KR930003561Y1 - Focus voltage supply circuit for monitor - Google Patents

Focus voltage supply circuit for monitor Download PDF

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Publication number
KR930003561Y1
KR930003561Y1 KR2019880004644U KR880004644U KR930003561Y1 KR 930003561 Y1 KR930003561 Y1 KR 930003561Y1 KR 2019880004644 U KR2019880004644 U KR 2019880004644U KR 880004644 U KR880004644 U KR 880004644U KR 930003561 Y1 KR930003561 Y1 KR 930003561Y1
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South Korea
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voltage
crt
output
horizontal
focus voltage
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KR2019880004644U
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Korean (ko)
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KR890020208U (en
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이강우
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주식회사 금성사
최근선
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/26—Modifications of scanning arrangements to improve focusing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/005—Power supply circuits
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/04—Deflection circuits ; Constructional details not otherwise provided for
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting

Abstract

내용 없음.No content.

Description

모니터의 초점전압 공급회로Monitor's Focus Voltage Supply Circuit

제1도는 종래의 초점전압 공급 회로도.1 is a conventional focus voltage supply circuit diagram.

제5도는 본 고안의 초점전압 공급 회로도.5 is a focus voltage supply circuit diagram of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

11 : 수평 편향부 12 : 플라이백 트랜스11 horizontal deflection 12 flyback trance

13 : 초점전압 공급부 14 : 브라운관13: focus voltage supply unit 14: CRT

15 : 수직편향부 16 : 라링톤 증폭부15: vertical deflection portion 16: Larlington amplifier

17 : 출력부 18 : 캐소코드 증폭부17: output section 18: the cathode code amplification section

TS11, TS12: 트랜스TS 11 , TS 12 : trance

본 고안은 컴퓨터의 주변장치로 사용되는 모니터에 있어서, 브라운관의 초점전극 즉, 제4전극에 초점전압을 공급하는 모니터의 초점전압 공급회로에 관한 것이다.The present invention relates to a focus voltage supply circuit of a monitor that supplies a focus voltage to a focus electrode of a CRT, that is, a fourth electrode, in a monitor used as a peripheral device of a computer.

종래의 초점전압 공급회로는 제1도에 도시된 바와 같이 수평동기신호(HS)가 입력되는 수평편향용 집적소자(1)의 출력단자가 트랜지스터(TR1)의 베이스에 접속되고, 트랜지스터(TR1)의 콜렉터가 직렬로 접속된 수평편향코일(HDL), 콘덴서(C2) 및 수직크기조절용코일(L1)에 접속됨과 아울러 플라이백 트랜스(2)의 입력단자(I1)에 접속되며, 플라이백 트랜스(2)의 출력단자(OT1)(OT2)는 다이오드(D1)(D2) 및 콘덴서(C3)(C4)로 정 및 부전압 정류기(3)(4)의 입력단자에 접속되어 정류기(3)(4)의 출력단자에 저항(R2) 및 가변저항(VR1), 저항(R3)이 직렬로 접속되며, 가변저항(VR1)의 가변단자는 브라운관(5)의 제4전극에 접속되었다.Conventional focus voltage supply circuit the output terminal of the horizontal deflection integrated device (1) for which the horizontal synchronizing signal (HS) input, as illustrated in FIG. 1 self-connected to the base of the transistor (TR 1), a transistor (TR 1 ) Is connected to the horizontal deflection coil (HDL), the capacitor (C 2 ) and the vertical size control coil (L 1 ) connected in series, and to the input terminal (I 1 ) of the flyback transformer (2). a flyback transformer (2) the output terminal (OT 1) (OT 2), the diode (D 1) (D 2) and a condenser (C 3) (C 4) with positive and negative voltage rectifier (3) (4) It is connected to the input terminal a variable terminal of the rectifier (3) and (4) resistance (R 2) and a variable resistor (VR 1), the resistance (R 3) are connected in series, the variable resistor (VR 1) to the output terminal of the It was connected to the 4th electrode of the CRT5.

제1도의 도면 설명중 미설명 부호 Vcc는 전원단자이고, C1은 콘덴서이며, R1은 저항이다.In the drawings of FIG. 1, reference numeral Vcc is a power supply terminal, C 1 is a capacitor, and R 1 is a resistor.

