Everyone knows that Thomas Alva Edison invented the lightbulb; but who invented the transformer - perhaps the most important electrical machine ever developed? The ZBD model alternating-current transformer was invented in 1885 at the Ganz Works in the Austro-Hungarian Empire by three Hungarian engineers: Karoly Zipernowsky, Otto Blathy and Miksa Deri (ZBD comes from the initials of their last names). Today, transformers are everywhere, feeding various voltages into our homes and businesses. When a transformer fails in a commercial or industrial environment, that failure can disrupt a significant portion of facility operations.
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