baber/WOPTO huggingface dataset:
Patent KR-20010031150-A (KR)
Title: 고분자량 폴리에스테르 성형 재료의 용도
IPC: C08G63/78
Filed: 1998-10-05
Abstract: 본 발명은 취입 성형, 프로필 압출 및(또는) 파이프 압출에 의한 성형체 제조를 위한 A) 결정화 열 방출의 반폭이 ≤5℃인 폴리알킬렌 아릴레이트, 특히 폴리부틸렌테레프탈레이트 80 내지 100 중량% 및 B) 다른 첨가제 0 내지 20 중량%를 함유하며, 구성성분 A) 및 B)의 중량% 합은 100%인, 열가소성 폴리에스테르 성형 화합물의 용도에 관한 것이다.  본 발명의 성형 화합물의 바람직한 용도는 광 유도관 외장의 제조이다.  본 발명은 또한 a) 방향족 디카르복실산 또는 그의 유도체와 글리콜과의 에스테르화 또는 재에스테르화, b) 예비축합, 및 c) 점도값 158 ml/g 이상으로 중축합하는 폴리에스테르의 3 단계 제조 방법에 관한 것이다.  반응은 단계 a) 및 b)에서 2개 이상의 온도 대역에서 수행된다.
Patent KR-20010024527-A (KR)
IPC: C08L23/12
Filed: 1999-07-29
Abstract: Disclosed is a polypropylene composition useful for making solid state oriented film. The composition comprises two predominantly isotactic polypropylenes with the melting point temperature of one of the polypropylenes being substantially lower than the melting point temperature of the other. In one embodiment of the composition the higher melting point polypropylene is made by Ziegler-Natta catalysis, while the lower melting point polypropylene is made by metallocene catalysis. Compared to polypropylene with similar melt flow rate and made by Ziegler-Natta catalysis, and solid state oriented film thereof, the composition provides a better balance of elevated temperature draw characteristics and physical properties of oriented film made therefrom. Thus, at the same or lower elevated temperature yield stress, oriented film of the composition exhibits improved properties such as stiffness, elongation-at-break, dimensional stability, and oxygen barrier. Also disclosed is a method for the manufacture of oriented, flexible packaging film. In the method a cast sheet is melt extruded from the composition, and, after cooling until it is solid, the cast sheet is stretched to the desired extent of orientation at a temperature which the sheet does not break while being stretched, but below the Tm of the composition. The resulting film then is cooled to at least the crystallization temperature of the lower melting point polypropylene.
Patent KR-20010033483-A (KR)
Title: 백색 미네랄 오일의 점토처리방법
IPC: C10G67/06
Filed: 1998-12-03
Abstract: RCS 규정에 부합되는, 오염도가 심한 백색 미네랄 오일을 예컨대 Tonsil CO 630G와 같은 산-처리된 벤토나이트 점토를 사용하여 처리할 수 있다.  이 처리방법으로 제조되는 백색 오일은 USP 등급의 백색 오일이다.
Patent KR-20010034286-A (KR)
Title: 위상 지연 보상 방법 및 장치
IPC: H03H17/02
Filed: 1999-09-23
Abstract: 본 발명은 아날로그 출력 신호(U S )를 이산 시간 스캐닝할 때 발생된 위상 지연을 보상하는 보상 방법에 관한 것으로서, 여기서 상기 출력 신호(U S )는, 스캐닝 주기를 갖는 스캐닝 신호(U A )를 유지하도록, 안티-앨리어싱-필터(2)를 통하여, 그후 스캐닝부(3)를 통하여 신호 처리가 적용되며, 다음과 같은 단계, 즉, 
     - 신호 유지를 위하여, 선행하는 스캐닝 주기의 스캐닝 신호를 고려함으로써, 스캐닝부(3)를 통하여 발생된 스캐닝 신호의 위상 지연을 보상하는 보상 단계와, 
     - 그후, 신호 유지를 위하여, 안티-앨리어싱-필터의 필터 시상수와, 스캐닝부(3)의 스캐닝 주기와, 선행하는 스캐닝 주기의 스캐닝 신호를 고려함으로써, 안티-앨리어싱-필터(2)를 통하여 발생된 스캐닝 신호의 위상 지연을 보상하는 보상 단계를 갖는다.
