Search Results - "INTELEC '84 - International Telecommunications Energy Conference"

Resonant Switches - A Unified Approach to Improve Performances of Switching Converters by Liu, Kwang-Hwa, Lee, Fred C.

“…In searching for a general "zero-current-Switching" technique for DC-DC converters, the concept of resonant switches is developed. As a combination of…”
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Transformerless DC-to-DC Converters with Large Conversion Ratios by Middlebrook, R. D.

“…A new switching dc-to-dc converter is introduced in which large voltage step-down ratios can be achieved without a very small duty ratio and without a…”
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Automatic Switching of AC Power in Larger Telephone Exchanges Equipped with Standby Generating Equipment by Spicker, Hermann A.

“…A concept of switchgear with drawout air circuit breakers used as transfer equipment between commercial utility power and a stand-by power plant is described…”
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A High Performance PWM Inverter for UPS Applications by Arikan, C., Saribatir, B.

“…Static uninterruptible power supplies are becoming an integral part of critical loads; like telecommunication systems, industrial process control systems, etc…”
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Wideband and Extended Wideband Temperature Operation Field Tests in Telephone Central Offices by McKay, J.R.

“…Field tests involving wideband and extended wideband temperature operation were conducted in several electronic central offices in South Central Bell and…”
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A Distributed Power Architecture for the System 75 Digital Communications System by Berkowitz, P. R., Jacobs, M. E., Kunzinger, F. F., Michelet, R. W.

“…The distributed power architecture for the System 75 Digital Communications System offers performance that would be difficult to achieve with conventional…”
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A New Air Conditioning System for Telecommunications Equipment Rooms with High-heat Generation Density by Suenaga, T., Matsuura, F.

“…This paper describes an air conditioning system for telecommunications equipment rooms, where a considerable number of electronic switching systems are…”
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Semac a Microprocessor System for Remote Monitoring and Control of Engine Generators by Mealing, A W, Jones, W R

“…In the UK where automatic standby AC power plants are installed in many small and all medium and large telecommunication centres, the engine control systems…”
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A New Material and Data Processing Design for a High Availability Target: The Geode System by Chigolet, J.C., Gerard, M.J., Francon, C.

“…Telecommunications power stations must satisfy harsh maintainability availability and operating constraints. The French PTT Administration and its associated…”
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A 150KVA Three-Phase Triport UPS by Tominaga, F., Iwanaga, M., Kawata, Y.

“…A 150kVA three-phase triport uninterruptible power system(triport UPS) employing transistor inverters has been developed. By using a core type for the triport…”
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A Long Life Totally Maintenance Free Modular Battery for Telecommunications Standby Power by Giovannini, Joseph F.

“…Lead-acid storage batteries are used extensively in the Telecommunications industry as a source of standby power in the event that utility supplied electrical…”
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A 62.5 kVA 3-Phase Ferroresonant Transformer Cures Equipment Failures Caused by Severe Utility Interface Conditions by Powell, Jeffrey, Rhyne, Earl, Ward, George

“…Unusual failure rates in satellite communications earth stations purchased by the Algerian government and steps taken to reduce fault occurrences are reviewed…”
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A Power Management and Distribution Concept for Space Station by Hackler, Irene M., Robinson, Robert L., Hendrix, Bob

“…It is expected that utilization of the space environment will increase significantly when a manned low-Earth-orbit Space Station becomes operational. To…”
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A Novel Couple - But Faithful and Dependable by Grossoni, M., Albiero, W.

“…Fiamm have introduced a new lead-acid battery for telecommunications duty which employs a hybrid construction, using low antimony-selenium spines for the…”
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A Solar Photovoltaic Array Power Conditioner with New Instantaneous Current Control Strategy by Savary, P., Nakaoka, M., Maruhashi, T.

“…A sinusoidal PWM type inverter using Gate-Turn-Off Thyristors and featuring a new instantaneous current control strategy is described. Its utilization as an…”
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A New Concept: Intermittent Charging of Lead Acid Batteries in Telecommunication Systems by Reid, D. P., Glasa, I

“…Present communication systems operate their batteries in a full float mode. This mode provides a constant charge voltage which is sufficient to maintain the…”
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Power MOS Technology Invades Telecom by Blanchard, R. A., Tubis, Chris J., Buchanan, Walter

“…The steady march of semiconductor device technology is most publicized in the high density, low-voltage digital area. Another area, power control and power…”
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Semiconductor Component Technologies and Packaging Structures in Future Switching Systems - Their Impact on Power Systems by Rundkvist, Kjell

“…For fifteen years the evolution of the telecommunication exchanges has been determined by the development of the semiconductor technology. This paper deals…”
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Unity Power Factor off Line Switching Power Supplies by Keller, Richard, Baker, Gary

“…A simple circuit is presented that performs the unity power factor function with low harmonic distortion of the input line current. The circuit is of the…”
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Diesel Generating Set with Self-Diagnosis Function by Yamamura, H., Ogasawara, M.

“…Diesel generating sets are widely used in telephone offices aid radio-relay stations as standby power in case of commercial power failure. However, they…”
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