KR910005424Y1 - Power supply circuit for tv - Google Patents

Power supply circuit for tv Download PDF

Info

Publication number
KR910005424Y1
KR910005424Y1 KR2019880009131U KR880009131U KR910005424Y1 KR 910005424 Y1 KR910005424 Y1 KR 910005424Y1 KR 2019880009131 U KR2019880009131 U KR 2019880009131U KR 880009131 U KR880009131 U KR 880009131U KR 910005424 Y1 KR910005424 Y1 KR 910005424Y1
Authority
KR
South Korea
Prior art keywords
voltage
circuit
power supply
television
output
Prior art date
Application number
KR2019880009131U
Other languages
Korean (ko)
Other versions
KR900001975U (en
Inventor
최석기
강병규
Original Assignee
삼성전자 주식회사
안시환
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자 주식회사, 안시환 filed Critical 삼성전자 주식회사
Priority to KR2019880009131U priority Critical patent/KR910005424Y1/en
Publication of KR900001975U publication Critical patent/KR900001975U/en
Application granted granted Critical
Publication of KR910005424Y1 publication Critical patent/KR910005424Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/63—Generation or supply of power specially adapted for television receivers
    • 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
    • H04N3/19—Arrangements or assemblies in supply circuits for the purpose of withstanding high voltages

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

내용 없음.No content.

Description

텔레비젼의 기동회로A starting circuit of a television

제 1 도는 본 고안의 실시예 회로도.1 is a circuit diagram of an embodiment of the present invention.

제 2 도는 종래의 회로도.2 is a conventional circuit diagram.

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

1 : 기동전압공급부 C1, C2: 콘덴서1: starting voltage supply part C 1 , C 2 : condenser

R1, R2: 저항 ZD1; 제너다이오드R 1 , R 2 : resistance ZD 1 ; Zener diode

D1, D2; 다이오드D 1 , D 2 ; diode

본 고안의 텔레비젼의 초기동작시 수평동기신호 발지회로에 초기기동전원을 공급하기 위한 텔레비젼의 기동회로에 관한 것이다.A start circuit of a television for supplying initial start power to a horizontal synchronous signal detecting circuit during an initial operation of a television of the present invention.

종래에는 제 2 도와 같이 AC전원이 인가되는 초기기동에 입력된 AC전원을 정류 및 평활한 직류전압이 플라이빅트랜스(FBT)의 1차코일의 일측에 인가되는 한편, 바이어스 저항(R11)(R12)를 통해 트랜지스터(Q11)의 콜렉터 및 베이스에 각각 인가되어 이 트랜지스터(Q11)를 도통시키게 되고, 이에따라 이 트랜지스터(Q11)의 에미터출력이 역전류 방지용 다이오드(D11)를 통해 수평동기신호 발진회로(HS)에 전원으로 인가되어 수평동기 신호발진회로(HS)에서 수평동기신호 발진회로(HS)에서 수평동기신호가 발진되어 플라이백 트랜스(FBT)의 1차코일의 타측에 인가됨으로써 이 플라백 트랜스(FBT)가 작동되어 2차코일에 전압이 유기되고, 이 유기된 전압을 정류 및 평활하여주동작회로에 인가함으로써 초기기동이 이루어지며, 초기기동이 이루어진 후에는 플라이백 트랜스(FBT)의 2차코일에서 유기되어 정류 및 평활된 직류전압이 역전류방지용 다이오드(D12)를 통해 전술한 바와 같이 다이오드(D11)를 통한 트랜지스터(Q11)의 에미터출력과 합성되어 수평동기신호 발진회로(HS)에 전원으로 계속 공급되도록 되어 있으나, 제너다이오드(ZD11)가 '오픈'될시에는 트랜지스터(Q11)에 과전압이 걸려 이 트랜지스터(Q11)가 파손되어 텔레비젼이 기동되지 않게 되는 문제점이 발생될수 있으며 또한, 초기기동후에는 트랜지스터(Q11)에 의한 전력소모가 계속되므로써 전력소모가 많아지는 문제점등이 있었다.Conventionally, as shown in the second diagram, the AC power input at the initial startup to which the AC power is applied is rectified and a smooth DC voltage is applied to one side of the primary coil of the fly-by transformer FBT, while the bias resistor R 11 ( R is applied to 12) respectively to the collector and base of the transistor (Q 11) through, and thereby conducting the transistor (Q 11), yiettara the transistor (the emitter output of the reverse current preventing diode (D 11) of Q 11) It is applied to the horizontal synchronous signal oscillation circuit (HS) as a power source, and the horizontal synchronous signal oscillation circuit (HS) generates a horizontal synchronous signal from the horizontal synchronous signal oscillator circuit (HS), and the other side of the primary coil of the flyback transformer (FBT). The flyback transformer (FBT) is operated to apply a voltage to the secondary coil to induce a voltage, and rectify and smooth the induced voltage to the main operation circuit to perform initial startup, and after the initial startup, Transformer secondary is organic in coil commutation and the emitter of the transistor (Q 11) through the diode (D 11), as a smoothed DC voltage is above through a reverse current preventing diode (D 12) as emitter output for the synthesis of (FBT) The power supply is continuously supplied to the horizontal synchronization signal oscillation circuit HS, but when the zener diode ZD 11 is 'opened', the transistor Q 11 is over-voltageed, causing the transistor Q 11 to be damaged. There may be a problem that the power is not started, and further, since the power consumption by the transistor Q 11 continues after the initial startup, the power consumption increases.

