Pulse Width Modulated Power Amplifier for Direct Current Motor Control.
Patent, Filed 26 Sep 78, patented 20 May 80,
DEPARTMENT OF THE NAVY WASHINGTON DC
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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.
- Electrical and Electronic Equipment
- Electric Power Production and Distribution