What Is a Light Ballast? | Bryant Electric Service
GE UltraMax T8 Fluorescent Light Ballast *COME IN SETS OF 5* | eBay
Electrical ballast - Wikipedia
Some measurements on a fluorescent tube and its magnetic ballast
Choosing the Right Fluorescent Ballast — 1000Bulbs Blog
GE UltraMax Proline Electronic Ballast, 120/277 Volt Instant Start Ballast, Low Power Ballast Factor, Ballast for Fluorescent Light (3) or (2) Lamp T8, Compatible with F32T8/WM and F17T8 - Amazon.com