IEE Review
Volume 41, Issue 3, May 1995
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Volume 41, Issue 3
May 1995
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- Source: IEE Review, Volume 41, Issue 3, page: 82 –82
- DOI: 10.1049/ir:19950301
- Type: Article
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p.
82
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(5 pages) - Source: IEE Review, Volume 41, Issue 3, page: 90 –90
- DOI: 10.1049/ir:19950302
- Type: Article
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- Source: IEE Review, Volume 41, Issue 3, page: 92 –92
- DOI: 10.1049/ir:19950303
- Type: Article
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- Source: IEE Review, Volume 41, Issue 3, page: 94 –94
- DOI: 10.1049/ir:19950304
- Type: Article
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94
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- Source: IEE Review, Volume 41, Issue 3, page: 96 –96
- DOI: 10.1049/ir:19950305
- Type: Article
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- Source: IEE Review, Volume 41, Issue 3, page: 98 –98
- DOI: 10.1049/ir:19950306
- Type: Article
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- Author(s): F. Acker
- Source: IEE Review, Volume 41, Issue 3, p. 101 –103
- DOI: 10.1049/ir:19950307
- Type: Article
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101
–103
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The problems of uniting two different frequencies (50 Hz and 60 Hz) into a coherent electrical system, which provides a base for one of the most powerful industrial nations in the world, have kept Japanese power engineers constantly updating their technology. The author describes the Japanese power system and the reasons for the two different frequencies. The 50/60 Hz split occurs almost in the geographical middle of Honshu, the eastern half using 50 Hz. The capacities of the 50 and 60 Hz systems are about 45 and 65 GW, respectively. Most of the power exchanges are from the 60 Hz to the 50 Hz network. The two systems were first connected in 1965 by the Sakuma frequency-converter station. The advances made since then in frequency conversion are briefly discussed. The author also discusses the connection of the various Japanese islands with HVDC and HVAC links. Nuclear and thermal generation are discussed as are environmental issues. - Author(s): U. Schaaf
- Source: IEE Review, Volume 41, Issue 3, p. 105 –108
- DOI: 10.1049/ir:19950308
- Type: Article
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p.
105
–108
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A motor using a piezoelectric instead of electromagnetic driving mechanism gives very high torque at low speeds and allows very precise positioning. The author describes the operating principles of piezoelectric motors using PZT ceramics. The design of the motors is then described. The design of the travelling wave motor to overcome the unidirectional problem of piezoelectric motors is described. The main features, advantages and drawbacks of piezoelectric motors are discussed. - Author(s): I. Tiefenbrun
- Source: IEE Review, Volume 41, Issue 3, p. 109 –111
- DOI: 10.1049/ir:19950309
- Type: Article
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109
–111
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In a world of mass production and tough price competition, one UK company has made its name by pursuing quality via an unusual approach to manufacturing. The author discusses the approach to manufacturing taken by Linn Products, a hi-fi manufacturer. Linn Products has an unusual production philosophy: that each employee should contribute at the highest possible level. Instead of a production line where each employee makes a small change to the product before passing it on, specialising in a tiny aspect of the task, individuals and teams are expected to assemble whole products and systems one by one, by hand. This single-stage build process is a more efficient use of human resources. - Source: IEE Review, Volume 41, Issue 3, page: 112 –112
- DOI: 10.1049/ir:19950310
- Type: Article
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- Source: IEE Review, Volume 41, Issue 3, p. 116 –117
- DOI: 10.1049/ir:19950311
- Type: Article
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–117
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- Author(s): G. Vincent
- Source: IEE Review, Volume 41, Issue 3, p. 119 –122
- DOI: 10.1049/ir:19950312
- Type: Article
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p.
119
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UK companies are at the forefront of world efforts to bring the communications revolution to the home. The author describes a comprehensive ATM-based trial currently running in the UK. The first phase of the trial was set up to solve the technical issues involved in setting up and operating a low cost, fully switched ATM-end-to-end infrastructure capable of delivering a wide range of information types, up to and including video. It also explored the basic logistics of service provision, including for example, a regularly updated news-on-demand service. The second phase extends the number of users and implements some cost reductions in the technology employed, but also focuses on the development of services. For this expansion of the trial an environment has been created (the `Service Nursery') for development and trialling of the new generation of multimedia services that will make the superhighway a commercial reality. - Source: IEE Review, Volume 41, Issue 3, p. 123 –125
- DOI: 10.1049/ir:19950313
- Type: Article
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–125
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News
In brief
New products
Westminster report
European report
Opportunities from chaos
Frequency division: the Japanese electricity network
Pushy motors
Start as you mean to continue
Letters
Book reviews
The superhighway in action: the Cambridge trial
Winning the business
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