KR890006239Y1 - Band converting circuits of tuner - Google Patents

Band converting circuits of tuner

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Publication number
KR890006239Y1
KR890006239Y1 KR2019860014957U KR860014957U KR890006239Y1 KR 890006239 Y1 KR890006239 Y1 KR 890006239Y1 KR 2019860014957 U KR2019860014957 U KR 2019860014957U KR 860014957 U KR860014957 U KR 860014957U KR 890006239 Y1 KR890006239 Y1 KR 890006239Y1
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KR
South Korea
Prior art keywords
tuner
band
voltage
ring counter
output
Prior art date
Application number
KR2019860014957U
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Korean (ko)
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KR880007119U (en
Inventor
문상규
Original Assignee
주식회사금성사
구자학
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Priority to KR2019860014957U priority Critical patent/KR890006239Y1/en
Publication of KR880007119U publication Critical patent/KR880007119U/en
Application granted granted Critical
Publication of KR890006239Y1 publication Critical patent/KR890006239Y1/en

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
    • G05F1/565—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/569—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
    • G05F1/573—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

내용 없음.No content.

Description

튜너용 밴드 절환 장치Band changer for tuner

제1도는 본 고안 장치의 회로도.1 is a circuit diagram of the device of the present invention.

제2도는 본 고안 장치를 설명하기 위한 파형도.2 is a waveform diagram for explaining the device of the present invention.

제3도는 종래 밴드 절환 장치의 회로도.3 is a circuit diagram of a conventional band switching device.

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

1 : 발생기 2 : 링 카운터1: generator 2: ring counter

3 : 스위치 4 : 튜너3: switch 4: tuner

본 고안은 튜너용 밴드 절환 장치에 관한 것으로서, 특히 원격 제어용 튜너장치에 있어, 튜너밴드 각 단자에 필요 전압을 인가하여 밴드를 절환하기 위한 튜너용 밴드 절환 장치에 관할 것이다.The present invention relates to a band switching device for a tuner, and more particularly to a tuner band switching device for switching a band by applying a required voltage to each terminal of the tuner band in a tuner device for a remote control.

종래에는 제3도에 도시된 바와 같이 튜너(31)의 밴드를 절환하기 위하여 절환스위치(32)로 튜너(31)의 밴드단자(LB, HB, UB)에 전압을 인가해주도록 되어 있으나, 원격제어용 동조시스템(튜너)에서와 같이 메모리 기능을 갖는 집적소자를 갖는 방식에서는 적용할수 없는 단점이 있다.Conventionally, as shown in FIG. 3, in order to switch the band of the tuner 31, a voltage is applied to the band terminals LB, HB, and UB of the tuner 31 by the switching switch 32. There is a drawback that cannot be applied in the way of having an integrated device having a memory function as in a control tuning system (tuner).

따라서 본 고안의 메모리 기능을 내장한 집적소자를 갖는 동조방식에서 튜너밴드단에 전압을 가해주어 일정한 주파수 대역내에서 적당한 채널을 선택하게끔 할 수 있어 원격 제어용 튜너에 적용할 수 있는 튜너용 밴드 절환 장치를 장치하는 것을 목적으로 하며, 이하 첨부된 도면을 참조하면서 본 고안의 구성, 작용효과를 설명하면 다음과 같다.Therefore, the tuner band switching device can be applied to a remote control tuner by applying a voltage to the tuner band stage in a tuning method having an integrated device having a built-in memory function of the present invention to select a suitable channel within a predetermined frequency band. An object of the present invention is described below with reference to the accompanying drawings, the configuration of the present invention, the effect of operation as follows.

