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Comparison of temperature coefficient of standard inductor by measuring change in inductance and resistance 通过测量电感和电阻的变化比较标准电感的温度系数
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5543838
M. A. Ansari, J. Jyotsana, A. K. Saxena
{"title":"Comparison of temperature coefficient of standard inductor by measuring change in inductance and resistance","authors":"M. A. Ansari, J. Jyotsana, A. K. Saxena","doi":"10.1109/CPEM.2010.5543838","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5543838","url":null,"abstract":"Standard inductors manufactured by General Radio (GR) are widely used by NMIs. The temperature coefficient for these standard inductors is 30 ± 5 ppm/°C, as per manufacturer. NPL India (NPLI) had earlier determined the temperature coefficient of standard inductors by measuring change in inductance. Now by measuring change in resistance, temperature coefficient of inductors is re-determined. Temperature coefficients determined from the two methods are reported here.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128012692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Fiber optic metrology: The temperature influence in DGD measurements 光纤测量:温度对DGD测量的影响
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5545305
G. Borghi, A. dos Santos, J. Ferreira
{"title":"Fiber optic metrology: The temperature influence in DGD measurements","authors":"G. Borghi, A. dos Santos, J. Ferreira","doi":"10.1109/CPEM.2010.5545305","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5545305","url":null,"abstract":"The DGD (differential group delay) behavior on single-mode optical fibers was analyzed with regard to temperature variation. It was observed that DGD curve shape along the wavelength axis could change if the fiber was submitted to high temperature.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128053434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
To what extent can rogowski coil current amplitude linearity be verified? 在多大程度上可以验证rogowski线圈电流幅度线性?
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544836
B. Djokic, J. Ramboz, D. Destefan
{"title":"To what extent can rogowski coil current amplitude linearity be verified?","authors":"B. Djokic, J. Ramboz, D. Destefan","doi":"10.1109/CPEM.2010.5544836","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544836","url":null,"abstract":"Calibrations of Rogowski coils at power frequencies are often performed at currents of only tens of amperes even though the coils are used at currents larger by two to three orders of magnitude, or even greater. The underlying assumption of an ideal linearity versus current amplitude is true for ideal coils. This paper addresses the question of practical significance as to what extent the linearity of real Rogowski coils versus current can presently be verified at power frequencies. For this task several different types of Rogowski coils were evaluated using a digital sampling system, with the best calibration uncertainties (k=2) of 50 µA/A for magnitude and 50 µrad for phase.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132726940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Evaluation of 100 mH inductance by series resonance method in VNIIM and in mikes 用串联谐振法评价VNIIM和mikes中的100mh电感
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5543668
Y. Semenov, A. Satrapinski
{"title":"Evaluation of 100 mH inductance by series resonance method in VNIIM and in mikes","authors":"Y. Semenov, A. Satrapinski","doi":"10.1109/CPEM.2010.5543668","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5543668","url":null,"abstract":"Series resonance (SR) method was investigated for the realization of 100 mH inductance at 1 kHz in VNIIM and MIKES. Practical details of the application of this method and comparison with the results of realization by the Maxwell-Wien Bridge method are presented. Results showed that 1 s uncertainty of the 100 mH realization by SR method at 1 kHz can be at the level of parts in 106.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"247 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133903971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A new clock laser system for an Yb optical lattice clock using a fibre-based frequency comb stabilized to a narrow linewidth laser at 1064 nm 利用光纤频率梳稳定到1064nm窄线宽激光器的Yb光晶格时钟激光系统
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544314
K. Hosaka, H. Inaba, Y. Nakajima, K. Iwakuni, M. Yasuda, T. Kohno, D. Akamatsu, A. Onae, F. Hong
{"title":"A new clock laser system for an Yb optical lattice clock using a fibre-based frequency comb stabilized to a narrow linewidth laser at 1064 nm","authors":"K. Hosaka, H. Inaba, Y. Nakajima, K. Iwakuni, M. Yasuda, T. Kohno, D. Akamatsu, A. Onae, F. Hong","doi":"10.1109/CPEM.2010.5544314","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544314","url":null,"abstract":"We have been developing a new clock laser system for an Yb optical lattice clock. The system does not include a high finesse cavity at 578 nm, but a fibre-based frequency comb, which is tightly phase-locked to a narrow linewidth Nd:YAG laser at 1064 nm. The Nd:YAG laser is phase locked to a high finesse cavity at 1064 nm made from ultra low expansion glass.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133916335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of different methods of inductance realisation 不同电感实现方法的比较
