Company Filing History:
2 out of 51,886 
1 out of 16,076 Years Active: 1977-1982
Title: Marvin W. Smith: Innovator in Voltage Regulation and Power Supply Systems
Introduction
Marvin W. Smith is a notable inventor based in Roanoke, VA (US), recognized for his contributions to voltage regulation and power supply systems. He holds a total of 3 patents, showcasing his innovative spirit and technical expertise in electrical engineering.
Latest Patents
One of Marvin's latest patents is a voltage regulating system. This system employs a triac for controlling the power supplied to a load from an alternating current (a.c.) voltage source. It utilizes an oscillator as a phase controller to initiate a first switching pulse in each half-cycle of the voltage source. A feedback loop responsive to the first pulse in each half-cycle increases the output frequency of the oscillator, providing pulse train firing of the triac. Additionally, an extra circuit defines a 'window' that establishes a period within each half-cycle of the a.c. source during which the delivery of switching pulses is prohibited.
Another significant patent is the actively switched damping circuit. This invention pertains to an inverter type power supply that includes an actively switched damping circuit for limiting voltage transients in the inverter circuitry. The damping is achieved by switching an energy-absorbing element into parallel circuit relationship with the inverter transformer during periods when transients typically occur. The energy absorbed during these transients is either dissipated or stored and later returned to the inverter transformer, enhancing circuit efficiency.
Career Highlights
Throughout his career, Marvin W. Smith has worked with prominent organizations, including General Electric Company and the United States Navy. His experience in these companies has allowed him to develop and refine his innovative ideas in the field of electrical engineering.
Collaborations
Marvin has collaborated with notable individuals in his field, including Donald W. Perkins and Georges R. Lezan. These collaborations have contributed to the advancement of technology in voltage regulation and power supply systems.
Conclusion
Marvin W. Smith's contributions to the field of electrical engineering through his patents and collaborations highlight his innovative spirit and technical prowess. His work continues to influence advancements in voltage regulation and power supply systems.
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