10-18-2013, 11:02 PM
Yes, the glass enclosed ballasts really are much better. Here is a data sheet from Amperite, which explains how they work and shows a graph illustrating the regulating characteristic.
http://www.amperite.com/assets/Documents/Ballasts.pdf
It is really a current regulating device, which maintains a constant current to the tube filaments over a wide range of applied voltage.
http://www.amperite.com/assets/Documents/Ballasts.pdf
It is really a current regulating device, which maintains a constant current to the tube filaments over a wide range of applied voltage.