1938-1939 F15T8 preheat ballast with magnetic starter switch « on: August 01, 2022, 07:31:06 PM » Author: WorldwideHIDCollectorUSA
In case you were wondering about how fluorescent tubes behave when starting on early preheat ballasts with magnetic starter switches, here is a video that shows the startup: https://youtube.com/shorts/ohoL6qTifiI?feature=share
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Desire to collect various light bulbs (especially HID), control gear, and fixtures from around the world.

DISCLAIMER: THE EXPERIMENTS THAT I CONDUCT INVOLVING UNUSUAL LAMP/BALLAST COMBINATIONS SHOULD NOT BE ATTEMPTED UNLESS YOU HAVE THE PROPER KNOWLEDGE. I AM NOT RESPONSIBLE FOR ANY INJURIES.