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User Info	An Old Game Is Back Again; entered at 2023-09-13 19:23:48
Ee4fire Posts: 1262 Registered: 2011-03-24 Washington, DC	Karl, Back in the 90's. when the compact fluorescent bulbs were sold as the big money saving products to replace the incandescent bulbs and save energy. Power companies offered huge rebates to install them. The cheap CF retrofit kits included LPF ballasts/transformers and people ended up not saving money, because the ballasts on single phase circuits were consuming more power. Sometimes even tripping circuit breakers. Power factor is very important in large industrial power systems. I have a large matter now where an industrial facility is blaming a utility for "bad" power causing equipment failure, when it was their own facility's LPF causing the problem. My other favorite one is the Tesla self-running generator. Hook an electric motor up to a generator and plug the motor in and run the generator. The generator starts producing power. Then unplug the motor and the generator miraculously keeps the motor running and miraculously you have free power. Similar issue happened when computer and electronic power supplies went to solid state switching power supplies and dropped the transformer and rectifier AC to DC power supplies. They were used in computers, electronic ballasts, TV's etc. The total harmonic distortion (THD) for these power supplies were terrible and caused transformers and neutral conductors to overheat and burn up and/or catch fire because the 3rd harmonics would add together instead of cancelling each other out. The old saying is if it too good to be true, it probably is. 2023-09-13 19:23:48