Whatever Happened to the Tunnel Diode?
Article Abstract:
While the discovery of the tunnel diode in 1957 promised to one day replace the transistor, the tunnel diode is used today only in radar, some microwave applications, and research. The diode has a negative resistance that should make it ideal for amplifiers and oscillators and can produce virtually instantaneous surges of current for high frequency applications. Concurrent advances in electronic technology kept the tunnel diode from being widely incorporated in new electronic devices of the 1960s.
Publication Name: IEEE Spectrum
Subject: Engineering and manufacturing industries
ISSN: 0018-9235
Year: 1984
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Whatever Happened to Ocean Thermal?
Article Abstract:
The idea of converting the temperature differential between surface water and deeper water in the ocean has been around for many years, but only recently has been successfully applied. Converting ocean-thermal differences into electric energy uses either a closed-cycle or an open-cycle scheme. Before a commercial plant can begin operation, several technical problems must be solved.
Publication Name: IEEE Spectrum
Subject: Engineering and manufacturing industries
ISSN: 0018-9235
Year: 1984
User Contributions:
Comment about this article or add new information about this topic:
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