Tronic Magnetic Ballast 20W for Fluorescent Lights

Our review

This Tronic magnetic ballast is a 20-watt choke for fluorescent lighting, built around a coil of copper wire. As current flows through the coil, the magnetic field it creates restricts how much electricity reaches the tube, so the lamp receives only what it needs to strike and stay lit. It suits anyone maintaining or repairing a fluorescent fixture that calls for a 20W magnetic ballast, particularly in settings where a simple, proven choke is preferred over electronic alternatives. Before buying, confirm your fixture and tube are rated for a 20W magnetic ballast, since wattage and ballast type must match. Magnetic chokes tend to be heavier and may hum slightly compared with electronic ballasts, but they are generally robust and straightforward. Check the old ballast's markings and wiring layout first. This one is available on Sokonia.