제1도는 참조하면, 본 고안의 구성은 비교증폭기(10) 및 저항(R1-R5)그리고 콘덴서(C1, C2)로 구성된 구형파 발생기(1)의 출력(B) 링카운터(2)의 트리거입력(TG)과 스위치(3)의 가동자에 연결하고, 스위치(3)의 고정자를 다이오드(D1-D3)를 각각 통하여 링카운터(2)의 출력(VL, VH, U)에 연결하되, 튜너(4)의 밴드단자(LB, HB, UB)에 콜렉터가 각각 연결된 트랜지스터(Q1-Q3)의 베이스에 저항(R6-R8)을 각각 통하여 연결하여 일단 튜너(4)의 밴드가 선택되면 링 카운트(2)가 계수를 못하도록 구형파를 다이오드(D1-D3)가 통과시키도록 하여된 것으로서, 이러한 본 고안 장치이 작용효과는 제2도는 참조하여 설명하면 제1도에서와 같이 A점 전압(VA)은 비교증폭기(10)의 출력전압(VO)이 귀한되어로 된다.Referring to FIG. 1, the structure of the present invention is the output B of the square wave generator 1 composed of the comparative amplifier 10, the resistors R 1 -R 5 , and the capacitors C 1 , C 2 . And the stator of the switch (3) through the diodes (D 1 -D 3 ) of the output of the ring counter (2) (V L , V H ), respectively. , U), but connected via the resistors R 6 -R 8 to the bases of the transistors Q 1 -Q 3 connected to the band terminals LB, HB, and UB of the tuner 4, respectively. Once the band of the tuner 4 is selected, the diode D 1 -D 3 is passed through the square wave so that the ring count 2 does not count. The effect of this device is described with reference to FIG. As shown in FIG. 1, the output voltage V O of the comparison amplifier 10 is precious as the point A voltage V A. It becomes

비교증폭기(10)의 특성에서 비교 증폭기의 입력단자(Vi)이 양이면(즉, Vi>0) 출력 (V0)은 +V0가 되어 하이 상태를 유지하며, 이러 출력 전압 (+V0)에 의해 콘덴서(C1)는 저항(R3)을 통해 충전된다.If the input terminal (V i ) of the comparison amplifier in the characteristic of the comparison amplifier 10 is positive (that is, V i > 0), the output (V 0 ) becomes + V 0 to remain high, and thus the output voltage (+ V 0 ) charges capacitor C 1 through resistor R 3 .

콘덴서(C1)에 충전된 전압이 A점 전압(VA)보다 높아 지면 비교증폭기(10)의 출력전압 (V0)은 -V)가 되어 로우 상태를 유지하게 되고 이때 A점 전압은가 된다.When the voltage charged in the capacitor (C 1 ) is higher than the point A voltage (V A ), the output voltage (V 0 ) of the comparative amplifier 10 is -V) to maintain a low state, where the point A voltage Becomes

한편 비교증폭기(10)의 출력전압(V0)이 -V0인 상태에서는 콘덴서(C1)충전되었던 전압이 저항(R3)를 통하여 방전이 되며, 바로 전의 A점 전압(-VA)보다 충전 전압이 적어지면 또 다시 비교증폭기(10)의 입력전압(Vi)은 양이되어 (즉, Vi>0 비교증폭기(10)의 출력전압(V0은 +(V0)가 되어 높은 상태가 된다.On the other hand, in the state where the output voltage (V 0 ) of the comparative amplifier 10 is -V 0 , the voltage charged by the capacitor (C 1 ) is discharged through the resistor (R 3 ), and the point A voltage (-V A ) immediately before When the charging voltage becomes lower, the input voltage V i of the comparative amplifier 10 becomes positive again (that is, the output voltage V 0 of the V i > 0 comparison amplifier 10 becomes + (V 0 )). It becomes a high state.

따라서, 비교증폭기(10)의 출력에 발생된 전압 형태는 제2도에서 도시된 바와 같은 구형파가 된다.Thus, the voltage form generated at the output of the comparative amplifier 10 becomes a square wave as shown in FIG.

링 카운터(2)의 트리거 입력(TG)에서 처음 한번만 높은 상태의 펄스가 인가되면 링 카운터(2)의 출력(VR, VH, U)이 계속 낮은 상태로 차례로 계수하게 되고 트리거 입력(TG)에 낮은 상태의 전압이 인가되면, 링 카운터(2)의 계수가 멈추게 된다.When a high pulse is applied only once from the trigger input TG of the ring counter 2, the outputs V R , V H , U of the ring counter 2 continue to count in a low state, and the trigger input TG Is applied to the low state, the counting of the ring counter 2 stops.

