0-10V dc Mosfets to drive 12v RGB leds? kinda stuck here

Other Hardware General Electronics
1

Hello, I am working on a "RGB light controller" that interfaces with the "g! home automation" system.

The starting point: g! software, is already running on 10" tablet, and has 3 sliders, to control three 0-10vDC power supplies.

So what i want, is to use the existing 0-10VDC variable supply, controlled, by g! , to drive some RGB led strips.

Ive had success using mosfets, with an arduino, and the 0-5v DC it will supply.... But how would i use a mosfet for the 0-10Vdc i have to work with?

2

Need more info on the RGB strips to start with.

This one for example has all Rs, Gs, Bs controlled together.

So + of supply to + of strip,

  • of strip to Logic Level, Low Rds, N-channel MOSFET to switch connection to Gnd for each color. Make that a PWM output to control the brightness.

Others are 5V strips and have control chip per RGB LED to make them individually controllable.
Example

3

Driving LEDs through a varying voltage is not a good idea. This is because you need a certain voltage to even start to turn on an LED so all that adjustment is dead space.
The best way is to use PWM.