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5543638
G. Eklund, A. Satrapinski, E. Suomalainen, Y. Semenov
{"title":"Comparison of different methods of inductance realisation","authors":"G. Eklund, A. Satrapinski, E. Suomalainen, Y. Semenov","doi":"10.1109/CPEM.2010.5543638","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5543638","url":null,"abstract":"A comparison of inductance realisation at 100 mH was carried out in October –November 2009 at MIKES and SP. The measurand was a four terminal pair toroidal inductor measured at three frequencies 400 Hz, 1000 Hz and 1591 Hz. Realisations by series and parallel resonance methods and by a 2 DVM sampling method were used. The results showed agreement within combined expanded uncertainty.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"304 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132221713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Quantum Hall resistance standards from a high-mobility molecular beam epitaxy system 高迁移率分子束外延系统的量子霍尔电阻标准
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544379
K. Pierz, M. Gotz, E. Pesel, F. Ahlers, H. Schumacher
{"title":"Quantum Hall resistance standards from a high-mobility molecular beam epitaxy system","authors":"K. Pierz, M. Gotz, E. Pesel, F. Ahlers, H. Schumacher","doi":"10.1109/CPEM.2010.5544379","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544379","url":null,"abstract":"We study magnetotransport properties and Hall resistance quantization in a set of AlGaAs/GaAs heterostructures grown in a high-mobility molecular beam epitaxy system. The data show that, with an appropriate choice of growth parameters, the electron mobility in such heterostructures can be reduced and we find good resistance quantization allowing for metrological application.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134118685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Josephson-voltage-standard-locked sine wave synthesizer: Implementation and preliminary results 约瑟夫森电压标准锁定正弦波合成器:实现和初步结果
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544102
A. Rufenacht, F. Overney, A. Mortara, B. Jeanneret
{"title":"Josephson-voltage-standard-locked sine wave synthesizer: Implementation and preliminary results","authors":"A. Rufenacht, F. Overney, A. Mortara, B. Jeanneret","doi":"10.1109/CPEM.2010.5544102","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544102","url":null,"abstract":"This paper describes a Josephson-voltage-standard-locked synthesizer where a calibrator is used as a sine wave generator whose output is controlled by the calculable fundamental of the stepwise sinusoidal wave generated by a SINIS Josephson array. Such a system combines the versatility of a calibrator with the stability and accuracy of the Josephson voltage standard.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134525066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
DC high current ratio standard based on series-parallel calibration method 基于串并联校准方法的直流大电流比标准
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5544838
H. Shao, Feipeng Lin, Xiaoxin Hua, B. Liang, Kaifeng Qu, Yang Pan
{"title":"DC high current ratio standard based on series-parallel calibration method","authors":"H. Shao, Feipeng Lin, Xiaoxin Hua, B. Liang, Kaifeng Qu, Yang Pan","doi":"10.1109/CPEM.2010.5544838","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5544838","url":null,"abstract":"Inherent ratios of DCCs are revealed between series and parallel connections of n sections of primary windings with the same nominal turns. By keeping the current buses geometric position fixed, leakage flux effects are maintained unchanged between series and parallel switch. A series of DCCs is calibrated under rated ampere turns for current dissemination from 5A to 5kA.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"427 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133863854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Comparison of two algorithms for accurate harmonic analysis of periodic arbitrary signals using nonsynchronous digital sampling 采用非同步数字采样对周期任意信号进行精确谐波分析的两种算法的比较
CPEM 2010 Pub Date : 2010-06-13 DOI: 10.1109/CPEM.2010.5545099
G. Kyriazis
{"title":"Comparison of two algorithms for accurate harmonic analysis of periodic arbitrary signals using nonsynchronous digital sampling","authors":"G. Kyriazis","doi":"10.1109/CPEM.2010.5545099","DOIUrl":"https://doi.org/10.1109/CPEM.2010.5545099","url":null,"abstract":"Two methods for the harmonic analysis of periodic arbitrary signals based on digital sampling data were compared: an extension of Swerlein's algorithm to nonsinusoidal signals and a Bayesian spectrum analysis using approximations based on the normal distribution and the posterior mode.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115314239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
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