그러므로 제2도와 같은 구형파에서의 높은 상태 전압 부분이 트리거단의 트리거역활을 하여 링카운터(2)의 출력(VR, VH, U)이 계속 차례로 낮은 상태로 계수하고 있는 동안 밴드절환스위치(3)의 가동자가기가 고정자중 어느 한쪽에 연결되면 다이오드(D1-D2)는 계속 낮은 상태로 계수되고 있는 링 카운터(2)의 출력(VR, VH, U)에 각각 연결되어 있으므로, 스위치(3)에 의하여 선택된 다이오드(D1-D2)중 하나가 구형파 발전기(1)의 출력(B)에 연결되어 구형파발진기(1)의 출력(B)이 링카운터(2)의 출력으로 통과하게 되고 이에 따라 구형파 발진기(10)의 출력(B)은 낮은 상태로 되어 링 카운터(2)는 계수를 멈추게 되고, 스위치(3)에 의하여 선택된 다이오드가 연결된 링 카운터(2)의 출력은 계속적으로 낮은 상태로 고정된다.Therefore, while the high state voltage portion of the square wave as shown in FIG. 2 acts as a trigger of the trigger stage, while the outputs of the ring counter 2 (V R , V H , U) continue to count in the low state, the band switching switch ( When the mover of 3) is connected to either of the stators, diodes D 1 -D 2 are connected to the outputs V R , V H , U of the ring counter 2 which are still counting low. One of the diodes D 1 -D 2 selected by the switch 3 is connected to the output B of the square wave generator 1 so that the output B of the square wave oscillator 1 is the output of the ring counter 2. The output B of the square wave oscillator 10 becomes low so that the ring counter 2 stops counting, and the output of the ring counter 2 to which the diode selected by the switch 3 is connected is Constantly held low

이러한 상태에는 트랜지스터(Q1-Q2)중 어느 하나가 도통되어 튜너(4)의 밴드단(LB, HB, UB)중 어느하나에 전원(+B)이 공급되는 것이다. 따라서 튜너(4)의 밴드 절환이 이루어진다. 아상에서 설명한 바와 같이 본 고안의 장치에 의하면 원격제어용 튜너의 밴드단에 선택된 밴드절환 스위치에 의하여 정확한 필요전원을 OR게이트 형식으로 인가해 주어 원격제어용 튜너에 적용할 수 있는 것이다.In this state, any one of the transistors Q 1 -Q 2 is turned on so that the power supply + B is supplied to any one of the band stages LB, HB, and UB of the tuner 4. Therefore, band switching of the tuner 4 is performed. As described above, the device of the present invention can be applied to the remote control tuner by applying the correct power supply in the OR gate type by a band switching switch selected at the band end of the remote control tuner.

Claims (1)

비교증폭기(10) 및 저항(R1-R5) 그리고 콘덴서(C1, C2)로 구성된 구형파 발생기(1)의 출력(B)을 링 카운터(2)의 트리거입력(TG)과 스위치(3)의 가동자에 연결하고, 스위치(3)의 고정자를 다이오드(D1-D3)를 각각 통하여 링카운터(2)의 출력(VR, VH, U)에 연결하되, 튜너(4)의 밴드단자(LB, HB, UB)에 콜렉터가 각각 연결된 트랜지스터(Q1-Q3)의 베이스에 저항(R1-R8)을 각각 통하여 연결하여, 일단 튜너(4)의 밴드가 선택되면 링카운터(2)가 계수를 못하도록 구형파를 다이오드(D1-D3)가 통과시키도록 하여된 튜너용 밴드 전환장치.The output B of the square wave generator 1 composed of the comparative amplifier 10, the resistors R 1 to R 5 , and the capacitors C 1 and C 2 is connected to the trigger input TG and the switch of the ring counter 2. 3) and the stator of the switch 3 to the outputs V R , V H , U of the ring counter 2 via the diodes D 1- D 3 , respectively, while the tuner 4 The bands of the tuner 4 are selected once by connecting the resistors R 1 -R 8 to the bases of the transistors Q 1 -Q 3 connected to the band terminals LB, HB, and UB respectively. Tuner band switching device to pass a square wave through the diode (D 1 -D 3 ) so that the ring counter (2) does not count.
KR2019860014957U 1986-09-30 1986-09-30 Band converting circuits of tuner KR890006239Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019860014957U KR890006239Y1 (en) 1986-09-30 1986-09-30 Band converting circuits of tuner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019860014957U KR890006239Y1 (en) 1986-09-30 1986-09-30 Band converting circuits of tuner

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Publication Number Publication Date
KR880007119U KR880007119U (en) 1988-05-31
KR890006239Y1 true KR890006239Y1 (en) 1989-09-18

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Application Number Title Priority Date Filing Date
KR2019860014957U KR890006239Y1 (en) 1986-09-30 1986-09-30 Band converting circuits of tuner

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230071400A (en) * 2021-11-16 2023-05-23 박미영 Attachment device for mask

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230071400A (en) * 2021-11-16 2023-05-23 박미영 Attachment device for mask

Also Published As

Publication number Publication date
KR880007119U (en) 1988-05-31

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