Patent KR-20010040527-A (KR)
Title: 기계적 인덱싱 및 디인덱싱 장치를 포함하는 전기 용접 핀셋
IPC: B23K11/31
Filed: 1999-02-02
Abstract: 본 발명은 용접 면에 대해 핀셋의 이동을 잠금 및 잠금 해제시키는 인덱싱(indexing) 및 디인덱싱(deindexing) 장치와 전극 사이에 각각 제공된 가동 아암 및 인덱싱 고정 아암(5)을 포함하는 유형의 전기 기계화 용접 핀셋에 관한 것이다. 
     본 발명은 인덱싱 및 디인덱싱 장치가 핀셋의 개방 및 폐쇄의 전기 제어 수단의 작용하에 상기 핀셋의 개방/폐쇄 움직임 동안 핀셋의 이동의 잠금 및 잠금 해제를 수행하기 위해 배치된 기계적 수단(1,2,3)을 포함하는 것을 특징으로 하는 용접 핀셋에 관한 것이다. 
     본 발명은 전기 기계화 용접 핀셋에 관한 것이다.
Patent KR-20010041447-A (KR)
Title: 증기 터빈의 밀봉 링
IPC: F01D11/00
Filed: 1999-02-22
Abstract: 증기 터빈 등의 회전기계로 회전부와의 사이에 배치되어 이용되는 밀봉 링에 관하여, 밀봉 링의 소정의 움직임을 정확히 실행하고, 밀봉 성능의 저하를 방지한다. 
     밀봉 링은 상하부 및 좌우부로 분할된 밀봉 링부편으로 구성되고, 각 밀봉 링부편면 사이에 마련된 상하 방향으로 가압되는 스프링에 의해, 각각의 분할편 면은 미끄럼 운동이 가능하게 접하도록 배치되고, 각 밀봉 링부편을 상하 방향으로 안내하는 밀봉 가이드를 마련하여 밀봉 링부편의 상호간의 충돌을 방지함과 동시에 부하시에 내측으로 이동하여 밀봉 핀과 대응면과의 틈새를 작게 한다.
Patent KR-20010034582-A (KR)
Title: 산화주석 입자
IPC: C30B25/00
Filed: 1999-03-08
Abstract: 본 발명은 다양한 산화 상태의 주석에 의해 제조되는 산화주석 나노구조에 관한 것이다. 구체적으로, 본 발명은 제조되는 단일상 결정 SnO 2 의 나노입자에 관한 것이다. 바람직한 산화주석 나노입자는 극도로 좁은 입자 직경 분포를 가지면서 약 5 nm 내지 약 100 nm의 평균 직경을 갖고 있다. 산화주석 나노입자는 레이저 열분해 장치를 사용하여 상당한 양으로 제조할 수 있다. 레이저 열분해에 의해 제조되는 나노입자는 추가 처리를 수행하여 입자의 나노 단위 크기를 파과하는 일 없이 입자의 특성을 변화시킬 수 있다. 나노 규모의 산화주석 입자는 평판 패널 디스플레이에 사용하기 위한 투명한 전극을 제조하는 데 유용하다.
Patent KR-20010052629-A (KR)
Title: 단안정성형 강유전성 능동 매트릭스 디스플레이
IPC: G02F1/141
Filed: 1999-06-08
Abstract: 본 발명은 smC* 상의 층에 수직인 분명하게 정의된 방향(2)을 갖는 모노도메인 형태의 액정층을 함유하는 단안정성 강유전성 능동 매트릭스 디스플레이에 관한 것이다.  본 발명은 smC* 층에 수직인 방향(z)과 네마틱 또는 콜레스테릭 상(N* 상)의 주요 방향(n)이 5°이상의 각을 형성함을 특징으로 한다.
