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How to measure coil inductance

How to measure the inductance of the coil It will not work for free. Measuring inductance is not such an easy task, and it cannot be solved with a DC multimeter alone. Several approaches are possible. First things first, inductance ...

who invented the light bulb

who invented the light bulb The one who previously patented. in general, the first light bulb and a battery for it were invented in Babylonia in ancient times ... those inventions that we know about are just scientific plagiarism! ...