Ray Andraka wrote:

When my dimmer does go, or I add more lighting to the panel, I'll
probably opt for one of the pulse width modulated ones (those are
much more complicated than the piper pass transistor, but they also
dissipate very little power).

The next step in the evolution is to get rid of all those incandescant
bulbs and replace them with LEDs. Lower power consumption for the same
light output, and they never burn out.