이와 같이 구성된 종래의 초점전압 공급회로는 수평편향용 집적소자(1)에 수평동기신호(HS)가 입력되면, 수평편향용 집적소자(1)는 발진되면서 구동펄스를 출력하여 트랜지스터(TR1)의 베이스에 인가하므로 트랜지스터(TR1)가 온 및 오프를 반복하면서 그의 콜렉터에 플라이백 펄스신호가 발생하고, 그 플라이백 펄스신호는 수평편향코일(HDL)에 인가되어 수평편향코일(HDL)이 브라운관(5)의 전자 빔의 수평편향을 제어하고, 코일(L1)의 조절에 따라 수평크기가 조절된다.In the conventional focus voltage supply circuit configured as described above, when the horizontal synchronization signal HS is input to the horizontal deflection integrated device 1, the horizontal deflection integrated device 1 oscillates and outputs a driving pulse to output the transistor TR 1 . Since the transistor TR 1 is repeatedly turned on and off, a flyback pulse signal is generated at the collector thereof, and the flyback pulse signal is applied to the horizontal deflection coil HDL so that the horizontal deflection coil HDL is applied. The horizontal deflection of the electron beam of the CRT 5 is controlled, and the horizontal size is adjusted according to the adjustment of the coil L 1 .

그리고, 트랜지스터(TR1)의 온 및 오프에 따라 전원단자(Vcc)의 전원이 플라이백 트랜스(2)에서 유도되어 출력단자(OT1)(OT2)로 출력되고, 그 출력된 전압은 정류기(3)(4)를 통해 플러스 및 마이너스 전압으로 각기 변환된 후 저항(R2)(R3)을 통하고, 가변저항(VR1)의 가변에 따라 평형되어 브라운관(5)의 제4전극에 초점전압으로 공급하게 된다.As the transistor TR 1 is turned on and off, the power supply of the power supply terminal Vcc is guided by the flyback transformer 2 and output to the output terminal OT 1 OT 2 , and the output voltage is rectified. (3) and (4) are converted into positive and negative voltages, respectively, and then through resistors R 2 and R 3 , equilibrated according to the variable resistance VR 1 , and thus the fourth electrode of the CRT 5. To the focal voltage.

그러나, 이와 같은 종래의 초점전압 공급회로는 초점전압을 일정하게 공급하므로 브라운관의 화면 중앙부의 초점은 정확히 맞게 되나 화면의 주변부의 초점이 나쁜 결함이 있었다.However, since the conventional focus voltage supply circuit supplies the focus voltage constantly, the center of the screen of the CRT is correctly focused, but the focus of the periphery of the screen is poor.

본 고안은 이와 같은 종래의 결함을 감안하여, 수평편향부의 수평편향 코일에서 발생되는 포물선 전압 및 수직평향부의 톱니파 전압에 따라 초점 전압을 가변시켜 화면의 주변부의 초점특성을 향상시키게 안출한 것으로, 이를 첨부된 제2도의 도면에 의하여 상세히 설명하면 다음과 같다.The present invention is designed to improve the focusing characteristics of the periphery of the screen by varying the focus voltage according to the parabolic voltage generated in the horizontal deflection coil and the sawtooth wave voltage generated in the horizontal deflection coil in consideration of such a conventional deficiency. When described in detail with reference to the accompanying drawings of FIG. 2 as follows.

제2도는 본 고안의 초점전압 공급 회로도로서, 이에 도시한 바와 같이 수평동기신호(HS)에 따라 수평 편향을 제어하는 수평편향용 집적소자(IC11), 저항(R11-R14), 콘덴서(C11-C13), 트랜지스터(TR11, TR12), 수평편향코일(HDL11) 및 코일(L11)로 된 수평편향부(11)와, 상기 트랜지스터(TR12)가 온 및 오프됨에 따라 플라이백트랜스(12)에서 출력되는 전압으로 브라운관(14)의 제4전극에 초점전압을 공급하는 다이오드(D11,D12), 콘덴서(C14, C15), 저항(R15, R16) 및 가변저항(VR11)으로 된 초점전압 공급부(13)와, 수직동기신호(VS)에 따라 수직편향을 제어하는 수직편향용 집절소자(IC12), 저항(R18, R19), 다이오드(D13), 콘덴서(C16-C18), 가변저항(VR12) 및 수직편향코일(VDL11)로 된 수직편향부(15)로 된 모니터에 있어서, 상기 수평편향코일(HDL11)의 포물선 전압을 전류 증폭하는 저항(R20-R25), 콘덴서 (C19, C20) 및 트랜지스터(TR13, TR14)로 된 다링톤 증폭부(16)와, 상기 다링톤 증폭부(16)의 출력전압을 상기 브라운관(14)의 제4전극에 인가하는 트랜스(TS12)와, 상기 수직편향부(15)의 톱니파 전압을 출력하는 저항(R26-R31), 콘덴서(C21) 및 트랜지스터(TR15, TR16)로 된 출력부(17)와, 상기 출력부(17)의 출력전압을 전류 증폭하여 상기 브라운관(14)의 제4전극에 인가하는 콘덴서(C22, C23), 저항(R32-R36) 및 트랜지스터(TR17, TR18)로 된, 캐소코드 증폭부(18)로 구성한 것으로, 제2도의 도면 설명중 미설명 부호 Vcc1-Vcc4는 전원단자이다.2 is a focus voltage supply circuit diagram according to the present invention, and as shown therein, a horizontal deflection integrated device IC 11 , a resistor R 11- R 14 , and a capacitor for controlling horizontal deflection according to a horizontal synchronization signal HS. (C 11 -C 13), a transistor (TR 11, TR 12), and a horizontal deflection coil (HDL 11) and a horizontal deflection coil (11) in the (L 11), said transistor (TR 12) on and off As a result, the diodes D 11 and D 12 , the capacitors C 14 and C 15 , and the resistors R 15 , which supply the focus voltage to the fourth electrode of the CRT 14 with the voltage output from the flyback transformer 12. R 16 ) and a focus voltage supply 13 composed of a variable resistor VR 11 , a vertical deflection collector IC 12 , and a resistor R 18 , R 19 for controlling the vertical deflection according to the vertical synchronization signal VS. ), A monitor comprising a vertical deflection portion 15 comprising a diode (D 13 ), a capacitor (C 16 -C 18 ), a variable resistor (VR 12 ) and a vertical deflection coil (VDL 11 ), wherein the horizontal deflection coil ( HDL 11 ) Parabolic I Darlington amplifier 16 comprising a resistor (R 20 -R 25 ), a capacitor (C 19 , C 20 ), and transistors (TR 13 , TR 14 ) for current amplifying voltage, and the Darlington amplifier (16) The transformer (TS 12 ) for applying the output voltage of the CRT to the fourth electrode of the CRT (14), and the resistors (R 26- R 31 ) and the capacitor (C 21 ) for outputting the sawtooth wave voltage of the vertical deflection section (15). And condensers C 22 and C 23 for current amplifying the output 17 of the transistors TR 15 and TR 16 and the output voltage of the output 17 and applying it to the fourth electrode of the CRT 14. ), Resistors (R 32- R 36 ) and transistors (TR 17 , TR 18 ), each of which consists of a cathode code amplification unit 18, wherein the reference numerals Vcc 1- Vcc 4 in FIG. to be.

