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Monolithic, photoconductive impulse generator using a GaAs wafer (1991)

Kim, A. ; Zeto, R. ; Youmans, R. ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 58 (1991), S. 2812-2814

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: A new technique for generating multikilovolt, nanosecond pulses was demonstrated. The technique relies on the use of a semi-insulating GaAs substrate, which performs the dual functions of energy storage and switching. The energy storage was realized by fabricating disk-shaped electrodes on a 7.5-cm-diameter GaAs wafer, thereby forming a radial transmission line. A mode-locked Nd:YAG laser was used to activate the switch, which is vertically fabricated in the central region of the substrate. This device generated and delivered about a 2 MW pulse with a rise time of less than 500 ps to a 50 Ω load.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.104744

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A holistic approach to the maintenance "problem" (1999)

Coetzee, Jasper L.

Bingley : Emerald

Journal of quality in maintenance engineering 5 (1999), S. 276-281

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ISSN: 1355-2511

Source: Emerald Fulltext Archive Database 1994-2005

Topics: Technology , Economics

Notes: Modern production machines require a new approach towards the maintenance "problem". Maintenance engineers realise this and are eager to implement new philosophies/ techniques/methodologies that come available. The problem is that most of these are part solutions and cannot produce the required results when not used in its larger (maintenance) managerial context. These philosophies/techniques/methodologies should be used as a part of a larger maintenance "plan", which is strategically driven. Success follows by using a top down process of setting maintenance policy, enriching it with well thought through procedures and supporting it with a proper maintenance business plan.