KR940005072Y1 - High voltage stabilization device - Google Patents
High voltage stabilization device Download PDFInfo
- Publication number
- KR940005072Y1 KR940005072Y1 KR2019880021857U KR880021857U KR940005072Y1 KR 940005072 Y1 KR940005072 Y1 KR 940005072Y1 KR 2019880021857 U KR2019880021857 U KR 2019880021857U KR 880021857 U KR880021857 U KR 880021857U KR 940005072 Y1 KR940005072 Y1 KR 940005072Y1
- Authority
- KR
- South Korea
- Prior art keywords
- fbt
- voltage
- secondary coil
- output
- high voltage
- Prior art date
Links
Classifications
-
- 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
- H04N3/185—Maintaining dc voltage constant
Abstract
내용 없음.No content.
Description
제1도는 본 고안 장치의 회로도.1 is a circuit diagram of the device of the present invention.
제2도는 종래 모니터의 고압장치 회로도.2 is a circuit diagram of a high voltage device of a conventional monitor.
본 고안은 TV수상기나 모니터의 고압 안정화 장치에 관한 것으로서, 특히, FBT 1차코일의 중간단자는 정류부를 통해 FBT의 2차코일이 연결된 에미터 접지 트랜지스터의 콜렉터에 연결하고, FBT의 출력과 기준전압을 비교하는 비교기를 트랜지스터에 연결하여 항상 일정한 고압을 음극선관에 공급할 수 있도록한 모니터의 고압 안정화 장치에 관한 것이다.The present invention relates to a high pressure stabilization device of a TV receiver or a monitor, and in particular, the middle terminal of the FBT primary coil is connected to the collector of the emitter ground transistor to which the secondary coil of the FBT is connected through the rectifying unit, and the output and reference of the FBT. The present invention relates to a high voltage stabilization device for a monitor that connects a comparator comparing voltages to a transistor so that a constant high voltage can always be supplied to a cathode ray tube.
종래에는 제2도에 도시된 바와같이 일측에 전원(B+)이 연결된 FBT(32)의 1차코일을 수평편향부(31)의 입력에 연결하고, 일측이 접지된 FBT(32)의 2차코일은 다이오드(D1)를 통해 음극선관(33)에 연결하여서 된 것으로서, FBT(32)의 1차코일에 전원(B+)이 공급되면 수평편향부(31)가 동작됨과 동시에 2차코일에 고압이 유기되어 다이오드(D1)를 통해 음극선관(33)에 인가되는데, 고압 출력측에서 과전류가 흐를 경우에는 전압이 낮아지고, 이와 반대로 전류가 적게 흐를 경우에는 전압이 높아지게 됨에 따라 FBT(32)의 출력전압인 고압의 변동폭이 크게 되어 화면의 폭과 밝기가 심하게 변화되는 단점이 있다.Conventionally, as shown in FIG. 2, a primary coil of an FBT 32 having a power source B + connected to one side is connected to an input of a horizontal deflection unit 31, and a secondary of an FBT 32 having one side grounded. The coil is connected to the cathode ray tube 33 through the diode D1. When the power B + is supplied to the primary coil of the FBT 32, the horizontal deflection portion 31 is operated and at the same time the high pressure is applied to the secondary coil. This is induced and applied to the cathode ray tube 33 through the diode D1. When the overcurrent flows on the high voltage output side, the voltage decreases. On the contrary, when the current flows less, the voltage rises, so that the output of the FBT 32 increases. The fluctuation range of the high voltage, which is a voltage, becomes large, and the width and brightness of the screen are severely changed.
본 고안은 이와같은 종래의 단점을 해결하기 위하여 FBT의 1차코일 중간단자와 2차코일 일측이 콜렉터에 연결된 에미터 접지 트랜지스터의 베이스는 비교기는 출력에 연결하되, 비교기의 입력단자(+, -)는 각각 FBT의 출력과 기준전압을 연결하여 FBT의 출력을 항상 일정하게 유지 시키므로서 화면의 폭과 밝기의 변화를 일정하게 유지시킬 수 있도록한 모니터의 고압 안정화 장치를 제공하는 것을 목적으로 하며, 이하 첨부된 도면을 참조하여 본 고안의 구성 및 작용 효과를 상세히 설명한 다음과 같다.In order to solve this problem, the base of the emitter ground transistor in which the primary coil middle terminal of the FBT and the secondary coil side are connected to the collector is connected to the output of the comparator, but the input terminal of the comparator (+,- ) Is to provide a high-pressure stabilization device for the monitor that maintains constant the width and brightness of the screen by connecting the output of the FBT and the reference voltage to maintain the constant output of the FBT at all times. Hereinafter, with reference to the accompanying drawings, the configuration and operation effects of the present invention in detail as follows.