Patent KR-20010052960-A (KR)
Title: 벤조[ｆ]퀴놀리논의 합성
IPC: C07C323/10
Filed: 1999-06-01
Abstract: 본 발명은 5α-리덕타제 억제제로서 효과적인 벤조퀴놀린-3-온 약제 및 그의 중간체의 제조 방법에 관한 것이다.
Patent KR-20020063457-A (KR)
Title: TAN SAN Water (CO2+H2O)
Inventor: HWANG JAE HWA
IPC: A23L2/54
Filed: 2001-01-29
Abstract: PURPOSE: Provided is carbonated water produced by adding carbon dioxide to mineral water, therefore indigestion can be treated effectively and digestion can be facilitated when a person drinks it. CONSTITUTION: The carbonated water is produced by introducing carbon dioxide into mineral water. Therefore, it has digestion effect without resulting in harmful effects on human, because it contains no sugar which can induce adult diseases.
Patent KR-20020067113-A (KR)
Title: Meat precocious method using grape wine
Inventor: SUNG HO YOUNG
IPC: A23L13/00
Filed: 2001-02-15
Abstract: PURPOSE: Provided is a method for aging meat by using grape wine to remove smell, tenderize flesh and give a light taste. CONSTITUTION: The method for aging meat comprises the steps of: mixing a small amount of lemon juice with grape wine; spreading the mixed liquid on meat which is cut in an appropriate size; vacuum-packing or packing it with a wrap; and aging it in a refrigerator of 2-4 deg.C for 20-26 hours.
Patent KR-20020067310-A (KR)
Title: Apparatus and method for shelf operation using IPC in communication system
Inventor: OH JEONG SEOP
IPC: H04Q3/56
Filed: 2001-02-16
Abstract: PURPOSE: A system and method for operating shelves using an IPC(Internal Processor Communication) in a communication system is provided to simplify the hardware module of a shelf and to reduce the traffic load of a system by operating the IPC between shelves, based on the TCP/IP between an operation equipment and shelves. CONSTITUTION: A system for operating shelves using the IPC in a communication system is comprised of an operation equipment(210) and a target equipment(220). The operation equipment(210) possesses control logic, selected by an operator, and executes associated control operations. The operation equipment(210) provides a user interface so that the operator can monitor the operation state of the system. Also the operation equipment(210), connected to the target equipment(220), executes TCP/IP communication through a LAN and controls all matters about system operation. The target equipment(220) comprises a master shelf(221) and generic shelves(224). The master shelf(221) takes exclusive charge of communication with the operation equipment(210). The IPC is made between the master shelf(221) and the generic shelves(224). As the TCP/IP communication of the target equipment(220) is achieved by the master shelf(221) only, the communication between the operation equipment(210) and the generic shelves(224) is made through medium of the master shelf(221) in the state that TCP/IP communication is connected with the IPC.
Patent KR-20010083195-A (KR)
Inventor: SUZUKI THUNEAKI
IPC: B05D1/26
Filed: 2001-02-20
Abstract: PURPOSE: To suppress the dispersion and variation of discharge, thereby improving the quality of coating. CONSTITUTION: A coating head is provided with a liquid accumulation part 11 formed in the bottom part of the coating head, a liquid discharge slit 12 made to communicate with the liquid accumulation part 11 and opening to the atmosphere, and a liquid feed passage, which is formed apart from and parallel to the liquid discharge slit 12 and one end of which is communicated with a liquid feed port 13 and the other end of which is made to communicated with the liquid accumulation part 11. The liquid feed passage comprises a first chamber 14 made to communicate with the liquid feed port 13 and extended so as to be inclined toward the end part in the longitudinal direction, a second chamber 15 connected to the first chamber 14 and having a width narrower than the width of the first chamber 14, and a slit 16, one end of which is connected to the second chamber 15 and the other end of which is made to communicate with the liquid accumulation part 11, and of which the width is narrower than that of the second chamber 15.