본 고안은 이와같은 문제점을 해결하기 위해 직류전압을 콘덴서에 인가시에는 초기 일정시간동안의 지수함수적으로 감소하는 전류가 콘덴서에 흐르게되는 콘덴서의 특성을 이용하여 텔레비젼의 초기기동시에는 수평동기신호 발진회로에 전원을 공급하도록 고안된 것으로서, 이하 본 고안의 구성및 작용효과를 첨부도면에 의해 상세히 설명하면 다음과 같다.In order to solve this problem, the present invention uses a characteristic of a capacitor in which an exponentially decreasing current flows for a certain period of time when a DC voltage is applied to a capacitor. As designed to supply power to the oscillation circuit, the configuration and operation effects of the present invention are described in detail by the accompanying drawings as follows.

교류전원이 정류 및 평활회로(RS)에 인가되어 직류전압(V1)으로 변환되고, 이 직류전압(V1)이 플라이백트랜스(FBT)으 1차코일의 일측(L1)에 인가됨과 동시에 기동전압공급부(1)에 인가되며, 이 기동전압공급부(1)의 출력이 수평동기신호, 발진회로(HS)의 전원단자(B1)에 인가되고, 이 수평동기신호 발진회로(HS)의 출력(O1)이 플라이백 트랜스(FBT)의 1차코일의 타측(L1)에 인가되며 이 플라이백트랜스(FBT)의 2차코일의(L2) 전압이 정류다이오드(D2) 및 평활콘덴서(C2)를 매개하여 주구동회로(MD)에 인가됨과 동시에 역전류방지용 다이오드(D1)를 통해 수평동기신호 발진회로(HS)의 전원단자(B1)에 인가되게 구성한다.AC power is applied to rectification and smoothing circuit (RS) and converted to DC voltage (V 1 ), and this DC voltage (V 1 ) is applied to one side (L 1 ) of primary coil to flyback transformer (FBT). At the same time, it is applied to the starting voltage supply unit 1, and the output of the starting voltage supply unit 1 is applied to the power supply terminal B 1 of the horizontal synchronizing signal and the oscillating circuit HS, and this horizontal synchronizing signal oscillating circuit HS The output of (O 1 ) is applied to the other side (L 1 ) of the primary coil of the flyback transformer (FBT) and the voltage (L 2 ) of the secondary coil of the flyback transformer (FBT) is rectified diode (D 2 ). And to the main drive circuit MD via the smoothing capacitor C 2 and to the power supply terminal B 1 of the horizontal synchronous signal oscillation circuit HS through the reverse current prevention diode D 1 . .

상기 구성에서, 기동전압공급부(1)는 정류 및 평활회로(RS)의 출력이 입력되어 콘덴서(C1)를 매개하여 전압강하용 저항(R1)(R2)에 인가되고, 전압강하용 저항(R1)(R2)에 의해 강하된 전압이 제너다이오드(ZD1)를 역방향으로 통해 수평동기신호 발진회로(HS)의 전원단자(B1)에 인가되게 구성된다.In the above configuration, the starting voltage supply unit 1 receives the output of the rectification and smoothing circuit RS, is applied to the voltage drop resistor R 1 (R 2 ) via the capacitor C 1 , and for voltage drop. The voltage dropped by the resistors R 1 and R 2 is configured to be applied to the power supply terminal B 1 of the horizontal synchronous signal oscillation circuit HS via the zener diode ZD 1 in the reverse direction.

