Definition

• Rectifier.  A machine for converting alternating current (prominently used in America) to direct current. Direct current is necessary in all electroforming and electroplating operations.

  excerpted with permission from

  An Encyclopedia of Coin and Medal Technology

  For Artists, Makers, Collectors and Curators

  COMPILED AND WRITTEN BY D. WAYNE JOHNSON

  Roger W. Burdette, Editor

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