Patent KR-20020071584-A (KR)
Title: Ejection pin assembly for separating semiconductor chip
Inventor: CHO GYEONG BOK
IPC: H01L21/50
Filed: 2001-03-07
Abstract: PURPOSE: An ejection pin assembly for a separation of a semiconductor chip is provided to prevent a leakage of a vacuum by improving a connection point between an exhaust line and an inner space of a shaft. CONSTITUTION: An ejection pin assembly(200) comprises a pin holder(110) directly connected with a rear surface of a wafer(170) fixed with a tape, a holder block(120) fixed with the pin holder(110), a base block(130) fixed with the holder block(120) and a shaft(140) having an inner space(142). At this point, the inner space(142) is formed to connect a pin holder inner space(112) with an outer exhaust portion through the holder block(120) and the base block(130). At this point, a pin block(150) fixed with an ejection pin(152) is connected on the upper portion of the shaft(140).
Patent KR-20020071649-A (KR)
Title: Pyrolysis Tube and Pyrolysis Method for using the same
Inventor: CHAE JONG HYEON
IPC: B01F23/00
Filed: 2001-03-07
Abstract: PURPOSE: A pyrolysis reaction tube is provided which improves ethylene yield and reduces coke production amount without induction of excessive pressure drop, and a pyrolysis method using the pyrolysis reaction tube is provided. CONSTITUTION: In a pyrolysis reaction tube through which both hydrocarbon and steam pass to perform pyrolysis reaction, the pyrolysis reaction tube is characterized in that a mixing blade made by twisting two opposite edges of a plate material is longitudinally installed in the pyrolysis reaction tube. In a pyrolysis reaction comprising the steps of putting the mixture into a vaporizer(10) to vaporize the mixture after mixing hydrocarbon with water; preheating the gas vaporized in the vaporization step in preheaters(20,30); pyrolyzing the gas by passing the preheated gas into a pyrolysis reaction tube(40) in which a plurality of mixing blades made by twisting two opposite edges of plates material are installed; and condensing a pyrolyzed reaction product in a condenser(60), the pyrolysis method using the pyrolysis reaction tube is characterized in that reaction temperature applied to the pyrolysis reaction tube is in the range of 600 to 1000 deg.C, weight ratio of steam to hydrocarbon is 0.3 to 1.0, and LHSV (liquid hourly space velocity) is 1 to 20 hr¬-1 in the pyrolyzing step.
Patent KR-20020017906-A (KR)
Title: Golf swing training apparatus
Inventor: LEE DONG IK
IPC: A63B69/36
Filed: 2001-03-26
Abstract: PURPOSE: A machine for practicing golf swing is provided to allow a golfer to practice a full swing regardless of a height of the ceiling, to analyze the swing results of the golfer, and to correct the posture of swing. CONSTITUTION: The machine is comprised of a golf club(1) containing a shaft part(10), a grip part provided on the distal end of the shaft part, and a light generating device(30) installed on the tip end of the shaft part to project an imaginary shape of a golf club head; a light detecting device for detecting a light projected from the light generating device; and a focus adjuster(35) for adjusting the size of the imaginary shape of the golf club head by adjusting the focus of the light projected from the light generating device.
