By Friedrich De Haan, Administrator

Title: By Friedrich De Haan: Innovator in High-Pressure Discharge Technology

Introduction

By Friedrich De Haan is a notable inventor based in Dommelen, Netherlands. He has made significant contributions to the field of electrical engineering, particularly in the development of high-pressure discharge lamps. With a total of 10 patents to his name, De Haan's work has had a lasting impact on lighting technology.

Latest Patents

One of his latest patents is for a high-pressure discharge lamp with a torsionally wound electrode structure. This innovative design features electrodes made from a rod of mainly tungsten, complemented by a helical winding of tungsten near the tip. The winding consists of two layers of turns, with the second layer wound with torsion, ensuring a tight fit around the substrate. This design enhances the stability and performance of the electrode rod. Another significant patent is the mains-voltage discrimination device, which adapts a load to different alternating-voltage ranges. This device utilizes a voltage-dependent resistor thermally coupled to a PTC-resistor, allowing for efficient voltage management.

Career Highlights

De Haan is associated with U.S. Philips Corporation, a leading company in the electronics and lighting industry. His work at Philips has allowed him to push the boundaries of innovation in lighting technology. His patents reflect a deep understanding of electrical systems and a commitment to improving energy efficiency.

Collaborations

Throughout his career, De Haan has collaborated with several notable individuals, including Nico V Franssen, who is now deceased, and Eise Carel Dijkmans. These collaborations have contributed to the advancement of technology in their respective fields.

Conclusion

By Friedrich De Haan's contributions to high-pressure discharge technology and his innovative patents have established him as a key figure in the field. His work continues to influence the development of efficient lighting solutions.