• Journal of Ocean Engineering and Technology
• /
• v.20 no.6 s.73
• /
• pp.18-23
• /
• 2006

This paper introduces the results of the development of a new mobile digital DC-arc welding machine (DDWM). A simple PI controller is applied to the DDWM to control the output welding current that is tracking the constant setting current. Furthermore, a hot-start function, an anti-stuck function, a standby mode and an intelligential circuit breaker (ICB) are included in the DDWM. The DDWM increases welding quality and saves more power energy than a conventional welding machine. The DDWM is changed from ready mode into the standby mode, automatically, after 2-minute intervals from this unload start. Then, the DDWM is changed into ready mode, automatically, since it is reused for welding. Moreover, the DDWM increases welding quality, productivity and reduces costs of welding. So, the DDWM can make a considerable contribution to the mobile welding industries. The effectiveness of the DDWM was proven by the experimental results.

• Proceedings of the Korean Society of Marine Engineers Conference
• /
• 2006.06a
• /
• pp.71-72
• /
• 2006

This paper introduces the results of the development of a new mobile Digital DC-arc Welding Machine (DDWM). A simple PI controller is applied to the DDWM to control the output welding current tracking the constant setting current. Furthermore, a hot-start function, an anti-stuck function, a standby mode and an intelligential circuit breaker (ICB) are included in the DDWM. The DDWM increases welding quality and saves more power energy than a conventional welding machine. Because the DDWM is changed from ready mode into the standby mode automatically after 2 minutes interval from this unload start. Then the DDWM is changed into ready mode automatically since it is reused to weld. Mover, the DDWM increases welding qualify, productivity and reduces costs of welding. So, the DDWM can have a great of contribution to the mobile welding industries. The effectiveness of the DDWM was proven by the experimental results and durable test.

• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.57 no.2
• /
• pp.235-238
• /
• 2008

This paper explores 28 nm MOSFET design for LSTP(Low Standby Power) applications using TCAD(Technology Computer Aided Design) simulation. Simulated results show that the leakage current of the MOSFET is increasingly dominated by GIDL(Gate Induced Drain Leakage) instead of a subthreshold leakage as the Source/Drain extension doping increases. The GIDL current can be reduced by grading lateral abruptness of the drain at the expense of a higher Source/Drain series resistance. For 28 nm MOSFET suggested in ITRS, we have shown Source/Drain design becomes even more critical to meet both leakage current and performance requirement.

• Journal of the Korea Society of Computer and Information
• /
• v.20 no.10
• /
• pp.107-112
• /
• 2015

There are numerous hazards and toxins have been produced in many forms along with life and working environments. Nevertheless, to remove theses hazards and toxins, there are many counteracting goods manufactured, but the result is limited in specific categories. Also it costs a lot of energy waste. In this paper, we propose a model that reduce wasting energy for detecting and getting rid of the harms. It adds a multi hazards auto-detection model for user friendly include the disable. It will be controlled the minimal sensed level of the harms by individuals through the proposed model. It can conduct detecting and eliminating the harms via eco-sensors pack which is adapted in different environments. As a result, the model works to produce only essential energy to clear the hazard and toxins as soon as the harms are generated and it leads to standby power.

• Proceedings of the KIEE Conference
• /
• summer
• /
• pp.1534-1536
• /
• 2004

오늘날 대부분의 기기들은 사용하지 않는 상태에서 단지 플러그만 꼽혀 있어도 전력을 소모하는데 이를 대기전력(standby power)라고 한다. 오디오와 비디오 제품의 경우 리모콘이나 시간예약 기능이 추가되어 전력을 소모하지만 대기전력절감을 위한 EPA, GEEA, AGO, IEA 및 국내의 KEMCO의 노력으로 off-line기기의 대기전력은 기술적으로 충분히 감소시킬 수 있는 단계에 이르렀다. 지능형 home networking 또는 smart home이 차세대 성장 동력으로 추진되는 등 정보가전기기의 Network화에 의한 대기전력은 점차 증가할 전망이다. 본 논문에서는 Networked기기의 대기전력절감의 최근 동향에 대해서 기술하였다.

• Proceedings of the KIPE Conference
• /
• 2013.07a
• /
• pp.397-398
• /
• 2013

Fairchild Green Mode off line buck switch for low standby power consumption and high reliability is presented. By reducing operating current and optimizing switching frequency, 20mW power consumption is achieved. High performance trans-conductance amplifier and green mode function improve the ripple and regulation in the output voltage. The conventional $FPS^{TM}$ buck and novel Fairchild buck switch are compared to show the improvement of performance. Experimental results are showed using 2W evaluation board.

• Proceedings of KOSOMES biannual meeting
• /
• 2018.06a
• /
• pp.45-45
• /
• 2018

• Proceedings of the KIPE Conference
• /
• 2009.11a
• /
• pp.90-92
• /
• 2009

• The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.3 no.4
• /
• pp.17-23
• /
• 1989

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2013.05a
• /
• pp.978-980
• /
• 2013

In this paper, we have presented a basic idea of a power shut-off client based on NFC (near field communication). For the first step of the system design, we have shown the conceptual diagrams of the hardware configuration and the software logic flow. This system can be applied to the integrated power control in home, office, school, factory, and apartment. The standby power shut-off system will bring saving in electrical energy and cost.