Why some large lamps make the loud click and buzzing sound when turned on ?

Question

title

In: Technology

Answer 1

If they’re fluorescent, it’s an old style ballast, a bimetal strip that helps them start. Fluorescent tubes need a lot of power to get going, then very little once they’re lit.

[This video ](https://youtu.be/hjphxq9nUrA?si=ci3zrZqpfF3VjAb6) by Big Clive explains how both the old ones and new solid state ones work.