Frankfort, NY
Quoted from undrdog:Coming from the transformer.
Use to work on old yard lights at gas stations. The ballast would hum very loud when it was time to replace them. They were identical to the transformers in pinball machines.
(Topic ID: 260300)
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Quoted from ForceFlow:I'm not sure that I would equate the two things--they perform different functions
A Transformer transforms amperage and voltages up and down.
A ballast supplies a stable power supply.
The ballast I used to work on for metal Halides and HPS where big with wound wire as well. When they went bad they would hum.
48395808-6048-4706-97C4-CF01F24C7769 (resized).jpegQuoted from undrdog:I’ll try tightening the screws & see if that does it. Maybe I’ll get lucky. Stay tuned...
How did that work for you?
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