I've got some downlights in my kitchen that have an E27 socket and had E27 fluorescent bulbs in them: I generally dislike the light these put out and was looking to replace them with halogen spots. ...
In one room of the apartment we rent, there's recessed 12v MR16 halogen lighting. There are 3 different circuits with dimmers. I noticed that two of the bulbs were humming loudly even when dimmed all ...