KR890004260Y1 - Control voltage generation equipment of voltage control generator - Google Patents

Control voltage generation equipment of voltage control generator Download PDF

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Publication number
KR890004260Y1
KR890004260Y1 KR2019860005255U KR860005255U KR890004260Y1 KR 890004260 Y1 KR890004260 Y1 KR 890004260Y1 KR 2019860005255 U KR2019860005255 U KR 2019860005255U KR 860005255 U KR860005255 U KR 860005255U KR 890004260 Y1 KR890004260 Y1 KR 890004260Y1
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voltage
transistor
control
controlled oscillator
color
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KR2019860005255U
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Korean (ko)
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KR870017467U (en
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소명진
조해석
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주식회사 금성사
구자학
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L5/00—Automatic control of voltage, current, or power
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop

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  • Processing Of Color Television Signals (AREA)

Abstract

내용 없음.No content.

Description

전압제어발진기의 제어전압 발생장치Control voltage generator of voltage controlled oscillator

제1도는 종래의 전압제어발진부의 회로도.1 is a circuit diagram of a conventional voltage controlled oscillator.

제2도는 본 고안의 회로도.2 is a circuit diagram of the present invention.

제3도는 본 고안의 요부 상세회로도.3 is a detailed circuit diagram of the main part of the present invention.

제4a도,제4b도,제4c도는 본 고안 회로 각부의 신호파형도.4A, 4B, and 4C are signal waveform diagrams of respective circuit parts of the present invention.

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

1 : 위상검출부 2 : 전압제어발진기1: phase detector 2: voltage controlled oscillator

3 : 제어전압발생부 Q1~Q9: 트랜지스터3: Control voltage generator Q 1 ~ Q 9 : Transistor

R1~R9: 저항R 1 to R 9 : resistance

본 고안은 컬러텔레비젼수상기용 3.58MHZ 전압제어발진기(VCO)를 제안하는 자동위상제어 루프(APC)의 제어전압을 외부가변저항을 사용하지 않고 펄스신호의 유무에 따라 제어전압이 계단적으로 변화하거나 일정한 값을 유지토록하는 제어전압발생회로를 APC루프의 필터에 연결하여 APC루프의 무조정화를 할 수 있도록한 제어전압 발생장치 회로구성에 관한 것이다.The present invention proposes a 3.58MHZ voltage controlled oscillator (VCO) for a color television receiver, and the control voltage of the automatic phase control loop (APC) does not use an external variable resistor. The present invention relates to a control voltage generator circuit configuration in which a control voltage generator circuit for maintaining a value is connected to an APC loop filter to allow unregulated APC loops.

종래에는 제1도에 도시된 바와같이 집적회로 내부의 위상검출부(10)가 VCO(11)의 출력과 입력컬러버스트(Color Burst)의 위상을 비교하여 VOC(11)출력의 위상과 주파수를 컬러버스트와 맞춰주게 되어 있고, 위상검출부(10)의 출력(V1)의 오프셀 전압은 VOC(11) 의 프리런닝 주파수를 결정해 주게 되어 있으나 이는 VCO(11)의 프리런닝 주파수를 정확히 맞추기 위하여 집적회로 외부의 APC루프 필터(12)에 가변저항(R3)을 연결하여 사용해야되므로 집적회로 외부의 조정개소가 증가하게 되어 주변 회로 구성이 복잡해지게 되는 단점이 있었다.Conventionally, as shown in FIG. 1, the phase detector 10 inside the integrated circuit compares the phase of the output of the VCO 11 and the phase of the input color burst to color the phase and frequency of the output of the VOC 11. The off-cell voltage of the output V 1 of the phase detector 10 determines the free running frequency of the VOC 11, but in order to accurately match the free running frequency of the VCO 11. Since the variable resistor R 3 is used to be connected to the APC loop filter 12 outside the integrated circuit, an adjustment point outside the integrated circuit is increased, thereby complicating the peripheral circuit configuration.

본 고안은 이와같은 단점을 없이하도록 집적회로 외부의 조정을 위한 가변저항을 없애서 회로구성을 간략히 하고 조형경량화 할 수 있도록한 것으로서 이하 첨부된 도면을 참조하여 본 고안의 구성 및 작용효과를 상세히 설명하면 다음과 같다.The present invention is intended to simplify the circuit configuration and reduce the weight of the molding by eliminating the variable resistor for adjustment of the outside of the integrated circuit so as to avoid such drawbacks. As follows.

