Ryoichi Uda

Title: Ryoichi Uda: Innovator in Transformer Technology

Introduction

Ryoichi Uda is a notable inventor based in Gifu, Japan, recognized for his contributions to transformer technology. He holds three patents that showcase his innovative approach to electrical engineering and safety mechanisms in lighting systems.

Latest Patents

One of Uda's latest patents is a sign lamp lighting transformer with protective functions. This invention features an abnormality detection circuit that identifies issues related to ground faults in the secondary winding circuitry of the transformer. It also detects non-grounding faults of the transformer assembly casing and false connections of the AC power source. An interrupter circuit is designed to turn off a switch in response to any detected abnormalities, effectively interrupting the AC power supply to the transformer. When the power supply is interrupted, the switch connects to a restart circuit, allowing a charging current to flow to a capacitor. This capacitor is connected in series within a drive current path of a drive circuit, with a time delay of approximately 0.5 to 1.0 seconds determined by a delay circuit. The charging current activates a restoring circuit, which temporarily controls the interrupter circuit, allowing the switch to turn to its "on" condition only once.

Another significant patent is a ground fault protection circuit for a discharge tube lighting circuit. This invention incorporates a step-up transformer mounted on a wiring substrate, which also houses an inverter that converts commercial AC power into high-frequency power, along with a ground fault detection circuit. Lead wires extend from the secondary winding of the step-up transformer to the outside, mounted upright on the wiring substrate. Coils are placed on air-core bobbins threaded by the lead wires, with outputs from the coils directed to the ground fault detection circuit.

Career Highlights

Uda has worked with several companies throughout his career, including Sanyo Denki Seisakusho and Lecip Corporation. His experience in these organizations has contributed to his expertise in electrical engineering and innovation.

Collaborations

Uda has collaborated with notable coworkers such as Makoto Noda and Fumio Ichimiya, further enhancing his work in the field of transformer technology.

Conclusion

Ryoichi Uda's innovative patents and career achievements highlight his significant contributions to electrical engineering, particularly in transformer technology and safety mechanisms. His work continues to influence the industry and improve safety standards in lighting systems.