baber/WOPTO huggingface dataset:
Patent KR-20010008235-A (KR)
Inventor: HWANG HYUN JIN
IPC: E02B7/20
Filed: 2000-11-16
Abstract: PURPOSE: A sluice gate opening and closing apparatus is provided to simplify the opening and closing operation of the sluice gate with minimized manpower by mounting an opening and closing plate which lifts or lowers automatically with relation to a shaft mounted on a fixing plate according to a level of water passing through a watercourse. CONSTITUTION: A sluice gate opening and closing apparatus includes an opening and closing plate(11) for opening and closing an arterial water course according to a level of water passing through the arterial water course, a flotage(12) mounted on a front surface of the opening and closing plate for moving the opening and closing plate according to the water level, a pair of supporting rods(16a,16b) rotatably mounted on shafts(15) of a pair of fixing plates(14) mounted at both upper ends of the arterial watercourse and having an end fixed at upper and lower parts of a rear surface of the opening and closing plate, weights(17) mounted at the other ends of the supporting rods for keeping balance with the opening and closing plate, and a water case connected to a through hole(13) formed on the flotage and the opening and closing plate via a connection hose(19).
Patent KR-20010008265-A (KR)
Inventor: KIM HYUN YONG
IPC: C02F1/30
Filed: 2000-11-20
Abstract: PURPOSE: A water treatment system using solar, ultraviolet and photocatalyst is provided. According to this method, the sun (80) is used as a light source of photocatalytic reaction when the intensity of solar light is strong in the daytime, and an ultraviolet lamp (20) is used as the light source of photocatalytic reaction when the intensity of solar energy is weak or at night, and an aluminum reflecting plate (30) is installed under the ultraviolet lamp (20) to effectively use the light source. Therefore, the energy is saved. Also, a media fixing module (11) is filled with a photocatalytic media (10) coated with the titanium oxide. CONSTITUTION: The water treatment system comprise of a media for fixing module (11) filled with the photocatalytic media (10) coated with the titanium oxide; an automatic control device (50) operated by a light sensor (30) and which supply power into the ultraviolet lamp (20) when the intensity of solar energy is weak; a slope controller (61) for effectively collecting the solar energy as controlling the grade of the photocatalytic reaction device.
Patent KR-20020041844-A (KR)
Title: Triodic Rectifier Switch
Inventor: LEE CHUNG HUN
IPC: G09G3/36
Filed: 2000-11-29
Abstract: PURPOSE: A triode rectifier switch is provided to improve an electric characteristic of the triode rectifier switch by reducing off-current due to reduction of self-leakage current. CONSTITUTION: The first diode(D1) is connected with a data signal line. The second diode(D2) is connected with a display pixel as a load stage. A bias resistance(R1) is connected with anode stages of the first and the second diodes(D1,D2). A switch signal line is connected with the bias resistance(R1). A reset line is connected with the display pixel through the third diode(D3). The fourth diode(D4) is directly connected with the second diode(D2) in order to reduce the off-current of the display pixel. The third diode(D3) is connected with the reset line. The fifth diode(D5) is connected with the third diode(D3) or one or more diode is connected with the data line.
Patent KR-20020041853-A (KR)
Title: Automatic Site of the public opinion census
Inventor: CHOI HONG CHEON
Filed: 2000-11-29
Abstract: PURPOSE: A public-opinion poll site is provided to offer various statistical data related with an issue by variably processing various public opinions. CONSTITUTION: The site issues regulation and public opinions on an object. An authenticated member of the site is provided with a profit. Thus, the reliability of the member is enhanced. An issue has structure to make all members free. An issue is generated by the steps of a member registering materials to make an issue and another member estimating the propriety of the issue. If the grades scored by members approach a specific level, the issue is adopted to a public-opinion poll. Members discuss the issue and vote against or to the issue. The interest and propensity on the issue are analyzed. The issue is discussed by members different in an age, an area, a job and a gender. Therefore, a public-opinion poll is analyzed in various faces and is performed in a short time.
