Takeshi Morinaga

Title: Innovations of Takeshi Morinaga

Introduction

Takeshi Morinaga is a notable inventor based in Kariya, Japan. He has made significant contributions to the field of electronics, particularly in amplifier circuits and power supply apparatuses. With a total of 2 patents, Morinaga's work reflects his commitment to advancing technology.

Latest Patents

One of Morinaga's latest patents is an amplifier circuit that includes a main amplifier and an auxiliary circuit designed to improve the slew rate of the main amplifier. The main amplifier consists of a one-stage CMOS amplifier that amplifies the voltage difference between two input signals. It outputs an output signal corresponding to the voltage difference of the input signals from its output terminals. The auxiliary circuit controls an auxiliary bias current flowing through the output terminals based on the voltage difference of the input signals. It interrupts the auxiliary bias current at a predetermined timing before settling is complete. This innovative scheme enhances the slew rate and enables high-speed operation while reducing errors due to mismatches between the main amplifier and the auxiliary circuit, resulting in a high-accuracy output signal.

Another significant patent by Morinaga is related to a power supply apparatus. In this invention, power is transmitted from an input terminal to an output terminal. The transmitted power is controlled to ensure that the output voltage detected in a predetermined ratio equals a reference voltage. A reduction signal is generated when the output voltage falls below a threshold. The apparatus determines the presence or absence of an abnormality in a capacitance connected to the output terminal or a load current in a load connected to the output terminal. This is achieved by adjusting at least one of the detection ratio and the reference voltage, allowing the output voltage to transition from a target voltage higher than the threshold to a middle voltage lower than the threshold during a specified time period.

Career Highlights

Takeshi Morinaga is currently employed at Denso Corporation, where he continues to innovate and contribute to the field of electronics. His work has garnered attention for its practical applications and technological advancements.

Collaborations

Morinaga has collaborated with notable coworkers, including Mutsuya Motojima and Shogo Kawahara. Their combined expertise has contributed to the success of various projects within the company.

Conclusion

Takeshi Morinaga's contributions to amplifier circuits and power supply apparatuses demonstrate his innovative spirit and dedication