William H Henrich

Title: Innovations of William H. Henrich in Gaseous Discharge Lamp Technology

Introduction

William H. Henrich, an inventive mind from Sparta, TN, has made significant contributions to the field of electronic circuits, particularly focusing on gaseous discharge lamps. With a total of three patents to his name, Henrich's innovations showcase his ability to engineer solutions that enhance lamp performance and efficiency.

Latest Patents

One of Henrich's notable patents is the "High frequency ballast for gaseous discharge lamps." This invention describes an electronic frequency inverter circuit that receives electrical power at a lower frequency and energizes a load circuit, including gaseous discharge lamps, at much higher frequencies. The invention includes a logic circuit that operates first and second semiconductors alternatively in current mode control. This allows for a variable frequency in the load circuit, maintaining a consistent peak load current even when there are changes in source voltage. Additionally, a high current limit circuit is integrated to safeguard switches from excessive currents.

Another significant patent by Henrich is for a "Fluorescent lamp circuit with regulation responsive to voltage, current." This innovation introduces a 'soft' start-up circuit that applies an inter-electrode voltage limited to a peak value, ensuring the lamp does not ignite before the cathode reaches the optimum temperature for operation. Once the cathode is heated, the lamp voltage is ramped up in a pulsed manner to successfully initiate lamp operation, allowing for potential energy savings by turning off the lamp filaments once the lamp is lit.

Career Highlights

William H. Henrich has been associated with Thomas Industries, Inc., where he has applied his expertise in developing advanced circuit technologies. His work focuses on optimizing the performance and efficiency of fluorescent and gaseous discharge lamps, emphasizing energy conservation while ensuring reliable operation.

Collaborations

Throughout his career, Henrich has collaborated with talented colleagues such as Thomas E. Dean and David M. Fischer. These collaborations have likely played a crucial role in refining his inventions and expanding the impact of his work within the industry.

Conclusion

William H. Henrich's contributions to the field of electronics, particularly through his patents on gaseous discharge lamp technologies, highlight his innovative spirit and commitment to enhancing energy efficiency. His work at Thomas Industries, Inc. demonstrates the importance of collaboration in advancing technological solutions that benefit various applications in lighting technology. Henrich's inventions not only showcase his technical expertise but also serve as a foundation for future developments in this critical industry.