Patent KR-20020076364-A (KR)
Title: Processing of vinegar using sea tangle extract
Inventor: CHOI OK SU
IPC: C12J1/00
Filed: 2001-03-28
Abstract: PURPOSE: A method for producing vinegar using a tangleweed extract is provided, therefore the tangleweed vinegar contains a large quantity of sugar, iodine, potassium and sodium derived from the tangleweed. CONSTITUTION: The method for producing vinegar using a tangleweed extract comprises the steps of: pulverizing dried tangleweed; adding water into the pulverized tangleweed; boiling the mixture for 1 hour and filtering it with a filter paper(Whatman No. 2); regulating sugar content of the mixture to Brix 2.5 to produce a tangleweed solution; adding nutrient components for Acetobacter aceti 32409 into the tangleweed solution and dissolving them; autoclaving the mixture at 121 deg. C for 15 minutes and cooling it; inoculating Acetobacter aceti 32409 into the sterilized tangleweed solution; fermenting the solution at 30 deg. C for 1 week to produce seed vinegar; mixing the tangleweed solution with the seed vinegar in the ratio of 1:1; adding 5% glucose and 6% ethanol into the mixture; and fermenting the mixture at 30 deg. C for 20 days.
Patent KR-20010098454-A (KR)
Title: 반도체메모리장치와 테스트시스템 및 테스트방법
IPC: G06F12/16
Filed: 2001-04-04
Abstract: 본 발명의 목적은 메모리셀로부터 비트라인으로 독출된 아날로그데이터신호전위(비트라인판독전위)를 정밀하게 측정할 수 있는 반도체메모리장치를 제공하는 것에 있다.  본 발명에서, 센스부회로블록(140)이 메모리셀어레이(110)에서 비트라인쌍(예컨대, BLNk,BLTk)중 하나에서 발생한 데이터신호와 그 쌍의 다른 하나에서 발생한 기준신호를 차등증폭하고, 데이터가 독출된다. 비트라인들(BLN1,BLT1∼BLNn,BLTn)은 기준전위셋업회로블록(150)에 연결된다.  기준전위셋업회로블록(150)은 비트라인상의 기준신호의 전위로서 장치의 외부로부터 할당된 전위를 셋업한다.  기준전위셋업회로블록(150)으로 기준전위를 제어함으로써 차등증폭결과로부터 비트라인판독전위가 간접적으로 얻어진다.
Patent KR-20020078448-A (KR)
Title: Tunable optical filter
Inventor: LEE CHUNG GUK
IPC: G02B5/20
Filed: 2001-04-09
Abstract: PURPOSE: A variable optical filter is provided to make size thereof compact by utilizing a hill shape multi mode optical fiber as a lens to form a parallel light beam. CONSTITUTION: A variable optical filter includes a single mode optical fibers(101,108) for transmitting an optical signal and a hill shape multi mode optical fibers(102,107) for converting the optical signal into a parallel light beam, optical ferrules(103,109) for supporting the single mode optical fibers(101,108) and a hill shape multi mode optical fibers(102,107), a pair of reflecting mirrors(105,106) for transmitting an optical signal corresponding to a resonance frequency, a ferrule pedestal(110,111) for supporting the optical ferrule(103,109), a connector sleeve(104) for aligning an optical axis at the same time by aligning the optical ferrules(103,109), a piezoelectric actuator(112) for selecting a transmitted wavelength by controlling a distance between the reflecting mirrors(105,106) and a strain gauge for utilizing as a wavelength selection control means.
Patent KR-20020081769-A (KR)
Inventor: YOON GUN GU
IPC: A01K1/02
Filed: 2001-04-19
Abstract: PURPOSE: A dog house with a door is provided to freely control the entrance and exit of a pet dog, and to simplify a manufacturing procedure of the door, thus facilitating the installation of the door. CONSTITUTION: The dog house is constructed by a roof(10); a wall body(20) formed under the roof; and a door(30) coupled to the one side of the wall body with a hinge(21). The door comprises a guide(32) installed at the front side of a body(31), an opening and closing weight(33) installed so as to be moved along the guide, and a pair of stoppers(34) fixed at the both ends of the guide in order to restrict the secession of the weight.
Patent KR-20010099756-A (KR)
Title: 혈액투석 동안에 혈압을 안정화시키는 방법
IPC: A61K31/519
Filed: 2001-04-27
Abstract: 본 발명은 포스포디에스테라제 저해제를 사용하여 혈액투석 동안에 혈압을 안정화시키는 방법에 관한 것이다.