Patent KR-20010074017-A (KR)
Title: Non-impregnated transformer manufacturing method
Inventor: CHOI BU SIK
IPC: H01F27/28
Filed: 2000-12-12
Abstract: PURPOSE: A method for manufacturing non-impregnated transformer is provided to achieve an in-advance prevention against vibration noise and rust, while reducing manufacturing cost. CONSTITUTION: A method comprises the first step of spraying rust preventive liquid and forming a rust preventive layer(3) onto surfaces of an E-type core(1) and an I-type core(2) which are manufactured by pressing a steel plate; the second step of stacking E-type and I-type cores into a layer having a height corresponding to the hole width of a bobbin(4) into which cores are to be inserted, and forming one or more embossed portions(6) through a press caulking process; the third step of inserting the E-type core into the hole of the bobbin having a coil(5) wounded onto the bobbin, and injecting a double-fluid bond(7) onto an intermediate support piece of the E-type core; the fourth step of putting the I-type core onto the opening of the E-type core, and attaching the intermediate portion of the I-type core to the upper surface of the intermediate support piece of the E-type core through the double-fluid bond; and the fifth step of welding the upper surface of the E-type core and the bottom surface of the I-type core.
Patent KR-20010082582-A (KR)
Title: Photosensitive resin composition
Inventor: KUNIMOTO KAZUHIKO
IPC: C07D295/08
Filed: 2000-12-15
Abstract: PURPOSE: Provided is a photosensitive resin composition, which shows reactivity to photopolymerization and excellent resolution property, and which can be developed with alkali and is easy to handling. CONSTITUTION: The composition comprises (A) at least one of alkali soluble binder resin, prepolymer or monomer component, (B) at least one of compound of formula(1) or 2, and (C) photopolymerizable compound. In the formulas, R1 is particularly C4-C9 cycloalkanoyl, C3-C12 alkenoyl or unsubstituted or substituted benzoyl; each Ar1 represents unsubstituted or substituted C6-C20 aryl or C6-C20 aryloyl; x represents 2 or 3, M1 represents phenylene or naphthalene optionally substituted with especially OR3, SR4 or NR5R6 when x represents 2, or x represents an optionally substituted trivalent group when x represents 3; R3 represents, for example hydrogen or C1-C12 alkyl, C2-C6 alkyl substituted with especially -OH, -SH, -CN, C3-C6 alkenoxy or -OCH2CH2CN; R4 represents, for example hydrogen, C1-C12 alkyl, C3-C12 alkenyl, cyclohexyl, or unsubstituted or substituted phenyl; R5 and R6 individually represent hydrogen, C1-C12 alkyl, C2-C4 hydroxyalkyl, C2-C10 alkoxyalkyl, C3-C5 alkenyl, C3-C8 cycloalkyl, phenyl-C1-C3 alkyl, C1-C4 alkanoyl, C3-C6 alkenoyl, benzoyl, or unsubstituted or substituted phenyl.
Patent KR-20010067390-A (KR)
Title: Optical disk driving device
Inventor: ARIYOSHI YUJI
IPC: G11B7/095
Filed: 2000-12-18
Abstract: PURPOSE: An optical disk drive is provided to perform the recording/playing operation with a high accuracy even on a curved disk without using a tilt mechanism. CONSTITUTION: A clamper(2) includes a center clamper(2a) holding a disk(9) via a turntable(1) and a large clamper(2b) touching the outer circumference of the disk and pressing the disk when the disk has a curve. The curve of the disk is corrected by pressure so that an angle between a laser beam(L) and the information surface of the disk can be kept within a fixed range. The disk can be played back with a high accuracy.
Patent KR-20020050408-A (KR)
Title: apparatus and method for controlling light of display in mobile communication set
Inventor: KWAK UI SIK
IPC: H04B1/40
Filed: 2000-12-21
Abstract: PURPOSE: An apparatus and method for adjusting the brightness of the display part in a mobile terminal is provided to automatically adjust the brightness of the display part according to peripheral illumination. CONSTITUTION: If a user sets the lighting of the display part(S310), the mobile terminal judges whether a lighting on signal is supplied(S320). If the lighting on signal is supplied, the mobile terminal drives the sensor of a detection part and detects peripheral illumination(S340). Then the mobile terminal amplifies an analog voltage signal corresponding to the detected peripheral illumination through an amplifier(S350) and converts the amplified analog signal into digital data through an analog/digital converter(S360). The mobile terminal receives the data corresponding to the peripheral illumination from the detection part(S370) and outputs a PDM(Pulse Density Modulation) signal(S380). Then the mobile terminal converts the PDM signal into an analog signal through an RC filter and adjusts the brightness of the display part(S390).
