Potentiometer Dimming B Type Drivers

[Jacques]

Hi Everybody.

This Website has really catapulted my knowledge which I am so grateful for. Thank you very much for this collective knowledge I have the priveledge of tapping into.

I have a question when 2 x B type drivers are dimmed simultaneaously using a potentiometer. When only 1 x driver is dimmed, a 100k pot is used. When 2 x drivers are dimmed, a 50k pot is used. This I learnt from the Build Section for Strip Lights under examples.

What size pot to use if you want to dim 3 x drivers or 4 x drivers simultaneaously?

Many Thanks in Advance.

[Shimbob]

For resistive dimming, the value of the potentiometer is 100K/n where n is the number of drivers, so 100K/3 and 100K/4.

Alternatively, get an 0-10V dimmer that can control any number of dimmers. Rapidled has one.

[Jacques]

Thank you very much for confirming exactly how it works. Much appreciated.