Patent KR-20020083352-A (KR)
Inventor: SON JONG HO
IPC: G11C8/06
Filed: 2001-04-27
Abstract: PURPOSE: An address input buffer is provided, which is appropriate to prevent an error in a chip operation due to a ground bouncing and at the same time to improve its speed. CONSTITUTION: A logic operation circuit is operated by receiving an input signal(pad) and a chip selection signal(csb), and is connected to a data output buffer(50) through a common ground voltage terminal(gndd). The first signal delay part delays an output signal of the above logic operation circuit. And a signal stabilization part is connected to the common ground voltage terminal and prevents a grounding bouncing from being generated in this part. The first signal delay part comprises the first and the second inverter connected each other.
Patent KR-20020084441-A (KR)
Title: The system for suppling warm water
Inventor: CHO SEONG JIN
IPC: F24D17/02
Filed: 2001-05-02
Abstract: PURPOSE: A system for supplying hot water is provided to reduce power consumption, and to improve energy efficiency by heating water flowing in a heat exchanger with high temperature and pressure refrigerant gas in driving the heat pump equipment. CONSTITUTION: A hot water supply system is composed of a water heater(W) having a water tank(300) storing water temporarily, and an auxiliary heater(350) heating water in the water tank; and a heat pump equipment(H) having an evaporator(210) vaporizing liquid refrigerant into low temperature and pressure refrigerant gas by absorbing heat, a gas compressor(220) compressing refrigerant gas into high temperature and pressure gas; a four-way valve(230) connected to the evaporator and the gas compressor through a refrigerant pipe(110) to guide direction of refrigerant, and a heat exchanger(400) connected to the evaporator, the gas compressor and the four-way valve through the refrigerant pipe to heat water from the water tank. Power consumption is reduced with assembling the heat pump equipment and the water heater, and energy efficiency is improved by cooling indoors with cooling heat in driving the heat pump equipment.
Patent KR-20020084573-A (KR)
Title: Shift lever of automatic transmission
Inventor: KIM DEOK GI
IPC: B60K20/04
Filed: 2001-05-03
Abstract: PURPOSE: A shift lever of an automatic transmission is provided to improve the quality by minimizing deformation with assembling parts of the shift lever through press-fitting, and to reduce parts, assembling process and expenses by injection-molding parts integrally. CONSTITUTION: A shift lever for an automatic transmission is composed of a shift lever pipe(2) installing a select knob operated by a driver, and an operating member(6) press-fitted to the lower part of the shift lever pipe, connected to a cable, and combined with a bracket(4) with rotating. The operating member has a pipe fixing part(20) fixing the lower part of the shift lever pipe, a cable connecting part(22) integrally connected to the pipe fixing part and a cable(32), and a hinge pipe part(24) integrally connected to the lower part of the pipe fixing part and combined with the bracket. Endurance is improved with preventing deformation by press-fitting parts, and parts are reduced with integrally forming the operating member.
Patent KR-20020085003-A (KR)
Title: the main is soft-shelled.and add germanium and chinese medicine material.and extract.
Inventor: LEE TAE HO
IPC: A61K35/12
Filed: 2001-05-03
Abstract: PURPOSE: A method for producing a snapping turtle extract using germanium-containing water and Chinese herbal medicines is provided. Whereby, the extract has effects on improving physical constitution, prevents aging of human skin and reducing stress. CONSTITUTION: A snapping turtle is washed with underground water disposed at a depth of 120m below the ground level containing germanium, mixed with Chinese herbal medicines containing Paeonia lactiflora Pall., Atractylodes macrocephala Koidz., Glycyrrhiza uralensis Fisch., Ligusticum chuanxiong Hort., Pueraria thunbergiana(Sieb. et Zucc.) Benth., Rehmanniae glutinosa Liboschitz, Pleuropterus multiflorus Turcz. and Zizyphus jujuba Mill var. inermis Rehder, aged for 240hr, extracted for 6hr or more and sterilized at 95deg.C or more for 1hr in the first stage. Thereafter, the extract is packed and sterilized at 90deg.C for 20min in the second stage.