우선 제2도 및 제3도를 참조하여 본 고안의 구성을 설명하면, 위상검출부(1)와 전압제어 발진기(2=VCO)는 궤환루프가 형성되도록 연결하고, 제어용펄스(3)와 컬러컬러신호(4)가 입력되는 제어전압발생부(5)의 출력은 콘덴서(C2, C3)와 저항(R0)으로된 자동위상제어루프용필터(6)를 통해 전압제어발진기(2)의 입력에 연결하되, 제어전압발생부(5)는 각각의 에미터와 콜렉터가 공통접속된 트랜지스터(Q3,Q4)의 베이스에 각각 제어용펄스(3)와 컬러컬러신호(4)가 입력되도록하고, 트랜지스터(Q3,Q4)의 콜렉터는 트랜지스터(Q6) 온·오프용 트랜지스터(Q5)의 베이스에 연결하며 트랜지스터(Q4)에 입력되는 컬러킬러신호(4)의 제어를 받는 스위치(S1)는 정전류원(I1)을 통해 트랜지스터(QS,Q9)의 에미터에 공통접속하여 트랜지스터(Q5)의 베이스와 트랜지스터(Q5,Q6)의 콜렉터접속점에서 제어전압(V1)의 출력된도록 하여서된 것으로서, 도면중 미설명 부호 R1~R9은 저항, Q1, Q2, Q7은 트랜지스터 Bias는 바이어스전압이다.First, the configuration of the present invention will be described with reference to FIGS. 2 and 3, and the phase detection unit 1 and the voltage controlled oscillator 2 = VCO are connected to form a feedback loop, and the control pulse 3 and the color color. The output of the control voltage generation unit 5 to which the signal 4 is input is the voltage controlled oscillator 2 through an autophase control loop filter 6 composed of condensers C 2 and C 3 and a resistor R 0 . The control voltage generator 5 has a control pulse 3 and a color color signal 4 input to the bases of the transistors Q 3 and Q 4 to which the emitter and collector are commonly connected. The collector of the transistors Q 3 and Q 4 is connected to the base of the transistor Q 5 for turning on and off the transistor Q 6 and controlling the color killer signal 4 input to the transistor Q 4 . The receiving switch S 1 is commonly connected to the emitters of the transistors Q S and Q 9 via the constant current source I 1 , so that the base and the transistor of the transistor Q 5 are connected. The control voltage (V 1 ) is outputted at the collector connection point of (Q 5 , Q 6 ), where R 1 to R 9 are resistors, Q 1 , Q 2 , and Q 7 are transistors Bias. Bias voltage.

본 고안의 작용효과는 제2도에 도시된 바와같이 제어전압발생부(5)는 제4a도 가와같은 펄수폭 2H(H : 63.5μSec), 주기 8H인 제어용 펄스(3)와 제4b도와 같은 컬러킬러신호(4)를 입력받아서 컬러킬러신호(4)가 로우일때 컬러버스트가 없거나 약할때는 제4c도의 실선부와 같은 파형을 출력(V1)하여 APC루프필터(6)를 통해VCO(2)의 입력에 가해주므로서 VCO(2)의 프리런닝주파수를 조금씩 변화 시키면서 안정상태를 유지하게 하여 컬러가 다시 들어오기를 대기하게 된다. 따라서 VCO(2)의 프리런닝주파수 조정용 가변저항없이 프리런닝 주파수가 자동조정되는 것이다. 그러나 컬러킬러신호(4)가 하이일때(컬러버스트가 있을때)는 제어전압발생부(5)의 출력(V1)은 제4c도의 점선부와같이 일정한 값을 유지하여 APC(2)와 위상겸출부(1) 및 APC루프용 필터(6)가 갖는 통산의 작용을 수행토록하여 VCO(2)출력의 위상과 주파수가 컬러버스트와 같아지도록 동작하게 되는 것이다. 이를 좀더 상세히 설명하면 제3도에 도시된 바와같이 컬러킬러신호(4)가 하이인 경우 스위치(S1)는 오프되고 트랜지스터(Q4)가 온되며 트랜지스터(Q5)의 베이스가 걸리지 않게 되므로 트랜지스터(Q5)가 오프된다. 따라서 트랜지스터(Q6, Q7, Q8, Q9)는 모두 오프되므로 출력(V1)은 제4c도의 점선부와 같이 일정전압을 유지하게 되는 것이다. 그러나 컬러킬러신호(4)가 로우가되면 스위치(S4)가 온되고 또한 트랜지스터(Q4)가 오프되므로 트랜지스터(Q3)는 제4a도와같은 제오용 펄스(3)의 하이-로우에 따라 온·오프를 반복하게 된다. 따라서 트랜지스터(Q3)가 온·오프되면 트래니지스터(Q5)는 오프, 온을 반복하게 되어 트랜지스터(Q5)의 콜렉터전위, 즉 콘덴서(C2)의 양단의 제어전압출력(V1)은 트랜지스터(Q5)가 온인 기간동안 방전, 오프인 기간동안 방전중지를 반복하게 되어 제4c도의 실선부와 같은 계단 파형의 제어전압을 출력시키므로서 상기한 바와같은 제어 동작을 수행하게 되는 것이다.As shown in FIG. 2, the control voltage generator 5 has a pulse width of 2H (H: 63.5 µSec) as shown in FIG. 4A and a control pulse 3 having a period of 8H, as shown in FIG. and a waveform, such as receiving input of color killer signal 4 color killer signal 4 is low when halttaeneun the color burst or pharmaceutical 4c degree solid unit output (V 1) VCO (2 via the APC loop filter 6 By changing the free running frequency of the VCO (2) little by little, it keeps stable and waits for the color to come back. Therefore, the free running frequency is automatically adjusted without the variable resistor for adjusting the free running frequency of the VCO 2. However, when the color killer signal 4 is high (when there is color burst), the output V 1 of the control voltage generator 5 maintains a constant value as shown by the dotted line in FIG. It is to operate so that the phase and frequency of the output of the VCO 2 are equal to the color burst so as to perform the function of the sum of the output section 1 and the filter for the APC loop 6. More specifically, as shown in FIG. 3, when the color killer signal 4 is high, the switch S 1 is turned off, the transistor Q 4 is turned on, and the base of the transistor Q 5 is not caught. Transistor Q 5 is turned off. Therefore, since the transistors Q 6 , Q 7 , Q 8 , and Q 9 are all turned off, the output V 1 maintains a constant voltage as shown by the dotted line in FIG. 4C. However, when the color killer signal 4 goes low, the switch S 4 is turned on and the transistor Q 4 is turned off, so that the transistor Q 3 is driven according to the high-low of the zero pulse 3 as shown in FIG. On and off are repeated. Therefore, when the transistor Q 3 is turned on and off, the transistor Q 5 is repeatedly turned off and on, so that the collector potential of the transistor Q 5 , that is, the control voltage output V 1 at both ends of the capacitor C 2 . ) is that it would take a control action as the transistor (Q 5) are repeated to discharge, to stop the discharge during the off during a period while turned on period of the stand because the output the control voltage of the staircase waveform and the 4c degree solid portion .

