Outdoor Radio Hand Generator from 1951

With the establishment of the Japan Defense Agency in 1954, the precursor of the Japan Ministry of Defense, there was a movement to produce defense electronics domestically. We developed this generator for portable U.S. military radios. We manufactured a majority of the emergency radio power supplies mandated for use in lifeboats in case of shipwreck,

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30 kVA EMG 3-Engine Uninterruptible Power Supply from 1955

An uninterruptible power supply is one of Sanyo Denki’s flagship products. It contributes to the communications industry as a power backup, but the power supply made by Sanyo Denki, the first of its kind in Japan, was indeed born for the telephone in the communications industry. On August 1st, 1952, the business of the Ministry

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Tape winder from 1965

In the 1960s, our flagship products were power supplies for communication applications, and these demonstrated robust growth primarily centered on permanent power supply systems, wind-up generators and power supply systems for signal position meters. Demand also increased rapidly as a result of sales of rotating devices such as servo motors and resolvers beginning to take

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Motor Generator 32 kW 1983-1992

In the history of computers, the computers from the late 1960s to the 1970s (known as the third generation of computers) used IC and LSI and achieved rapid progress through electronics. At the same time, to avoid damage to logical elements and other components due to sudden power voltage fluctuations or penetration of lightning surges,

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Power Supply Systems for a Distributed Power Supply 1987 to 2000

In the 1980s, information communication services were developing by leaps and bounds, with conventional services focused on analog telephones giving way to multimedia communications based around digital technologies. Around this time, Japanese telecommunications company NTT (Nippon Telegraph and Telephone Corporation) developed and began installing the D70 digital switch for both digital and analog subscriber lines.

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Large Capacity Uninterruptible Power Supply Systems 1985-2005

The 1980s was the era in which the industrial world first began rushing towards an information society. Around that time, Nippon Telegraph and Telephone Public Corporation (NTTPC) started bringing in uninterruptible power supply systems (UPS) to improve the reliability of the increasingly essential communications and data. In those days, NTTPC was a significant user of

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