Vintage Electric Charger (Stock Footage)

Vintage Electric Charger (Stock Footage)

Man turns on, step by step, an old electrical charger device, with moving iron ammeter and metal needle on scale grid. An ammeter is a measuring instrument used to measure the electric current in a circuit. Electric currents are measured in amperes (A) hence the name. Moving iron ammeters use a piece of iron which moves when acted upon by the electromagnetic force of a fixed coil of wire.
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