Jae-Kap Jung
Korea Research Institute of Standards and Science
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Publication
Featured researches published by Jae-Kap Jung.
conference on precision electromagnetic measurements | 2010
Sung-Won Kwon; Mun-Seog Kim; K.-T. Kim; Jae-Kap Jung
AC-DC transfer standard and micro-potentiometer are widely used for AC voltage standard at low level. Input impedance and 50-Ω load dependency of the standard are discussed for the ac voltage application below 200 mV and 1 MHz. The load dependency of the unit reaches 385 µV/V at 1 MHz, and this loading error should be corrected when calibrate the 50-Ω AC source using the standard.
Journal of Sensor Science and Technology | 2005
Sung-Won Kwon; Jae-Kap Jung; Mun-Seog Kim; Kye-Tae Kim; Je-Cheon Ryu
We have developed a dual-channel type automatic measurement system to evaluate AC-DC current transfer difference of the thermal current converter(TCC) which is primary standard of AC current. The output drift effect of the TCC is minimized by measuring simultaneously the output voltages of two TCCs using voltmeter. Furthermore, the offset voltage of the voltmeter is cancelled nearly out by taking the average values of two outputs of TCCs measured with the forward-reverse directions using dual channel scanner. The uncertainties of the automatic system were 7 to for 3 mA to 10 A at 40 Hz to 20 kHz, which were evaluated by the comparisons between adjacent range of TCCs and inter-comparison with national measurement institute of Germany(PTB). The capability for ac-dc transfer difference measurement was improved by one order compared with that for the manual ac-dc measurement system.
The Transactions of the Korean Institute of Electrical Engineers | 2007
Jae-Kap Jung; Sang-Hwa Lee; Sung-Won Kwon; Jeon-Hong Kang; Myungsoo Kim
The Transactions of the Korean Institute of Electrical Engineers | 2009
Yoon-Hyoung Kim; Sang-Gil Han; Jae-Kap Jung; Jeon-Hong Kang; Sang-Hwa Lee; Sang-Ok Han
The Transactions of the Korean Institute of Electrical Engineers | 2009
Yoon-Hyoung Kim; Sang-Gil Han; Jae-Kap Jung; Sang-Ok Han
The Transactions of the Korean Institute of Electrical Engineers | 2008
Sang-Hwa Lee; Sang-Gil Han; Jae-Kap Jung; Jeon-Hong Kang; Yoon-Hyoung Kim; Jin-Hye Jeong; Sang-Ok Han
The Transactions of the Korean Institute of Electrical Engineers | 2008
Sang-Gil Han; Yoon-Hyoung Kim; Jae-Kap Jung; Sang-Ok Han
The Transactions of the Korean Institute of Electrical Engineers | 2008
Jae-Kap Jung; Sang-Hwa Lee; Jean-Hong Kang; Myungsoo Kim; Yoon-Hyoung Kim; Sang-Gil Han; Sang-Ok Han
The Transactions of the Korean Institute of Electrical Engineers | 2008
Yoon-Hyoung Kim; Sang-Gil Han; Jae-Kap Jung; Sang-Ok Han
The Transactions of the Korean Institute of Electrical Engineers | 2008
Yoon-Hyoung Kim; Sang-Gil Han; Jae-Kap Jung; Sang-Ok Han