Accession Number : ADD013102

Title :   Pulse Width Modulated Power Amplifier for Direct Current Motor Control.

Descriptive Note : Patent, Filed 26 Sep 78, patented 20 May 80,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Coleman,Randolph D

Report Date : 20 May 1980

Pagination or Media Count : 7

Abstract : A solid state electronic circuit for controlling a reversible direct current motor from a voltage source such that it may be rotated in either direction. The reversible direct current motor is connected into a bridge circuit with semiconductor switching elements which provide that the full supply voltage is available for starting in either direction. A pair of comparators receives input signals from a triangular wave generator and a signal source and in conjunction with a cross-fire protection circuit generates the drive pulses which control the semiconductor switching elements.

Descriptors :   *PATENTS, *ELECTRIC BRIDGES, *COMPARATORS, *SEMICONDUCTOR DEVICES, *SOLID STATE ELECTRONICS, *SWITCHING, CIRCUITS, SOURCES, VOLTAGE, DIRECT CURRENT, MOTORS, INPUT, SIGNALS, REVERSIBLE

Subject Categories : Electrical and Electronic Equipment
      Electric Power Production and Distribution

Distribution Statement : APPROVED FOR PUBLIC RELEASE