Patent KR-20010025404-A (KR)
Title: System and Method for Virtual Advertisement Insertion Using Camera Motion Analysis
Inventor: LEE HYEONG SEOK
Filed: 2000-12-22
Abstract: PURPOSE: An apparatus and a method for inserting a virtual advertisement using an analysis of a camera operation are provided to enhance effects of an advertisement by reading an image screen by a frame unit and securing an advertisement inserting position and inserting the advertisement into the position. CONSTITUTION: A moving picture shown in a sports ground(110) is photographed in real time and an image signal transmitted from a digital camera(10) is received and an area for advertising the image is searched(50). A movement of the camera(10) is chased(60). An inserting module(65) is divided into an object image transformation mode(70), an obstacle detecting module(90) and an inserting mode(80). If a video frame is inserted, the area for advertising the image is searched(50). If the area is selected, a movement of the camera is forecasted by comparing to the prior frame(60). The virtual advertisement image to be inserted is selected from the pre-set advertisement image database(100) and the image is transformed(70). An obstacle positioned at the inserted portion is detected and an object occlusion mask is prepared(90). The virtual advertisement is inserted in the selected position by using a mask as a key(80).
Patent KR-20020051786-A (KR)
Title: Device and the method for injection pump controlling of diesel engine in vehicle
Inventor: LEE HAE UK
IPC: F02D1/10
Filed: 2000-12-23
Abstract: PURPOSE: A device and method for controlling an injection pump of a diesel engine in a vehicle is provided to improve the power output and fuel efficiency and reduce an exhaust gas. CONSTITUTION: In a device and method for controlling an injection pump(10) of a diesel engine, the side(30) of high pressure and the side(40) of low pressure of a timer piston(20) are connected to be penetrated, and actuators(50,60) are respectively installed at the side of high pressure and the side of low pressure. A device and method for controlling an injection pump of a diesel engine comprises a detecting unit detecting the vehicle operation state which is variably output, an engine control unit which outputs a prescribed control signal to the detecting unit to receive the detected signal from the detecting unit and outputs a prescribed control signal according to the change of the engine RPM by receiving the detected signal of the opening degree of an acceleration pedal and the engine RPM, and an operation unit varying the ON/OFF state by being synchronized with the prescribed control signal output from the engine control unit so that intercepting the pressure of the fuel of intake side of a feed pump supplied from the side of low pressure.
Patent KR-20020054075-A (KR)
Title: Method for linking on-line game and diet program
Inventor: CHOI MIN HYEOK
IPC: G06Q50/10
Filed: 2000-12-27
Abstract: PURPOSE: A diet program and an online game connection method is provided to input a caloric intake and an exercise quantity via a portable diet manager and other communication device, and to reflect the input data on the online game. CONSTITUTION: The method comprises steps of a user, registered as a member of a diet management server, logging in the diet management server via a user computer or a mobile phone(S410), the diet management server offering the user a menu selection screen(S420), the user inputting caloric intake data at the server by using a portable diet manager, inputting a food menu or directly inputting calories data(S440), the user selecting a game, the server offering the user game data different according to a health state determined based on the input data(S430), and the user logging out the server if the user stopping playing the game and inputting the calories data(S450). The input caloric intake and exercise quantity is connected to the game data, so the game player has an advantage or a disadvantage according to a comparison of the caloric intake with the exercise quantity. The game data is a kind of a weight factor calculated from the caloric intake and the exercise quantity.
Patent KR-20020040522-A (KR)
Title: Interconnect structure having fuse or anti-fuse links between profiled apertures
Inventor: JANUSZ B LIBER KOWSKI
IPC: H01R12/52
Filed: 2000-12-29
Abstract: PURPOSE: An interconnect structure is provided to obtain fuse and anti-fuse links for accurately and precisely defining the locations at which the fuse and anti-fuse processes are performed, to thereby allow for further down-scaling of the interconnect stack. CONSTITUTION: An interconnect stack structure comprises a plurality of conductive planes(12a to 12h); a plurality of insulating planes(14a to 14g) which are alternatingly disposed between the conductive planes; a plurality of conductive vias(20) extending vertically to the conductive planes and the insulating planes; and profiled apertures(24) extending vertically to the conductive planes and the insulating planes, wherein the profiled apertures define fuse links in the conductive planes, and each of the fuse links has a rapidly narrowed waist, such that a fusing current(If) passing through the fuse link generates a fused break substantially at the rapidly narrowed waist.
