• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.18 no.4
• /
• pp.22-27
• /
• 2004

The gas discharge AND gate which have been newly proposed is applied to three electrode surface discharge AC PDP. The address discharge characteristics by the DC-AC floating discharge by which Y electrode is made floating electrode is analyzed The address discharge can be begun by using the floating discharge from the experiment result Moreover, the display discharge can be sustained. The DC priming discharge that the floating discharge is matched to timing is generated in a supplementary electrode. As a result, space charge is supplied enough to the space of the floating discharge and the data voltage is lowered up to l00(V). Driving method to use this DC-AC floating discharge is able to obtain the address operation margin of l00(V).

• Journal of the Korea Institute of Military Science and Technology
• /
• v.15 no.2
• /
• pp.121-129
• /
• 2012

In this study, in terms of the exercise vehicles of the weapon systems having negative buoyancy, the analysis on the operation concepts was performed and the new methods of floating to surface were proposed. In case of having negative buoyancy, the additional methods for recovering the exercise vehicle have to be considered. As parts of recovering the exercise vehicle, for floating to surface the new methods of weight discharge, weight separation and sea water discharge were proposed. The conceptual design about sea water discharge method was performed. It was confirmed that those methods could be applied to the design of the exercise vehicle having negative buoyancy.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 2003.11a
• /
• pp.49-53
• /
• 2003

본, 연구는 새로운 기체방전 AND gate를 AC 3전극 면방전 PDP에 적용하기 위한 AC-DC floating 방전을 사용한 어드레스 구동특성을 해석한 것이다. 실험결과 floating 방전을 이용하여 어드레스 방전을 개시시킬 수 있었으며 표시방전까지 용이하게 동작시킬 수가 있었다. 또한 floating 방전과 타이밍을 동기시켜 보조전극에 프라이밍 방전을 일으켜 줌으로써 floating 방전 공간에 공간전하를 충분히 공급해 줌으로써 데이터 전압을 100V 정도까지 낮출 수 있었으며 어드레스 동작 마진도 100V 정도까지 얻을 수가 있었다.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.18 no.3
• /
• pp.34-39
• /
• 2004

This research investigated the influence on the 4 cell of DC discharge on the side of the discharge characteristic. This DC discharge cells are that composes AND gate of AND gate PDP newly proposed. As for the discharge starting voltage of this discharge cell of 4 pieces, it has been understood that there is deeply a relation up to the space charge generated from the discharge of adjoining discharge cell through the experiment. The discharge voltages which had become each discharge cell optimizations from the experiment result were decided. Moreover, the width of the margin of two AND input voltages is wide and the AND function occurs clearly. However, it has been qualitatively understood that it is difficult enough to obtain the operation margin of the DC priming discharge used to address discharge of PDP.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.18 no.4
• /
• pp.112-117
• /
• 2004

This paper describes the analysis of the UHF signal characteristics due to the partial discharge sources which can exist in a GIS. For the experiment, a model GIS was made and 5 types of discharge source were created as follows; corona discharge, surface discharge, void discharge, discharge due to free particle, discharge from floating electrode. The frequency spectra and the phase characteristics of UHF signals were induced by UHF signal analysis. The results were quantified to systematically adapt to analyze the PD sources in the GIS and utilized as algorithm data based on the neural network for Back-Propagation Algorithm with a multi-layer structure. The perception rate of the constructed algorithm showed approximately 94[%] and 82[%] in learning and testing data, respectively.

• The Journal of the Korea institute of electronic communication sciences
• /
• v.10 no.2
• /
• pp.157-164
• /
• 2015

The present study is to identify discharge characteristic from the mouth of floating debris in the Nakdong River through real time tracking of moving route and by analyzing hydrometeorologic environmental. To identify the path and route of outflow through the mouth of the river of floating debris, small-sized buoy equipped with satellite location transmitters was used. Moreover, to identify hydrometeorologic environmental, flux of the river, change of discharge of the River-Mouth Weir and wind direction of the mouth of the river area were analyzed. From now on, the present study is expected to be utilized as basic data to identify damage and flowing into nearby ocean of the floating debris of Nakdong River in time of severe rain storm.

• Journal of Korea Water Resources Association
• /
• v.51 no.5
• /
• pp.405-415
• /
• 2018

Hydraulic variables such as discharge coefficient, gate opening, and upstream water depth are required to calculate the discharge of vertical lift gate. It is very important for a precise gate design, because it may affect the rest, to predict the behavior of gate opening during operation. In this study, an equation by which gate opening could be predicted with any upstream water depths was derived from the relation between the calculated value from buoyancy theory and measured one from experiment for a floating gate model. Downpull force was the reason for the differences between the calculated and the measured and it was verified using pressure coefficient. Also, the relation of discharge coefficient with gate opening ratios was derived. The derived relations were used for flood routing and it was realized that downpull force effect should be fully taken into account during gate design.

• Journal of IKEEE
• /
• v.21 no.2
• /
• pp.150-153
• /
• 2017

In this paper, a structure of GCNMOS based ESD protection circuit using floating-body technique is proposed. TCAD simulation of Synopsys was used to compare with the conventional GGNMOS and GCNMOS. Compared with the conventional GCNMOS, the proposed ESD protection circuit has lower trigger voltage and faster turn-on-time than conventional circuit because of the added NMOSFET. In the simulation result, the triggering voltage of the proposed ESD protection circuit is 4.86V and the turn-on-time is 1.47ns.

• The Transactions of the Korean Institute of Electrical Engineers C
• /
• v.52 no.6
• /
• pp.267-273
• /
• 2003

The plasma display panel with the electrode structure of new discharge AND gate and its driving scheme were proposed and the driving system for experiment was developed. And operation of these discharge AND gate was verified by the experiment of PDP addressing with floating electrode. This discharge AND gate operated by the operation speed of 8$mutextrm{s}$ and the operation margin of 100V. The address operation margin of 10V also obtained. It was known to be able to control the discharge of the adjoining scan electrode accurately. Because proposed method uses the DC discharge the control of the discharge can be facilitated compared with conventional discharge AND gate. Moreover, because the input discharge and the output discharge of discharge gate are separate, the display discharge can be prevented from passing discharge gates. Therefore, it is possible to apply to the large screen plasma display panel. And the decrease of contrast ratio does not occur because the scanning discharge does not influence the picture quality.

• Korean Chemical Engineering Research
• /
• v.57 no.3
• /
• pp.432-437
• /
• 2019

An atmospheric pressure floating electrode-dielectric barrier discharge (FE-DBD) system having flexible electrodes was developed and its plasma characteristics was investigated. Polytetrafluoroethylene (PTFE), polydiemethylsiloxane (PDMS), and polyethylene terephthalate (PET) were used as flexible dielectrics for flexible powered-electrodes. The optical intensity and electron temperature of the atmospheric pressure FE-DBD plasma increased with the voltage applied to the powered electrode, and increased in the order of PTFE < PDMS < PET at a fixed voltage. This behavior was explained in terms of the change in the capacitance of the flexible dielectrics with the dielectric type and voltage, implying that the plasma characteristics of an atmospheric pressure FE-DBD having flexible electrodes can be controlled by modulating the flexible dielectrics for the flexible powered-electrode and the voltage applied to the powered electrode. Because an atmospheric pressure FE-DBD system can generate a plasma along the curvature of skins, it is expected to have useful applications in plasma medicine.