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Friday 18 May 2018 at 15:10
As a utility engineer, I have a bit of experience in this area. Early in my career, I had a project to study how the 60 Hz waveform can affect clocks. Here are my takes:
1. This will have zero impact on pinball machines as all voltages for circuit boards are rectified into DC voltage.
2. Almost ...
Source: http://pinside.com/pinball/forum/topic/us-power-grid-change-60-hertz-immediate-correction-eliminated#post-4404562