So I was on the Gen7 forum topic with Traumflug and we were both wondering why all the firmwares seem to be moving to high frequency PWM for heater control. This tends to make selection of FET's more difficult and more expensive, not to mention all the electrical noise you are injecting into the system using high power high frequency signals. So the question is what are the benefits to kHz PWM? Wby bryanandaimee - Firmware - experimental, borrowed, and future