Company Filing History:
Years Active: 1977-1981
Title: Herman Adrianus Smulders: Innovator in Electric Devices
Introduction
Herman Adrianus Smulders is a notable inventor based in Eindhoven, Netherlands. He has made significant contributions to the field of electric devices, holding a total of 4 patents. His innovative work focuses on enhancing the functionality and efficiency of electric switches and discharge lamps.
Latest Patents
One of Smulders' latest patents is an electric device equipped with a switch designed as a discharge tube. This invention features at least two main electrodes and a reversible hydrogen getter. The discharge tube contains a rare gas, allowing the current flow in the conducting state to be primarily ensured by that gas. The non-conducting stage can be achieved by heating the getter, which increases the hydrogen pressure in the discharge tube, extinguishing the discharge. The heating of the getter is preferably accomplished by the heat generated by the current between the main electrodes, resulting in a self-extinguishing breakdown element.
Another significant patent involves an arrangement for starting and operating a discharge lamp with cold electrodes. This arrangement includes a starter circuit consisting of a series of at least a capacitor and a controlled semiconductor switching element with a bidirectional thyristor characteristic. A resistor with a positive temperature coefficient is connected in series with the capacitor and the controlled semiconductor switching element. This design minimizes radio interference when the lamp fails to ignite, thanks to the high-ohmic value of the PTC resistor. Additionally, it allows for the use of a controlled semiconductor switching element with a low blocking voltage, ensuring that normal lamp starting is minimally affected.
Career Highlights
Herman Adrianus Smulders is associated with U.S. Philips Corporation, where he has contributed to various innovative projects. His work has significantly impacted the development of electric devices and lighting solutions.
Collaborations
Throughout his career, Smulders has collaborated with notable colleagues, including Hubertus M Chermin and Meerten Luursema. These collaborations have fostered a creative environment that has led to advancements in their respective fields.
Conclusion
Herman Adrianus Smulders is a distinguished inventor whose work in electric devices has led to several important patents. His innovative contributions continue to influence the industry, showcasing the importance of creativity and collaboration in technological advancements.