Patent KR-20020058944-A (KR)
Title: Spark-gap switch control system
Inventor: KIM MAENG HYEON
IPC: H03K3/537
Filed: 2000-12-30
Abstract: PURPOSE: A control device for a spark gap switch is provided to improve a time limit and the accuracy of the calculation at the same time by designing the control device provided with an analog part and a digital part in such a way that the analog part performs a high speed calculation and the digital part performs a calculation required to a high accuracy. CONSTITUTION: A control device for a spark gap switch provides an analog part(101) for calculating a gradient of a test current inputted from a preset calculation algorithm and a time of a required current zero point, a digital part(102) for performing a various and accurate calculation based on the inputted time and the test condition and a waveform rectifying part(115a,115b) for converting the output from the analog part(101) into a time scale and regenerating the time scale into an independent electrical signal and an optical signal. The control device is capable of predicting precisely the current zero point without depending on the changes of the test conditions by calculating the input signal and the gradient of the input signal, separately.
Patent KR-20010023192-A (KR)
IPC: E21B25/00
Filed: 1998-08-22
Abstract: A hydrostatic working device for taking samples from the bottom of the sea. The working device has an outer tube (1), the cylinder tube (1), the cylinder tube with lead-through (5 and 7), and an inner tube (2), the sampling tube with a piston, whereby the space between the outer tube (1) and the inner tube (2), with the piston at the upper end, constitutes a low pressure chamber (29) filled by air under a moderate pressure, in order to keep the sampling tube (2) in an upper position until the valve opens for a working stroke. When the working device is used as a corer the sampling tube is at its lower end equipped with a catcher (4). When the tool is used as a CPT the lead-throughs (5 and 7) are replaced by (20 and 40) and the piston (3) with a piston (19), and the sampler tube (2) is replaced by a probe, and a choke valve (14) is replaced by a pressure compensated volumetric flow valve (39).
Patent KR-20010023751-A (KR)
Title: 클래딩 시스템용 가스켓
IPC: E06B3/62
Filed: 1998-09-16
Abstract: 본 발명은 압출물들(10)이 서로 소정 각도를 형성하도록 압출물들(10)을 연귀이음(mitring)시키고, 각 압출물들의 배면 부분을 제거시키며, 연귀이음된 압출물들을 금형에 위치시키고, 압출물들을 서로 접착시켜서 소정의 연결형태를 이루도록 수지재(resin material)를 사출시키는 것을 포함하여 두개의 압출물 사이에 연결부(32)를 형성하는 방법이 제공된다. 
     본 발명에 따른 연결부의 전면(24)이 본래의 압출물로 완전히 제조되기 때문에 상승된 눈에 보이는 선들, 색깔 차이, 표면 차이, 또는 색깔 조화의 문제점들이 없다. 더욱이, 본 발명의 방법은 라운드 된 내측 부분보다 오히려 완전 직각인 모서리가 제조되는 것을 가능하게 된다.
Patent KR-20010030747-A (KR)
Title: 짚을 펄프로 가공하는 방법 및 이로부터 제조된 종이제품
IPC: D21C5/00
Filed: 1998-09-30
Abstract: 본 발명은 짚펄프를 예비가공 및 가공하고 동물 먹이로 적합한 부산물을 형성하는 방법을 제공한다.  본 발명은 또한 짚펄프를 포함한 종이제품을 제공한다.  본 발명에 따르면 짚펄프가 부식제 부재 또는 소량의 부식제 존재하에서 짚조각을 증기에 의해 파열시킴으로써 형성된다.