이와 같이 구성된 본 고안은 전원단자(Vcc1-Vcc4)에 전원이 인가되고, 수평동기신호(HS)가 입력되면, 그 수평동기신호(HS)에 따라 수평편향용 집적소자(IC11)가 구동펄스신호를 출력하여 트랜지스터(TR11)의 베이스에 인가되므로 트랜지스터(TR11)가 온 및 오프를 반복하게 되고, 트랜지스터(TR11)가 온 및 오프를 반복함에 따라 전원단자(Vcc3)의 전원이 저항(R13)을 통한 후 트랜스(TS11)의 일차코일에서 이차코일로 유도되어 트랜지스터(TR12)의 베이스에 인가되므로 트랜지스터(TR12)가 온 및 오프를 반복하여 그의 콜렉터에 플라이백 펄스신호가 발생하고, 그 플라이 백 펄스신호에 따라 수평편향코일(HDL11)가 수평편향을 제어함과 아울러 플라이 백 트랜스(12)가 일정전압을 출력하며, 그 출력한 전압은 초점전압 공급부(13)에서 정류되고 평형되어 브라운관(14)의 제4전극에 초점전압으로 공급된다.According to the present invention configured as described above, when power is applied to the power terminals Vcc 1 to Vcc 4 , and the horizontal synchronization signal HS is input, the horizontal deflection integrated device IC 11 is applied according to the horizontal synchronization signal HS. Since the driving pulse signal is output and applied to the base of the transistor TR 11 , the transistor TR 11 is repeatedly turned on and off, and as the transistor TR 11 is repeatedly turned on and off, the power supply terminal Vcc 3 is turned on. after the power is via a resistor (R 13) is induced in the primary coil of the transformer (TS 11) to the secondary coil by repeating the applying, so the transistor (TR 12) is on and off the base of the transistor (TR 12) plies in his collector The back pulse signal is generated, the horizontal deflection coil HDL 11 controls the horizontal deflection according to the fly back pulse signal, and the fly back transformer 12 outputs a constant voltage, and the output voltage is the focus voltage supply unit. Commutated and equilibrated in (13) Focus voltage is supplied to the fourth electrode of the ungwan 14.

그리고, 수직동기신호(VS)가 수직편향용집적소자(IC12)에 입력되면, 수직편향용집적소자(IC12)는 저항(R19) 및 콘덴서(C17)로 발진되면서 톱니파 전압을 출력하고, 그 출력한 톱니파 전압은 콘덴서(C18)를 통해 수직편향 코일(VDL11)에 인가되어 수직편향을 제어하게 된다.And, when a vertical synchronization signal (VS) inputted to the vertical deflection integrated device (IC 12) for an integrated device (IC 12) for the vertical deflection while being oscillated to a resistance (R 19) and capacitor (C 17) outputs a saw-tooth voltage The output sawtooth wave voltage is applied to the vertical deflection coil VDL 11 through the capacitor C 18 to control the vertical deflection.