제1도에 의하면 본 고안 장치는 수평편향부(1)와 FBT(2) 및 음극선관(3)을 포함하는 모니터의 고압장치에 있어서, FBT(2)의 2차코일에 유기되어 음극선관(3)에 공급되는 전압레벨을 비교 검출하는 비교부(7)와, 상기 비교부(7)에 기준전압을 공급하는 정전압부(5)와, 상기 비교부(7)에 인가되는 FBT(2) 2차코일의 검출전압 레벨을 조정하는 가변저항(VR1)과, 상기 비교부(7)의 출력에 의하여 FBT(2) 2차코일을 온/오프시키는 스위칭부(8)와, FBT(2) 1차코일의 유기 전압을 정류하여 스위칭부(8) 전원으로 공급하는 정류부(6)를 포함하는 구성이다.According to FIG. 1, the device of the present invention is a high-pressure device of a monitor including a horizontal deflection portion 1, an FBT 2, and a cathode ray tube 3, which is induced in a secondary coil of an FBT 2 and is formed of a cathode ray tube ( A comparator 7 for comparing and detecting a voltage level supplied to 3), a constant voltage part 5 for supplying a reference voltage to the comparator 7, and an FBT 2 applied to the comparator 7; A variable resistor VR1 for adjusting the detected voltage level of the secondary coil, a switching unit 8 for turning on / off the secondary coil of the FBT 2 by the output of the comparison unit 7, and an FBT 2 It comprises a rectifier 6 for rectifying the induced voltage of the primary coil and supplying the switching unit 8 power.
이와같은 구성으로 된 본 고안 장치의 작용효과는 먼저, FBT(2)의 1차코일에 전원(B+)이 인가되면, 수평편향부(1)가 동작됨과 동시에 FBT(2) 1차코일의 중간단자에서 펄스전압이 발생되는데 이 교류전압은 정류부(6)를 통해 직류전압으로 정류되어 트랜지스터(Q1)의 콜렉터에 인가된다.The effect of the device of the present invention having such a configuration is that when the power source B + is applied to the primary coil of the FBT 2, the horizontal deflection unit 1 is operated and at the same time the middle of the primary coil of the FBT 2 is applied. A pulse voltage is generated at the terminal, which is rectified to a DC voltage through the rectifier 6 and applied to the collector of the transistor Q1.
또한, 비교기(4)의 입력단자(-)에는 기준전압(즉, 전압(B2 +)이 정전압부(5)에 의해 항상 일정한 전압이 인가됨)이 인가됨에 따라 비교기(4)에서는 가변저항(VR1)에 의해 적정레벨로 제어되어 입력단자(+)에 인가되는 FBT(2)의 출력전압과 기준전압을 비교하여 그 차를 출력하게 되는데 만약 음극선관(3)에 인가되는 FBT(2)의 출력전류가 감소하여 고압이 상승하게 되면 비교기(4)의 출력전압 역시 증가하게 되어 트랜지스터(Q1)가 온이 된다.In addition, as a reference voltage is applied to the input terminal (-) of the comparator 4 (that is, a constant voltage is always applied by the constant voltage unit 5 of the voltage B 2 + ), the comparator 4 has a variable resistor. It is controlled to the proper level by (VR1) and compares the output voltage of the FBT (2) applied to the input terminal (+) with the reference voltage and outputs the difference.If the FBT (2) is applied to the cathode ray tube (3) When the output current decreases and the high voltage rises, the output voltage of the comparator 4 also increases, thereby turning on the transistor Q1.
따라서, FBT(2)의 2차코일에 유기된 고압이 트랜지스터(Q1)에 의해 거의 접지단위로 됨에 따라 FBT(2)의 출력전압은 낮아지게 된다.Therefore, as the high voltage induced in the secondary coil of the FBT 2 is almost grounded by the transistor Q1, the output voltage of the FBT 2 is lowered.
