AB power pack
AB power pack[ā¦bē ′pau̇·ər ‚pak]
Assembly in a single unit of the A battery and B battery for a battery-operated vacuum-tube circuit.
Unit that supplies the necessary A and B direct-current voltages from an alternating-current source of power.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.