이와 같이 동작함에 있어서, 수평편향코일(HDL11)의 포물선 전압이 다링톤 증폭부(16)의 콘덴서(C19)를 통하고, 다링톤 접속된 트랜지스터(TR13, TR14)를 통해 전류증폭된 후 콘덴서(C20) 및 저항(R25)을 통하고, 트랜스(TS12,)를 통해 브라운관(14)의 제4전극에 인가 즉, 수평편향코일(HDL11)의 수평편향에 따라 브라운관(14)의 제4전극에 인가하는 초점 전압을 가변시키게 된다.In this operation, the parabolic voltage of the horizontal deflection coil HDL 11 is amplified through the capacitor C 19 of the Darlington amplifier 16 and through the Darlington connected transistors TR 13 and TR 14 . And then through the capacitor (C 20 ) and the resistor (R 25 ) and applied to the fourth electrode of the CRT (14) through the transformer (TS 12 ,), that is, the CRT according to the horizontal deflection of the horizontal deflection coil (HDL 11 ). The focus voltage applied to the fourth electrode of (14) is varied.

그리고, 수평편향코일(HRL11)의 톱니파전압이 출력부(17)의 캐스코드접속된 트랜지스터(TR12, TR16)를 통해 출력되고, 그 출력된 톱니파전압은 캐스코드증폭부(18)의 콘덴서(C22) 및 저항(R32)을 통하고, 캐스코드접속된 트랜지스터(TR17, TR18)를 통해 전류 증폭된 후 브라운관(14)의 제4전극에 인가, 즉 수평편향코일(HDL11)의 수직편향에 따라 브라운관(14)의 제4전극에 인가하는 초점전압을 가변시킨다.The sawtooth wave voltage of the horizontal deflection coil HRL 11 is output through the cascoded transistors TR 12 and TR 16 of the output unit 17, and the output sawtooth wave voltage of the cascode amplifier unit 18 is output. The current is amplified through the capacitor C 22 and the resistor R 32 and cascode-connected transistors TR 17 and TR 18 and then applied to the fourth electrode of the CRT 14, that is, the horizontal deflection coil HDL. The focus voltage applied to the fourth electrode of the CRT 14 is varied according to the vertical deflection of 11 ).

이상에서 상세히 설명한 바와 같이 본 고안은 초점전압을 일정하게 고정하지 않고, 수직 및 수평편향에 따라 가변시키면서 브라운관에 공급하므로 브라운관의 중앙부는 물론 주변부의 초점이 정확히 맞게 되는 효과가 있다.As described in detail above, the present invention does not constantly fix the focus voltage, and supplies the CRT while varying the vertical and horizontal deflections, so that the center portion of the CRT as well as the periphery of the periphery are accurately adjusted.

Claims (1)

수평 및 수직편향코일(HDL11) (VDL11)로 수평 및 수직편향을 제어하는 수평 및 수직편향부(11) (15)와, 플라이백 트랜스(12)의 출력전압으로 브라운관(14)에 초점전압을 공급하는 초점전압 공급부(13)로 된 모니터에 있어서, 상기 수평편향코일(HDL11) 포물선전압을 전류증폭하는 다링톤증폭부(16)와, 상기 다링톤증폭부(16)의 출력 전압으로 상기 브라운관(14)에 초점전압을 공급하는 트랜스(TS12)와, 상기 수직편향코일(VDL11)의 톱니파 전압을 출력하는 출력부(17)와, 상기 출력부(17)의 톱니파 전압을 전류 증폭하여 상기 브라운관(14)의 초점전압으로 공급하는 캐스코드 증폭부(18)로 구성함을 특징으로 하는 모니터의 초점전압 공급회로.Focuses on the CRT 14 with the horizontal and vertical deflection coils (HDL 11 ) (VDL 11 ) to control the horizontal and vertical deflections (15) and the output voltage of the flyback transformer (12). A monitor comprising a focal voltage supply unit 13 for supplying a voltage, comprising: a Darlington amplifier 16 for amplifying the horizontal deflection coil HDL 11 parabolic voltage and an output voltage of the Darlington amplifier 16; The output unit 17 for outputting the transformer TS 12 for supplying a focus voltage to the CRT 14, the sawtooth wave voltage of the vertical deflection coil VDL 11 , and the sawtooth wave voltage of the output unit 17. And a cascode amplifying part (18) for amplifying the current and supplying the current to the focus voltage of the CRT (14).
KR2019880004644U 1988-03-31 1988-03-31 Focus voltage supply circuit for monitor KR930003561Y1 (en)

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KR890020208U KR890020208U (en) 1989-10-05
KR930003561Y1 true KR930003561Y1 (en) 1993-06-19

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