Patent KR-20010034118-A (KR)
IPC: C08L71/12
Filed: 1999-01-14
Abstract: 본 발명은 (a) 하나 이상의 비닐리덴 방향족 단량체 또는 (b) 하나 이상의 비닐리덴 방향족 단량체와 하나 이상의 입체 장애 지방족 비닐리덴 단량체의 혼합물 5 내지 65몰%, 및 탄소수 2 내지 20의 하나 이상의 지방족 α-올레핀 35 내지 95몰%를 포함하는 단량체 혼합물을 중합시킴으로써 제조된 하나 이상의 상호중합체; 및 방향족 폴리에테르 및 임의로 (a) 비닐리덴 방향족 단량체의 하나 이상의 단독중합체, (b) 하나 이상의 비닐리덴 방향족 단량체의 하나 이상의 상호중합체, (c) 하나 이상의 비닐리덴 방향족 단량체와 하나 이상의 입체 장애 지방족 비닐리덴 단량체의 하나 이상의 상호중합체, (d) 충격 개질제를 추가로 포함하는 (a-c)중 하나 이상의 성분, 또는 (e) 방향족 폴리에테르 및 (a-d)중 임의의 둘 이상의 성분의 혼합물을 포함하는 조성물을 포함하는 블렌드에 관한 것이다.  블렌드는 또한 하나 이상의 임의의 충격 개질제 및 하나 이상의 임의의 가공 보조제를 포함한다.  블렌드는 접착제, 필름, 취입 성형된 제품 및 사출 성형된 제품과 같은 제조품의 제조에 유용하고, 개선된 고온 사용성으로 특징된다.
Patent KR-20010040807-A (KR)
Title: 액체로부터 고체를 제거하는 필터
IPC: B01D29/90
Filed: 1999-04-15
Abstract: 워터가 정화되기 위한 입구(42)를 갖는 케이싱(18)을 구비한 필터가 개시되어 있다. 워터로부터 고체 물질을 제거하는 제1단의 필터(12,16,58)가 위치한다. 워터가 초음파 필터링 혹은 마이크로 필터링 및/또는 역삼투되도록 제1단의 필터에서 제2단의 필터(66)로 워터가 흐른다.
Patent KR-20010040930-A (KR)
Title: 열가소성 플루오로 중합체의 혼합물
IPC: C08L27/12
Filed: 1999-02-06
Abstract: 테트라플루오로에틸렌과 용융 지수가 30 이상인 퍼플루오로 알킬 비닐 에테르 단위로 이루어지는 고분자량 공중합체와의 혼합 성분으로서 적합한, 사출 성형에 의한 성형품 또는 압출에 의한 성형품을 제조하기 위한 저분자량 공중합체(고분자량 공중합체와 동일한 단량체들로 이루어짐).
Patent KR-20010041160-A (KR)
Title: 휴대폰용의 전원 공급 어셈블리
IPC: H01M10/44
Filed: 1999-02-22
Abstract: 본 발명의 휴대폰은 전화기에 부착식으로 부착된 내부 및 외부 배터리를 가진다.  전화기의 입력부에 각각의 배터리를 접속시키는 것을 제어하는 전화기의 제어 유니트는 외부 배터리의 전압을 검출하는데 따른다.  외부 배터리가 소정의 최소값 이상으로 제공될 때마다 외부 배터리는 전화기를 동작시키기 위해 전원을 공급하도록 전화기의 입력에 접속될 것이다.  따라서 내부 배터리의 수명은 연장된다.  외부 배터리의 전압이 최소값 이하로 떨어질 때 또는 외부 배터리가 제거될 때 상기의 유니트는 내부 배터리 전력을 자동으로 스위칭한다.  따라서 전화기가 온이거나 통화중일 경우에 외부 배터리는 전화기에 대한 전원 공급을 중단하지 않고 변경될 수 있다.
Patent KR-20010042302-A (KR)
IPC: H01H9/44
Filed: 1999-03-26
Abstract: 스위치에 있어서, 스위치 하우징에 수용되고 투명한 창을 통해 볼 수 있는 상호 작용하는 접촉 단자를 적어도 한 셋트를 갖고, 접촉 단자는 창을 향해 가는 전류 전달 스트립의 자유 단부에 배치되며, 스트립의 적어도 하나는 접촉 단자에 인접한 U자형 섹션을 가지고, U자형 섹션의 개방부는 창으로 부터 벗어나는 방향이며, 적어도 하나의 스트립의 U자형 섹션의 가지(Limb) 사이에 자성 물질로 만들어진 평판이 배치되는 것을 특징으로 하는 스위치를 제공한다.
