Company Filing History:
Years Active: 1978-1984
Title: The Innovations of Charles R. Crockett
Introduction
Charles R. Crockett is a notable inventor based in Arlington, TX (US). He has made significant contributions to the field of electrical engineering, particularly in the development of motor control technologies. With a total of 4 patents to his name, Crockett's work has had a lasting impact on the industry.
Latest Patents
Crockett's latest patents include a "Circuit and method for controlling speed of an alternating current motor." This invention discloses a method for controlling the speed of an alternating current motor by utilizing a direct current reference signal. The signal's magnitude is proportional to the motor's speed and is coupled to one input of a voltage comparator. A control pulse is generated at the beginning of each half cycle of the alternating current source, which is used to periodically discharge a timing capacitor. The voltage on the timing capacitor is then applied to a second input of the voltage comparator. When the timing capacitor voltage equals or exceeds the direct current reference signal, power is applied to the motor.
Another significant patent is the "Optically coupled solid state relay." This circuit utilizes a light-emitting diode input to trigger a photosensitive transistor. A trim resistor in the base of the photosensitive transistor adjusts the circuit's sensitivity. The photosensitive transistor, along with other circuitry, controls a silicon-controlled rectifier that provides gate drive to a triac. Voltage limiting circuitry ensures that the solid state relay switches only during specific periods within a selected range of the zero crossing of the line voltage.
Career Highlights
Crockett has been associated with Teccor Electronics, LP, where he has contributed to various innovative projects. His expertise in electrical engineering and motor control has positioned him as a valuable asset to the company.
Collaborations
Crockett has worked alongside talented individuals such as Jerry W. Swafford and Jerry L. Walker. Their collaborative efforts have further advanced the technologies in which they specialize.
Conclusion
Charles R. Crockett's contributions to electrical engineering and motor control technologies are noteworthy. His innovative patents reflect his dedication to advancing the field and improving the functionality of electrical systems.