Introduction The Reason and Use of Transformers A transformer is a device that raises or lowers voltage and is used mostly with alternating current, or ac. A transformer has no moving parts, is simple, rugged, durable, and can be up to ninety-nine percent efficient. Cities use a large amount of power, and power is based on the amount of current in electricity. A transformer works by changing the amount of voltage and current of electricity. …showed first 75 words of 1324 total…

…showed last 75 words of 1324 total…