Patent KR-20020057722-A (KR)
Inventor: KWON HYUK BOK
IPC: B23Q3/00
Filed: 2001-01-05
Abstract: PURPOSE: An adjusting guide post is provided to reduce the fault rate of the adjusting guide post even when a diameter of a hole is enlarged by adjusting the diameter of the hole through rotating a bolt. CONSTITUTION: An adjusting guide post can remarkably improve the quality of metal machine components. When a diameter of a hole is enlarged, the diameter of the hole can be adjusted by rotating a bolt. The adjusting guide post is fabricated by using iron steel. The adjusting guide post can be exported to the abroad and can increase the employment. The adjusting guide post can be provided with a screw or without the screw.
Patent KR-20010087757-A (KR)
Title: Apparatus and method for issuing, authenticating securities et al. using digital watermarking
Inventor: CHOI JONG UK
IPC: G03G21/04
Filed: 2001-01-12
Abstract: PURPOSE: An apparatus and a method for issuing and certifying marketable securities using digital water marking are provided to allow a user to rapidly and safely receive the marketable securities in on-line manner, and to directly use the printed marketable securities in off-line manner. CONSTITUTION: The apparatus for issuing and certifying marketable securities using digital water marking consists of a marketable securities issue device(110), a terminal(120) communicating with the issue device by using a network, and an output device(130) for outputting the marketable securities as a paper form. The issue device comprises a digital file generating part(111) for generating a digital file according to an issuing option selected from the terminal by a user, a water mark generating part(112) for generating a watermark corresponding to the selected issue option, a water mark inserting part(113) for inserting the watermark to the digital file by using a robust watermarking technique, a fragile watermarking technique, and a semi watermarking technique, and an output digital file generating part(114).
Patent KR-20020067360-A (KR)
Title: A tray vibration preventing structure for disk drive
Inventor: SONG GEUN HYEOK
IPC: G11B33/08
Filed: 2001-02-16
Abstract: PURPOSE: A structure of preventing the vibration of a tray in a disk drive is provided to recover a gap between a tray and an upper chassis, so as to effectively prevent the vibration of the tray generated while operating the disk drive and smoothly perform entrance and ejection operations of the tray. CONSTITUTION: A chassis configures an external view. A tray(40) movable to the internal and external of the chassis loads a disk thereon and moves the disk. A spacer unit installed in one side of the tray maintains a gap between the tray and the chassis with elasticity of a coil spring. In the spacer unit, the coil spring is installed inside a guide groove(50) formed to be open toward an upper surface of the tray. And a projection ball(54) accepted within the guide groove is projected to the external of the guide groove with the elasticity of the coil spring, and a front end thereof contacts with the chassis.
Patent KR-20010098401-A (KR)
Title: 샤프 펜슬 및 그 심 보호 부재의 제조 방법
IPC: B43K23/08
Filed: 2001-03-09
Abstract: 본 발명에 따른 심 보호 부재는, 심 보호 부재 내에 충전한 수지의 일부를 레이저빔으로 제거하고 길이 방향으로 구멍을 형성한 것, 수지 튜브 또는 파이프의 적어도 바깥쪽에 금속을 피복한 것, 또는 수지 튜브 또는 파이프의 적어도 바깥쪽에 도전성 막을 형성하고 이 도전성 막 위에 금속을 피복한 것이므로, 생산상의 변동도 적다.  또한, 심 보호 부재 선단부의 내접원 직경을 좁힘으로써, 수지층이 압축되고 심에 대한 저항력이 증가하여 필기시에 짧은 심의 흔들림이 발생하지 않는다.  또한, 심 보호 부재 선단부의 수지층을 일부 제거함으로써 수지층의 두께가 얇아지기 때문에, 수지층의 압축율이 작아지고 짧은 심의 흔들림을 더 잘 없앨 수 있다.
Patent KR-20010093047-A (KR)
Inventor: YONEDA TATSUO
IPC: H01L21/8234
Filed: 2001-03-16
Abstract: PURPOSE: To provide a power semiconductor device which can prevent the thermal breakdown of a power MOSFET when the gate potential of the power MOSFET is not fixed. CONSTITUTION: The power semiconductor device comprises a power MOSFET 11, a series resistor R1 and Zener diode 14 connected between the drain and the source of the power MOSFET 11, a resistor R2 connected between the gate and the source of the power MOSFET 11, and a series resistor R3 and MOS transistor 15 connected between the gate and the source of the power MOSFET 11. The joint of the resistor R1 and the Zener diode 14 is connected to the gate of the MOS transistor 15.