Results 101 to 110 of about 266,617 (137)
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FIRST DEGREE HEART BLOCK AFTER DC COUNTERSHOCK
Acta Medica Scandinavica, 1973Abstract During 2 1/2 years 131 patients with atrial arrhythmias have been treated with DC countershock on 146 occasions. In 31 cases first degree heart block (AV‐I) was observed after conversion to sinus rhythm. Different clinical parameters are discussed in relation to the development of postconversion AV‐I.
P O, Wester, C, Helmers
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Accelerated Recovery of DC Blocking Using Repolarization
2019 9th International IEEE/EMBS Conference on Neural Engineering (NER), 2019Direct current (DC) can be applied to a nerve to generate a complete nerve block. However, using conventional platinum electrodes, reactions occur at the nerve interface causing damage to the nerve. The electrode can be separated from the nerve using a biocompatible, ionically conducting medium, which isolates the damaging reactions in a vessel away ...
Tina L, Vrabec +3 more
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DC power flow control in DC networks through DC/DC zero sequence blocking transformer
2017 IEEE 2nd Advanced Information Technology, Electronic and Automation Control Conference (IAEAC), 2017World is moving to adopt the renewable energy sources to overcome the power issues with zero toxic emission. The key problem is to inject huge power to the grid, generating from renewable energy sources with traditional electrical equipment and grid infrastructure.
Muhammad Qasim Khan +3 more
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A Building Block Method for Input-Series-Connected DC/DC Converters
IEEE Transactions on Power Electronics, 2021DC/DC converters are connected in series at the input so that low power devices can be used in high-voltage conversion applications. This article proposes a building block method for constructing an input-series-connected dc/dc converter, which combines voltage sharing modules (VSM) with voltage source modules or current source modules.
Jinpei Duan +4 more
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ABM blocks for precise measurements in DC-DC converters
2008 IEEE International Conference on Automation, Quality and Testing, Robotics, 2008This paper presents some fast and precise behavioral blocks used for the measurement of power, average and root mean square values in electronic circuits. They are fast and precise and the obtained results are better than the ones obtained with the Pspice functions. The method was tested on some filters, like LPF or HPF, and applied on DC-DC converters.
M. Cirlugea, L. Szolga, L. Festila
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A transformer-less modular multilevel DC-DC converter with DC fault blocking capability
2017 IEEE Southern Power Electronics Conference (SPEC), 2017The transformer-less modular multilevel converter (MMC) DC-DC converter can achieve direct DC-DC conversion without an intermediate AC transformer. In this paper, a transformer-less MMC DC-DC converter topology with bi-directional DC fault blocking capability is proposed.
Fei Zhang, Geza Joos, Wei Li
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A High-Power High-Ratio DC-DC Converter with DC Fault Blocking Capability
2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL), 2019This paper proposes a non-isolated medium-voltage DC-DC converter with high step-up ratio. It aims to interconnect the low-voltage (LV) generation unites and medium-voltage (MV) power-collecting grid in DC renewable system. The proposed DC-DC converter is composed by a switch network and a few cells.
Sixing Du, Reza Iravani
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Multilevel Block Codes with DC-Constraint Property
IEEE Transactions on Communications, 1975Multilevel fixed-length block codes which have a dcconstraint property are discussed, and the upper bounds of the transmission rates of such codes are described under the limitations of the running digital sums (RDS) of coded signal streams. Then stateindependent decodable codes whose transmission rates are equal to the upper bounds are presented for ...
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DC-Free Error-Control Block Codes
IEEE Transactions on Communications, 2005DC-free codes and error-control (EC) codes are widely used in digital transmission and storage systems. To improve system performance in terms of code rate, bit-error rate (BER), and low-frequency suppression, and to provide a flexible tradeoff between these parameters, this paper introduces a new class of codes with both dc-control and EC capability ...
F. Zhai, Y. Xin, I.J. Fair
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Boost building block (B/sup 3/) [DC/DC power conversion]
21st International Telecommunications Energy Conference. INTELEC '99 (Cat. No.99CH37007), 1999This paper presents a method of integrating a boost converter. The basic idea is to integrate all the semiconductor devices and the snubber circuits on a ceramic substrate with an automated assembly process. This integration results in a more compact packaging of the boost converter with a better thermal performance.
null Qing Chen, A.W. Lotfi, D.R. Hilburn
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