Patent KR-20020085200-A (KR)
Title: A Plasma Display Panel Having A Discharge Gas Pressure Adjusting Means
Inventor: PARK HEON GEON
IPC: H01J11/12
Filed: 2001-05-07
Abstract: PURPOSE: A plasma display panel with an adjusting unit for adjusting the pressure of discharge-gas is provided to prevent cross-talk due to the increment of gap between upper and bottom plates and the change of characteristics due to the change of discharge conditions by adjusting the pressure of discharge-gas according to the variation of atmospheric pressure. CONSTITUTION: A through hole(28) is formed on a rear glass substrate(20). Around the through hole(28), an exhaust pipe(30) serving as an exhaust port and a pressure adjusting unit(40) serving as an inlet of discharge-gas are provided, which are made of a sealing member. The exhaust pipe(30) and the pressure adjusting unit(40) are integrated as one unit. The pressure adjusting unit(40) is comprised of a tube on which screw grooves(43) are formed, a grip(41) inserted into the tube, and a circular rubber packing(42) attached on one end of the grip(41).
Patent KR-20010074584-A (KR)
Title: floor product utilizing useless tire
Inventor: KIM SEUNG JUN
IPC: E04F15/10
Filed: 2001-05-09
Abstract: PURPOSE: A flooring member is provided to reduce a cost, to promote environmental protection and to have high elasticity by using waste tires. CONSTITUTION: A mixture mixing waste tire chips, a plastic binder and metal powder such as copper powder and aluminum powder, is molded in a plate shaped tile(10). With the metal powder, the tile efficiently intercepts water vein waves. A fabric(20) is layered on the tile. In detail, the mixture mixes 10 to 15wt% of pure copper powder and 1 to 3wt% of jade powder per 100wt% of waste tire chips in a mixer. Then, 10 to 15wt% of polyurethane resin and a hardening agent are added to the mixture.
Patent KR-20020088130-A (KR)
Inventor: PARK GI SEON
IPC: H05H1/36
Filed: 2001-05-17
Abstract: PURPOSE: A power supply for generating a plasma is provided to apply a high voltage by reducing a pulse width in a conventional micro pulse discharge type dust collector power supply by utilizing a saturable resonance reactor(Ls'), thereby obtaining a dust collector with improved dust collecting performance by generating a sufficient powerful plasma to discharge. CONSTITUTION: A power supply for generating a plasma by applying a pulse voltage generated by using a resonance circuit provided with at least one power semiconductor devices, at least one inductors(Lps,Ldc) and at least one capacitors(Cs,Cc) and a direct power for a bias voltage to electrodes includes a device for restricting a current change rate, when a current of the pulse voltage rises to a specific value of a rated current or when the current of the pulse voltage falls below the specific value, in order to prevent the power semiconductor device from shorting its life cycle and burning out when the pulse width is reduced by increasing the current change rate of the pulse.
Patent KR-20020092684-A (KR)
Inventor: CHO YEON HA
IPC: H01L21/02
Filed: 2001-06-05
Abstract: PURPOSE: An apparatus for exhausting gas is provided to easily and stably exhaust toxic gas existing in a chamber by forming a Venturi tube at an exhaust line. CONSTITUTION: The gas exhaust apparatus comprises a chamber(14), a vacuum line(22) formed between the chamber(14) and a pumping part(18), and an exhaust line(20) formed at other end of the chamber(14). The exhaust line(20) further includes a Venturi tube(10) and a solenoid valve(12). The Venturi tube(10) is inhaled toxic gas remaining in the chamber(14) and transferred the toxic gas. The solenoid valve(12) is injected air to the Venturi tube(10).