• 전기전자학회논문지
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• 제20권1호
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• pp.119-122
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• 2016

본 논문에서는 기존 LDO regulator에서 많이 사용 되는 피드백 저항을 Pseudo resistor를 이용하여 동작하기 위한 LDO regulator를 제안한다. 제안 된 Pesudo resistor를 사용한 Feedback network는 기존 피드백 저항보다 면적이 작으면서도 기존 LDO regulator의 역할을 하며, 노이즈를 갖는 LDO regulator의 단점을 보완하고자 제안되었다. 기존 LDO regulator와 비교하여 비슷한 성능을 가짐에도 불구하고, Overshoot를 감소시키고 면적을 줄여 더 높은 효율을 제공할 수 있다. 설계한 회로는 동부 하이텍의 0.18um CMOS 공정을 이용하였다.

• 한국전기전자재료학회논문지
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• 제21권1호
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• pp.73-78
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• 2008

A resistor network model for the horizontal AlInGaN LED was investigated, The parameters of the proposed model are extracted from the test dies and $350{\mu}m$ LED, The center of the P-area is the optimal position of a P-electrode by the simulation using the model. Also the optimal chip size of the LED for the new target current was investigated, Comparing the simulation and fabrication result, the errors for the forward voltage and the light power are average 0,02 V, 8 % respectively, So the proposed resistor network model with the linear forward voltage approximation and the exponential light power model are useful in the simulation for the horizontal AlInGaN LED.

• 한국전자파학회논문지
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• 제7권2호
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• pp.157-166
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• 1996

분포 혼합 종단 처리 방식을 채택하고 있는 TEM Cell에 있어서, 내부 도체상의 전류 흐름 및 종단에서의 전류 흐름 해석 방법에 대하여 연구하였다. 회로 해석법을 적용하여 내부 도체 종단부에서의 전류 흐름의 직진성 개선 및 그에 따른 전력 소모를 고려한 최적 종단 저항 네트워크를 설계 하였다. 기존의 각 저항들을 등 간격으로 배치 시켜 구성한 저항 네트워크와 연구결과 제안된 저항 네트워크의 종단 전류 흐름에 대한 수치 해석을 수행하였으며, 두 네트워크를 각각 제작하여 적외선 촬영을 한 결과, 수치 해석 결과와 일치함을 입증하였다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2007년도 추계학술대회 논문집
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• pp.457-458
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• 2007

We investigated a resistor network model for the horizontal AlInGaN LED. Adding the proposed current density dependent relative quantum efficiency, the power simulation can be also obtained. Comparing the simulation and the measurement results for the LED with the size of $350{\mu}m$, the model is reasonable to simulate the forward voltage and the light output power. Using this model we investigated the optimization of the position and the number of the finger electrodes in a given chip area. It shows that the center disposition of the p-finger electrode in p-area is optimal for the voltage and best for the power. And the minimum number of the n-finger electrodes is best for the power.

• 대한전기학회논문지:전력기술부문A
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• 제53권1호
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• pp.31-37
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• 2004

In this paper, the analysis result of the switching surge in substation including GIS(Gas Insulated Switchgear) has been described using the EMTP(Electro Magnetic Transient Program) program. After performing the modeling of the input data, we have reviewed the energization overvoltages of GCB(Gas Circuit Breaker) without closing resistor in 345kV network, according to the conditions of simultaneously operating switch and statistically operating switch. Firstly, it can be known that the energization overvoltage of single line is higher than that of parallel energized line. Secondly, the maximum energization overvoltage obtained in statistics switch is higher than one in simultaneous switch. From these results, it can be known that the phase-to-earth energization overvoltages of $\alpha$-$\beta$ section are less than 2.2 p.u when closing resistor is eliminated. Therefore, it is possible to consider the circuit breaker eliminated the closing resistor in $\alpha$-$\beta$ section.

• International Journal of Computer Science & Network Security
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• 제23권7호
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• pp.23-31
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• 2023

This article discusses the sabotage of loops of intruder alarm systems. Although loop alarm systems are now gradually being replaced by digital alarm systems, they are still significantly present in practice. This paper describes two experimentally verified techniques for sabotaging balanced loops. The first technique is based on the jump replacement of the balancing resistor by a fake resistor. The second technique is based on inserting a series-parallel combination of two rheostats into the loop. By alternately changing the resistance of these rheostats, a state is reached where the balancing resistor is shorted by the parallel rheostat and replaced by the series rheostat. Sabotage devices for both attacks are technically simple and inexpensive, so they can be made and used by an amateur. Owners of loop alarm systems should become find out about this threat.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2002년도 하계학술대회 논문집 Vol.3 No.2
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• pp.553-555
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• 2002

We were fabricated of rf power resisotor on AlN substrates by thick film process. The characteristics of capacitance and microwave are measured by digital LCR meter and Network analyzer(HP8532D). The results are shown that capacitances are slight greater and microwave characteristics are good values.

• 대한수학회지
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• 제47권6호
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• pp.1223-1238
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• 2010

The purpose of this work is to identify the internal structure of the electrical networks with data obtained from only a part of network or the boundary of network. To be precise, it is discussed whether we can identify resistors or electrical conductivities of each link inside networks by the measurement of voltage on the boundary which is induced by a prescribed current on the boundary. As a result, it is shown that the structure of the resistor network can be determined uniquely by only one pair of the data (current, voltage) on the boundary, if the resistors satisfy an appropriate condition. Besides, several useful results about the energy functionals, which means the electrical power, are included.

• 한국인터넷방송통신학회논문지
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• 제12권1호
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• pp.239-243
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• 2012

본 논문에서는 전기 저항식 수분 측정 방식을 선택한 토양수분센서를 제안하였다. 이 방식은 토양내의 수분량에 따라 저항의 변화가 생기는 것을 전기적인 신호로 변환하여 토양수분량과의 관계를 비교하여 수분량을 측정하는 방식으로 방법이 간단하며 저렴한 비용으로 간단하게 장치를 구현하였으며, 시리얼통신을 이용하여 여러 개의 센서를 하나의 네트워크에 묶어 사용하였다. 이 센서 네트워크를 사용하여 IMS(Internet Management System)에 적용하였으며, 센서 네트워크가 웹에서도 잘 작동함을 보였다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2004년도 추계학술대회
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• pp.1740-1745
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• 2004

A simplified resistor network model for electrical and mass transport in anode-supported planar solid oxide fuel cell (SOFC) was constructed in order to investigate the effect of interconnect rib geometry on the cell performance. For accurate potential calculation, activation and concentration over-potentials at the electrode/electrolyte interfaces were fully considered in this calculation. When contact resistance was not considered, the optimum interconnect rib length were calculated to be $0.1{\sim}0.2$ mm for 2 mm half unit cell for given operation conditions and properties. However, with realistic contact resistance, the interconnect rib length should be increased to provide larger contact area and thus to obtain better performance.