All fluorescent lamps require a lamp ballast to operate. All lamp ballasts hum to some slight diploma.

lamp ballasts for 48 inch, 72 inch and ninety six inch slimline lamps are sound rated C and D and therefore are the the very least quiet. Both equally magnetic and electronic fluorescent lamp ballasts give off a slight humming noise; harmonics would be the technical expression.

Slimline lamp ballasts must only be employed in industrial/commercial applications in which sounds just isn’t a difficulty. Power conserving lamp ballasts, household lamp ballasts, and strong point out (electronic) lamp ballasts are audio rated A.

By design and style an digital lamp ballast has lowered harmonics and therefore the hum is much less visible than when applying a magnetic lamp ballast. Chances are you’ll hear them in a very tranquil area. On the other hand, in most programs, noise from seem rated A lamp ballasts is roofed up by the common volume of ambient sound in the normal room.

A loose magnetic lamp ballast could be the reason for lamp ballast hum. Check that lamp ballast mounting screws are tight. Should the hum is louder than common the lamp ballast may have being replaced.

Fluorescent lighting works by using transformers to raise the voltage towards the position which makes the fixture gentle up. depending on the particular variety of fixture, the transformer might be kind of noisy.

The previous business design fixtures we used to see in warehouses, and educational institutions experienced massive transformers, and since they aged, they could make an awful racket. the latest of your new use solid-state electronic circuitry to handle the transformer, includeing some that change the frequency to your greater vary, to lower the audible hum.