending upon the frequency (Hz) of these spikes will determine how smooth the vape will be.
The devices which use lower frequency (33.3 Hz) appear to fire hotter and less smooth IMHO. Higher frequency devices are less hot and have a smoother vape.
Haha thank baditude! Was trying to figure out the best way to explain PWM and frequency but I'm so long winded it would have ended up being a 3 page electrical engineering essay- rotflmao
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