이와같이 본 고안에 의하면 컬러텔레비젼수상기용 3.58MHZ VCO를 포함하는 APC루프내의 가변저항이 삭제되므로 조정개소의 감소로 인한 작업시간의 단축과 회로구성의 간략화를 기할 수 있게 된 것이다.Thus, according to the present invention, since the variable resistor in the APC loop including the 3.58MHZ VCO for the color television receiver is eliminated, it is possible to shorten the working time and simplify the circuit configuration due to the reduction of the adjustment point.

Claims (1)

전압제어발진기와 위상 검출부를 궤환루프가 형성되도록 연결한 것에 있어서, 위상검출부(1)와 전압제어발진기(2)는 궤환루프가 형성되도록 연결하고, 제어용펄스(3)와 컬러킬러신호(4)가 입력되는 제어전압 발생부(5)의 출력은 콘덴서(C2, C3)와 저항(R0)으로된 자동위상제어루프용 필터(6)를 통해 전압제어발진기(2)의 입력에 연결하되, 제어전압발생부(5)는 각각의 에미터와 콜렉터가 공통접속된 트랜지스터(Q3, Q4)의 베이스에 각각 제어용펄스(3)와 컬러킬러신호(4)가 입력되도록하고, 트랜지스터(Q3, Q4)의 콜렉터는 트랜지스터(Q6)온·오프용 트랜지스터(Q5)의 베이스에 연결하며, 트랜지스터(Q4)에 입력되는 컬러킬러신호(4)의 제어를 받는 스위치(S1)는 정전류원(I1)을 통해 트랜지스터(Q8, Q9)의 에미터에 공통접속하여 트랜지스터(Q8)의 베이스와 트랜지스터(Q5, Q6)의 콜렉터접속점에서 제어전압(V1)이 출력되도록 하여서 된 전압제어발진기의 제어전압 발생장치.In connecting the voltage controlled oscillator and the phase detector to form a feedback loop, the phase detector 1 and the voltage controlled oscillator 2 are connected to form a feedback loop, and the control pulse 3 and the color killer signal 4 are formed. Is connected to the input of the voltage controlled oscillator 2 through an autophase control loop filter 6 composed of condensers C 2 and C 3 and a resistor R 0 . However, the control voltage generation unit 5 allows the control pulse 3 and the color killer signal 4 to be input to the bases of the transistors Q 3 and Q 4 to which the emitter and the collector are commonly connected. The collectors of (Q 3 , Q 4 ) are connected to the base of the transistor Q 5 for the transistor Q 6 on and off, and are controlled by the color killer signal 4 input to the transistor Q 4 ( S 1) is a constant current source (I 1) the transistor (Q 8, Q 9) connected in common to the transistor (Q 8) to the emitter of the bay via Su transistors (Q 5, Q 6) of the control voltage generator of the voltage-controlled oscillator is controlled hayeoseo voltage (V 1) is output from the connection point of the collector.
KR2019860005255U 1986-04-18 1986-04-18 Control voltage generation equipment of voltage control generator KR890004260Y1 (en)

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KR2019860005255U KR890004260Y1 (en) 1986-04-18 1986-04-18 Control voltage generation equipment of voltage control generator

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KR2019860005255U KR890004260Y1 (en) 1986-04-18 1986-04-18 Control voltage generation equipment of voltage control generator

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KR890004260Y1 true KR890004260Y1 (en) 1989-06-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190086135A (en) 2018-01-12 2019-07-22 박보경 A walking character toy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190086135A (en) 2018-01-12 2019-07-22 박보경 A walking character toy

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KR870017467U (en) 1987-11-30

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