이와 반대로 FBT(2)의 출력전압이 낮을 경우에는 비교기(4)의 입력단자(+)에 인가되는 전압이 비교기(4)의 입력단자(-)에 인가되는 기준전압보다 낮아지게 됨에 따라 비교기(4)의 출력전압이 낮아져 트랜지스터(Q1)가 오프되므로서 FBT(2)의 2차코일에 유기되는 전압은 높아지게 된다.On the contrary, when the output voltage of the FBT 2 is low, the voltage applied to the input terminal (+) of the comparator 4 becomes lower than the reference voltage applied to the input terminal (-) of the comparator 4. As the output voltage of 4) is lowered and the transistor Q1 is turned off, the voltage induced in the secondary coil of the FBT 2 becomes high.
이상에서 설명한 바와같이 본 고안 장치는 FBT(2)의 2차코일에 유기되는 출력전압(즉, 고압)을 비교기(4)를 통해 기준전압과 비교하여 일정전압이상 또는 이하가 될때에는 자동으로 FBT(2)의 출력전압 제어용 트랜지스터(Q1)를 온 또는 오프시켜 고압을 자동 제어하므로서 항상 일정한 고압을 음극선관에 인가시킬 수 있다.As described above, the device of the present invention automatically compares the output voltage (that is, high voltage) induced in the secondary coil of the FBT 2 with the reference voltage through the comparator 4, and automatically sets the FBT when the voltage becomes higher than or equal to a predetermined voltage. A constant high voltage can always be applied to the cathode ray tube by automatically controlling the high voltage by turning on or off the output voltage controlling transistor Q1 of (2).
즉, FBT의 출력전압을 항상 일정하게 유지시켜 주므로서 음극선관에 나타나는 화면의 크기나 밝기를 항상 일정 유지시킬수 있다.That is, the output voltage of the FBT is kept constant so that the size and brightness of the screen appearing on the cathode ray tube can be kept constant.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019880021857U KR940005072Y1 (en) | 1988-12-29 | 1988-12-29 | High voltage stabilization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019880021857U KR940005072Y1 (en) | 1988-12-29 | 1988-12-29 | High voltage stabilization device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR900013705U KR900013705U (en) | 1990-07-05 |
| KR940005072Y1 true KR940005072Y1 (en) | 1994-07-27 |
Family
ID=19282652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019880021857U KR940005072Y1 (en) | 1988-12-29 | 1988-12-29 | High voltage stabilization device |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR940005072Y1 (en) |
-
1988
- 1988-12-29 KR KR2019880021857U patent/KR940005072Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR900013705U (en) | 1990-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100247586B1 (en) | Express circuit transient phenomena of power supply | |
| US4343028A (en) | Television receiver high voltage generator protection circuit | |
| CA1213366A (en) | Television receiver power supply regulation responding to beam current changes | |
| KR940005072Y1 (en) | High voltage stabilization device | |
| US3427496A (en) | High voltage and width stabilization | |
| CA1177158A (en) | High voltage protection circuit for a television receiver | |
| KR0140989B1 (en) | Power supply protection circuit | |
| KR900009575Y1 (en) | High voltage control circuit | |
| KR940004033Y1 (en) | Cathode voltage stabilization device for crt | |
| US4885510A (en) | Beam current compensated vertical size control | |
| KR920007697Y1 (en) | High voltage stabilization circuit | |
| KR0137275B1 (en) | Vertical tracking circuit | |
| KR960004979Y1 (en) | High voltage stabilization circuit of crt | |
| KR910003653Y1 (en) | High voltage stabilization circuit | |
| KR910003956Y1 (en) | Picture screen size control circuit of two mode type display apparattus | |
| KR930006836B1 (en) | High voltage output stabilization circuit | |
| KR200239038Y1 (en) | High voltage rise prevention circuit | |
| KR200148098Y1 (en) | A circuit for controlling horizontal size in a monitor | |
| KR100364735B1 (en) | The control circuit of high voltage part by brightness of monitor in video display appliance | |
| KR100281382B1 (en) | Monitor high voltage generation circuit | |
| KR920000911Y1 (en) | High voltage stabilization circuit for tv | |
| KR200144714Y1 (en) | Horizontal amplitude automatic correction circuit of TV screen | |
| KR910003655Y1 (en) | High voltage stabilization circuit for tv and monitor | |
| KR930007238Y1 (en) | High voltage circuit for fbt | |
| KR200327956Y1 (en) | CRT display apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E701 | Decision to grant or registration of patent right | ||
| REGI | Registration of establishment | ||
| FPAY | Annual fee payment |
Payment date: 19981216 Year of fee payment: 6 |
|
| LAPS | Lapse due to unpaid annual fee |