0-10 volts is not 0-10

[zbang]

Pulse Width Modulation- a way of controlling the overall power delivered by turning the current on/off very quickly, with the width and frewquency of the pulses averaging (well, integrating) to the desired power.

See https://en.wikipedia.org/wiki/Pulse-width_modulation

 

[Ponchik]

Pulse Width Modulation- a way of controlling the overall power delivered by turning the current on/off very quickly, with the width and frewquency of the pulses averaging (well, integrating) to the desired power.

See https://en.wikipedia.org/wiki/Pulse-width_modulation

Awesome thank you.

 

[n1ist]

PWM can cause flicker at low levels, so some high end dimmers will do PWM down to a certain level and change over to adjusting the current from that level down to off.
/mike

 

[jedoll]

What is PWM'ing the current or combination?

PWM means "Pulse Width Modulation". To get brightness between 0 and 100%, lights are turned on and off rapidly with a square wave. Brightness is proportional to the "on" portion of the square wave's duty cycle, i.e., its pulse width.