Shigeru Tanaka

Title: Shigeru Tanaka: Innovator in Vehicle Voltage Regulation

Introduction

Shigeru Tanaka is a notable inventor based in Kariya, Japan. He has made significant contributions to the field of vehicle voltage regulation, holding a total of five patents. His work focuses on enhancing the efficiency and reliability of vehicle electrical systems.

Latest Patents

One of his latest patents is a voltage regulator for vehicle alternators. This invention sets the voltage of a terminal at a high impedance to a fixed voltage of 2.5 V using a constant current source and a resistor. It detects whether the terminal voltage is within a specific range of 3.5 V to 5.5 V using comparators and a NOR circuit. A control signal from an ECU activates a switching transistor to adjust the divided voltage, ensuring that the alternator generates high voltage only when the terminal voltage is at the special voltage. In cases of communication line disconnection or grounding, the terminal voltage remains normal, preventing abnormal voltage from affecting the battery.

Another significant patent is a battery voltage regulator for vehicle charging systems. This regulator includes a voltage control circuit that manages the battery terminal voltage. It features an external terminal connected to the battery's positive terminal through a charge lamp and ignition switch. The design incorporates a charge lamp drive circuit that responds to the alternator's output, energizing the charge lamp. Additionally, a malfunction-preventing circuit safeguards the power supply circuit from disturbances like leakage current. The regulator can also include a backup circuit that ensures continuous operational power, maintaining the battery terminal voltage at a desired level even during potential disruptions.

Career Highlights

Shigeru Tanaka has worked with prominent companies in the automotive industry, including Nippondenso Co., Ltd. and Toyota Industries Corporation. His experience in these organizations has contributed to his expertise in vehicle electrical systems and innovations in voltage regulation.

Collaborations

Throughout his career, Tanaka has collaborated with notable colleagues such as Katsutaro Iwaki and Hajime Matsuhashi. Their combined efforts have further advanced the field of vehicle technology.

Conclusion

Shigeru Tanaka's contributions to vehicle voltage regulation through his innovative patents have significantly impacted the automotive industry. His work continues to enhance the reliability and efficiency of vehicle electrical systems.