이와 같이 구성되는 본 고안에 있어서, 텔레비젼의 초기동시에 교류전원이 입력되어 정류 및 평활회로(RS)에 인가되고, 이 정류 및 평활회로 (RS)에서 교류전압을 정류 및 평활하여 직류전압(V1)으로 만들어 플라이백 트랜스(FBT)으 1차코일의 일측(L1)에 인가함과 동시에 기동전압공급부(1)내의 콘덴서(C1)에 인가하면, 이 콘덴서(C1)에는 지수함수적으로 감소되는 도통전류가 일정시간(t0)동안 흐르게 되고, 이 도통전류에 의해 저항(R1)(R2) 양단에 전압강하가 발생되는데, 이때 저항(R2) 양단에 발생된 전압이 제너다이오드(ZD1)의 역방향 도통전압보다 크게됨에 따라 '하이'레벨의 전압이 일정시간(t0)동안 제너다이오드(ZD1)를 통해 통상의 수평동기신호 발진회로(HS)의 전원단자(B1)에 인가된다.In the present invention configured as described above, the AC power is input to the rectifier and smoothing circuit RS at the same time as the initial stage of the television, and the rectified and smoothed AC voltage is rectified and smoothed in the rectifying and smoothing circuit RS to supply the DC voltage V 1. When the flyback transformer (FBT) is applied to one side (L 1 ) of the primary coil and simultaneously applied to the capacitor (C 1 ) in the starting voltage supply unit ( 1 ), an exponential function is applied to the capacitor (C 1 ). a conduction current to decrease the flows for a predetermined time (t 0), there is a voltage drop occurs across the resistance (R 1) (R 2) by a conduction current, wherein the voltage generated across the resistance (R 2) a power supply terminal of the Zener diode (ZD 1) reverse conductive for larger as than the voltage the voltage at the "high" level, a certain amount of time (t 0) a zener diode conventional horizontal synchronizing through (ZD 1) signals the oscillator circuit (HS) of ( Is applied to B 1 ).

따라서, 이 수평동기신호 발진회로(HS)에서는 수평동기신호가 발진되어 플라이백 트랜스(FBT)의 1차코일의 타측(L1)에 인가됨에 따라 이 플라이백 트랜스(FBT)가 작동되어 2차코일(L2)에 전압이 유기되고, 이 유기된 전압이 정류다이오드(D2) 및 평활콘덴서(C2)에 의해 정류 및 평활되어 주구동회로(mD)에 인가됨으로써 초기기동 이루어지는 한편 다이오드(D2) 및 콘덴서(C2)에 의해 정류 및 평활된 직류전압이 역전류방지용 다이오드(D1)를 통해 통상의 수평동기신호 발진회로(HS)의 전원단자(B1)에 인가됨으로써 수평동기신호 발진회로(HS)가 계속 동작되어 텔레비젼이 정상동작상태가 되게 한다.Accordingly, in the horizontal synchronous signal oscillation circuit HS, the horizontal synchronous signal is oscillated and applied to the other side L 1 of the primary coil of the flyback transformer FBT, thereby operating the flyback transformer FBT. The voltage is induced in the coil L 2 , and the induced voltage is rectified and smoothed by the rectifying diode D 2 and the smoothing capacitor C 2 , and applied to the main drive circuit mD to be initially started, while the diode ( The DC voltage rectified and smoothed by the D 2 ) and the condenser C 2 is applied to the power supply terminal B 1 of the conventional horizontal synchronous signal oscillation circuit HS through the reverse current prevention diode D 1 . The signal oscillation circuit HS continues to operate to bring the television into normal operation.

이와같이 본 고안은 콘덴서의 특성을 이용한 간단한 회로구성으로 텔레비젼의 초기시동에만 교류전원을 정류 및 평활한 전원전아버이 수평동기신호 발진회로에 전원으로 인가되고, 초기기동후에는 수평동기신호 발진회로의 출력에 의한 플라이백 트랜스 2차코일의 유기전압이 수평동기신호 발지회로의 전원으로 인가되게 함으로써 제품의 원가가 절감되고 또한, 품질의 신뢰성이 향상되며 전원소비가 줄어들게 되는 등의 잇점을 가지는 유용한 고안이다.In this way, the present invention is a simple circuit configuration using the characteristics of the capacitor, the AC power is rectified and smooth power arbor is applied to the horizontal synchronous signal oscillator circuit only after the initial startup of the television, and the output of the horizontal synchronous signal oscillator circuit after the initial startup By applying the induced voltage of the flyback transformer secondary coil to the power supply of the horizontal synchronous signal detecting circuit, it is useful to reduce the cost of the product, improve the reliability of the quality, and reduce the power consumption. to be.

