Lesson 10
Bulbs and Drivers
Choose a replacement lamp by cap, voltage and lumens, and understand why LEDs and old dimmers often don’t get on.
Predict
You swap six 50 W mains halogen downlights for 5 W dimmable LED replacements. The dimmer that ran the halogens happily now makes them flicker at the bottom of its range.
What should you suspect first?
Choose a prediction, then select Next to see the answer.