A "selective" dimmer Hi! I need some help to solve a problem I can’t get my head around. I would be very grateful If someone could help me to get started. I need a circuit for a dimmer connected to two light sources. When the rate of change of the current is within a pre-determined value, I want the system to behave as if the two light sources where just parallel connected to a power supply through the dimmer. => Brighten and dim equally. But when the rate of change of the current in the “positive” direction passes this boundary I want the current to be shifted to make for example Light source 1 to shine brighter than Light source 2. In the same way brightness is shifted to Light source 2 if the rate of change is passed the boundary value in the negative direction. To make it clear… If I slowly twist the dimmer in any direction both lights turns equally brighter or dimmer. But if I make a sudden move in one direction, the brightness is shifted towards the corresponding light. I am pretty sure it can be done with Inductors, but a solid state semi-conductor circuit is preferred.