Frank J Prines

Title: Frank J Prines: Innovator in Thyristor Technology

Introduction

Frank J Prines is a notable inventor based in Murrysville, PA (US). He holds 2 patents that showcase his contributions to electrical engineering, particularly in the field of thyristor technology. His innovative designs have significantly impacted the efficiency and reliability of electrical systems.

Latest Patents

One of Prines' latest patents is titled "Current Source Gate Drive Circuit for Simultaneous Firing of Thyristors." This invention describes a current source gate drive circuit that enables the simultaneous firing of a set of series or parallel thyristors. The circuit features two current loops, which serve as current transformer primaries, enclosed in electrically insulating tubes. The design includes current transformer cores that magnetically couple the primary current to secondary turns, allowing for effective thyristor gate driver circuits. These circuits receive and rectify AC current signals, forming a current pulse train firing signal that activates the thyristors while maintaining electrical isolation from the current loops.

Another significant patent by Prines is the "Traction Motor Current Control Apparatus." This invention discloses a direct current motor power controlling chopper apparatus that determines the operational speed of traction motors in passenger vehicles. By adjusting the ON and OFF conduction ratio of a thyristor switch device, the apparatus can control the field current and armature voltage of the motor. This innovation provides a broader range of motor speeds and enhances reliability by reducing thermal stress on the thyristor switch devices.

Career Highlights

Throughout his career, Frank J Prines has worked with prominent organizations such as the Electric Power Research Institute and Westinghouse Electric Corporation. His experience in these companies has contributed to his expertise in electrical engineering and innovation.

Collaborations

Prines has collaborated with notable individuals in the field, including Thomas C Matty and Ray S Kemerer. These collaborations have likely fostered an environment of innovation and knowledge sharing.

Conclusion

Frank J Prines is a distinguished inventor whose work in thyristor technology has made a lasting impact on electrical engineering. His patents reflect a commitment to enhancing the efficiency and reliability of electrical systems.