Back to basics. This is the way I thought they worked. The ballast provides a high voltage to get the mercury to ionize and then the voltage drops and the filaments on each side maintain the glow. However, my magnifying lamp wasn't working so I delved into what the problem might be. I made a schematic but now my concepts seem to be wrong. I'm confused.
Turns out the tube wasn't getting properly seated.
Turns out the tube wasn't getting properly seated.
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