Syoichi Nihira

Title: Syoichi Nihira: Innovator in Charging Technology

Introduction

Syoichi Nihira is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of charging technology, holding a total of 3 patents. His work focuses on innovative solutions for charging circuits and power supply apparatuses.

Latest Patents

One of Nihira's latest patents is a charging circuit that comprises a main circuit for charging a battery and a power unit connected to an electric power source. The main circuit and the power unit are connected through a connector. The power source, transformed by a transformer located at the power unit, is supplied to the connector through a contact of a direct current relay. After alternating current is introduced to the main circuit from the power unit, the alternating current is rectified by a diode bridge. The direct current from the diode bridge is supplied to the battery through a control circuit. When the battery is charged sufficiently, the control circuit outputs an instruction signal to a diode portion of a photo-triac connected between an output terminal of the diode bridge and the control relay. When the instruction signal is transmitted to the diode portion, a triac portion of the photo-triac, which is connected between one of the input terminals of the diode bridge and the connector, outputs another instruction signal to the relay located at the power unit for opening the contact through the connector.

Another significant patent is a power supply apparatus for charging-type devices. This apparatus includes a transformer disposed in the main body of the power supply apparatus, current supply connection terminals connected to a secondary winding of the transformer, and current receiving connection terminals that can be coupled to and detached from the current supplying connection terminals. A storage battery is included in the charging-type device to be charged from the current receiving connection terminals. The power supply apparatus comprises relay contacts of a relay connected to the primary side of a primary winding of the transformer, short-circuit contacts for the relay contacts, and a relay coil for opening and closing the relay contacts. The relay coil is connected to the secondary side of the secondary winding of the transformer via control terminals to interrupt the current flowing through the transformer upon completion of battery charging and upon detachment of the charging-type device from the main body of the power supply apparatus.

Career Highlights

Syoichi Nihira has worked with prominent companies such as Hitachi, Ltd. and Tagasangyo,