IEE-IERE Proceedings India
Volume 10, Issue 4, July August 1972
Volumes & issues:
Volume 10, Issue 4
July August 1972
Development and prospects of computers in india
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, page: 107 –107
- DOI: 10.1049/iipi.1972.0038
- Type: Article
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107
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Current distribution and impedance of yagi-uda-type antennas
- Author(s): S.K. Chowdhury and K.K. Bandyopadhyay
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, p. 108 –111
- DOI: 10.1049/iipi.1972.0039
- Type: Article
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A method of finding the current distribution and impedance of 2-element Yagi-Uda array is presented. The two simultaneous integral equations for the two antennas are solved by a technique in which the currents are represented by two seperate Fourier Series [1]. This principle may be extended to analyse an n-element Yagi-Uda Array
Thunderstorm activities in w. bengal 1968–70
- Author(s): Manoranjan Datta and Sujit Mukerjee
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, p. 112 –121
- DOI: 10.1049/iipi.1972.0040
- Type: Article
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112
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The information concerning lightning activities in an area has an important bearing on the assessment of the vulnerability of transmission lines in that area to lightning flashes. The question arises as to the level of protection that should be aimed at for a given standard of service. The probability of a flashover for a given level of protection can be obtained from the probability of thunderstorm severityLightning-flash counters of the design approved by the CIGRE study group 33 for worldwide adoption were built, for automatically recording the lightningstroke incidents, in collaboration with the electricity-supply authorities of Bengal.The primary purpose of the survey is to provide information on the varying degree of thunderstorm activities in different seasons. Data derived from the survey are being used also for examining the accuracy and range of an automatic lightning-flash counter.The agreement between the lightning day as defined by a lightning counter and the day with perceptible thunder can be established if the observer can hear the weak thunder. The lightning counter is on the average more reliable than the audible sounds, since the human factor plays a more important part than the uncertainty of the instrument.The present report covers the work carried out during 1968–69 with the aid of a grant provided by the Council of Scientific & Industrial Research. The authors are very grateful to the Director Ceneral of the CSIR for the assistance given and also to Jadavpur University for providing the facilities for continuing the investigation.
Effect of electrical discharge on the behaviour of silicon solar cell
- Author(s): Ashok Srivastava
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, p. 122 –127
- DOI: 10.1049/iipi.1972.0041
- Type: Article
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122
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It is generally believed that there is no possibility of deterioration in the performance of silicon solar cells, occurring on the surface of the earth. However the electrical lightning which is quite relevant in a terrestrial power system may affect the cell performance significantly. For this, the effect of electrical discharge on the cell's series resistance, curve power factor, conversion efficiency and spectral response have thoroughly been investigated. The cells are found to exhibit large and permanent degradation in their characteristics. Some of the phenomena which might be responsible for this observed degradation are pointed out and discussed.
Antenna pattern generation using digital circuits
- Author(s): P.S. Neelakantaswamy ; D. Raghavan ; V.C.V. Pratap Reddy
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, p. 127 –131
- DOI: 10.1049/iipi.1972.0042
- Type: Article
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127
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In Radar Simulation technique, the simulated video echo pulses are mixed with low frequency noise (clutter) and gated over the scan interval; they are also subjected to amplitude modulation in proportion with the antenna pattern envelope swept during the scan time. Conventionally, a mechanical antenna pattern genarator or a Cathode Ray Tube Photoform Function Generator is used to obtain the modulating signal. This paper describes two relatively simple methods, using digital circuits, of obtaining the antenna patterns.
Accounts for the year ended 31st december 1971
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, p. 131 –133
- DOI: 10.1049/iipi.1972.0043
- Type: Article
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Technical news
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, p. 134 –136
- DOI: 10.1049/iipi.1972.0044
- Type: Article
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Institution notices
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, p. 136 –137
- DOI: 10.1049/iipi.1972.0045
- Type: Article
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Publications news
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, p. 137 –138
- DOI: 10.1049/iipi.1972.0046
- Type: Article
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Forthcoming conferences
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, p. 139 –140
- DOI: 10.1049/iipi.1972.0047
- Type: Article
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139
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Introducing members
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, page: 141 –141
- DOI: 10.1049/iipi.1972.0048
- Type: Article
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141
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Institutions' activities
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, page: 142 –142
- DOI: 10.1049/iipi.1972.0049
- Type: Article
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Members' appointments
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, page: 143 –143
- DOI: 10.1049/iipi.1972.0050
- Type: Article
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143
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Elections & transfers
- Source: IEE-IERE Proceedings India, Volume 10, Issue 4, page: 144 –144
- DOI: 10.1049/iipi.1972.0051
- Type: Article
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