• 제어로봇시스템학회:학술대회논문집
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• 1999.10a
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• pp.259-261
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• 1999

An operational transconductance amplifier (OTA) based precision full-wave rectifier circuit is presented in this article. The proposed circuit has a very sharp corner in the DC transfer characteristic and simple configuration comprised three OTAs and one current mirror. The temperature dependence of the OTA transconductance is reduced. Experimental results demonstrating the characteristic of the circuit are included.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1997.04a
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• pp.49-54
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• 1997

In this paper, vibration characteristics are considered about thermo-visco-plastic material under periodic thermal loading. When in high temperature region, thermo-visco-plastic structure has a periodic thermal loading, it is very important in an accumulated structure like a spacestation to investigate vibration characteristic, stress-strain characteristic is considered in various 2-D model by finite element method.

• Bulletin of the Korean Space Science Society
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• 2004.10b
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• pp.227-230
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• 2004

The regulator that was designed for space use must be operating on the severe circumstance. For example, operating temperature is below 90K and operating pressure is 20.7 MPa. The design of regulator for liquid propulsion system was accomplished and dynamic characteristic was analyzed successfully.

• Proceedings of the KIEE Conference
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• 1986.07a
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• pp.400-402
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• 1986

• Proceedings of the KWS Conference
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• 1997.05a
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• pp.27-32
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• 1997

• Proceedings of the KWS Conference
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• 1995.10a
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• pp.231-234
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• 1995

• Proceedings of the Materials Research Society of Korea Conference
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• 2001.05a
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• pp.36-36
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• 2001

• 한국전기화학회:학술대회논문집
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• 2001.06a
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• pp.139-144
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• 2001

• Proceedings of the KIEE Conference
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• 1984.07a
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• pp.249-252
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• 1984

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2002.11a
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• pp.112-117
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• 2002