LED bulbs can flicker or buzz if the current (the flow of electrical charge) doesn’t remain constant. There are a number of possible causes for this: 1. Incorrect dimming set-up This causes flickering and buzzing, and is usually down to using the wrong dimmer switch. Your home is likely to have a ‘leading edge’ dimmer. These are designed to smoothly dim old-style bulbs in a circuit with a range typically between 200W to 1,000W. This is a problem for LEDs that don’t need anything like that level of current in the circuit. For example, if you switch from...