Claims (2)

통상의 정류 및 평활회로(RS)에서 출력되는 직류전압(V1)을 입력신호로 하여 초기기동시 일정시간(t0)동안 '하이'레벨전압을 출력하도록 된 기동전압공급부(1)의 출력을 통상의 수평동기신호 발진회로(HS)의 전원전압으로 공급하도록 구성됨을 특징으로 하는 텔레비젼의 구동회로.The output of the starting voltage supply unit 1 which outputs a 'high' level voltage for a predetermined time t 0 during initial startup by using the DC voltage V 1 output from the normal rectification and smoothing circuit RS as an input signal. A driving circuit for a television, characterized in that for supplying a power supply voltage of a conventional horizontal synchronization signal oscillation circuit (HS). 제 1 항에 있어서, 기동전압회로부(1)를 입려된 직류전압(V1)를 전압강하용 저항(R1)(R2)에 인가시키는 콘덴서(C1)와 이 전압강하용 저항(R1)(R2)에 의해 강하된 전압에 의해 역방향으로 도통되어 이 강하된 전압을 통상의 수평동기신호 발진회로(HS)의 전원단자(B1)에 인가시키는 제너다이오드(ZD1)로 구성함을 특징으로하는 텔레비젼의 기동회로.The capacitor C 1 and the voltage drop resistor R according to claim 1, wherein the DC voltage V 1 applied with the starting voltage circuit unit 1 is applied to the voltage drop resistors R 1 and R 2 . 1 ) Zener diode ZD 1 is conducted in the opposite direction by the voltage dropped by R 2 and applied to the power supply terminal B 1 of the normal horizontal synchronization signal oscillation circuit HS. A starter circuit of a television, characterized in that.
KR2019880009131U 1988-06-14 1988-06-14 Power supply circuit for tv KR910005424Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019880009131U KR910005424Y1 (en) 1988-06-14 1988-06-14 Power supply circuit for tv

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019880009131U KR910005424Y1 (en) 1988-06-14 1988-06-14 Power supply circuit for tv

Publications (2)

Publication Number Publication Date
KR900001975U KR900001975U (en) 1990-01-19
KR910005424Y1 true KR910005424Y1 (en) 1991-07-25

Family

ID=19276269

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019880009131U KR910005424Y1 (en) 1988-06-14 1988-06-14 Power supply circuit for tv

Country Status (1)

Country Link
KR (1) KR910005424Y1 (en)

Also Published As

Publication number Publication date
KR900001975U (en) 1990-01-19

Similar Documents

Publication Publication Date Title
KR100496482B1 (en) Power supply for standby mode operation
US20030117825A1 (en) Power chip set for a switching mode power supply having a device for providing a drive signal to a control unit upon startup
US4118739A (en) Switching regulator for television receiver for generating a stabilized D.C. supply voltage for operating the various TV circuits
KR910005424Y1 (en) Power supply circuit for tv
KR970011529B1 (en) Switching power supply
JP2002171750A (en) Power supply
KR100227741B1 (en) Electronic apparatus having a standby power
US5161022A (en) Dc-dc converter for video apparatus
JPH1028374A (en) Power supply
KR910005422Y1 (en) Power supply circuit for tv
JPH0919145A (en) Switching power supply
KR910004617Y1 (en) Tv power supply circuit
KR920017443A (en) TV receiver
KR920008529Y1 (en) Circuit for controlling horizontal oscillation in tv
JPH0777510B2 (en) Switching Regulator
KR940001702Y1 (en) Apparatus for electronic igniting of discharge lamp
KR910008723Y1 (en) Control circuit for stand by-electrical source
JPH08126307A (en) Power source circuit
KR910008722Y1 (en) Supply circuit of electrical source using shopper transformer
JP2514649B2 (en) Discharge lamp lighting device
KR910005429Y1 (en) Power supply circuit for tv
KR20000015102U (en) Standby power saving device
KR0120084Y1 (en) Power reduction circuit
JP2563347Y2 (en) TV power supply
KR920000770Y1 (en) Power supply circuit

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: 19970619

Year of fee payment: 7

LAPS Lapse due to unpaid annual fee