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Apparatus and method for controlling the speed of an induction motor in a closed-loop system
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Electrical power switching apparatus with sliding fuse drawer and interlock system
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Welding of laminations of core-plated silicon steel
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Pulse excitation torque amplifier
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Electrically insulated sleeve bearing and method of making same
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Vacuum contactor protector
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Voltage regulator with controlled current
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Mounting apparatus for disc-type semiconductors
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Automatic synchronizing control system
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Temperature measuring system for rotating machines
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Synchronizing and transfer system
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Voltage regulator for synchronous generators
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Power supply circuit to simultaneously vary frequency and amplitude in a motor speed control
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Brushless generator field ground detection system
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A.c. motor speed control system for two individual limiting circuits therein
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Time error control for generator frequency governor
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Annunciator and control system with specific application to internal combustion engines
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Annunciator and control system with specific application to internal combustion engines
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Control for synchronous motors utilizing a permanently connected resistor across the field winding
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Voltage sustainer for malfunctioning power supplies
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