KR880000669Y1 - Speed control circuit of motor - Google Patents
Speed control circuit of motor Download PDFInfo
- Publication number
- KR880000669Y1 KR880000669Y1 KR2019850004477U KR850004477U KR880000669Y1 KR 880000669 Y1 KR880000669 Y1 KR 880000669Y1 KR 2019850004477 U KR2019850004477 U KR 2019850004477U KR 850004477 U KR850004477 U KR 850004477U KR 880000669 Y1 KR880000669 Y1 KR 880000669Y1
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- South Korea
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- motor
- amplifier
- variable resistor
- control circuit
- voltage
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2231/00—Applications
- H01H2231/046—Camera
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- Lens Barrels (AREA)
- Adjustable Resistors (AREA)
Abstract
내용 없음.No content.
Description
제1도는 비데오 카메라의 파인더 및 주움 조절용 볼륨 손잡이의 상태도.1 is a state diagram of the video camera finder and volume control knob for adjusting the zoom.
제2도는 본 고안의 회로도.2 is a circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
OP1-OP4: OP앰프 R1-R17: 저항OP 1 -OP 4 : OP Amp R 1 -R 17 : Resistance
VR : 가변저항 ZM : 주움모우터VR: Variable resistance ZM: Joom motor
본 고안은 비데오 카메라에서 사용되는 주움 모우터의 속도조절회로에 관한 것이다.The present invention relates to a speed control circuit of a joom motor used in a video camera.
주움 렌즈(Zoom Lens)는 설정 범위내에서 촛점거리를 연속적으로 변화시킬 수 있기 때문에 비데오 카메라내에서 물체를 촬영할 때에 수동 및 전동으로 렌즈가 앞뒤로 움직이도록 하고 있으며, 주움 렌즈가 일정한 속도로 전후 이동될 때에는 연속적으로 변하는 촛점을 맞출 수 없기 때문에 주움렌즈의 이동속도를 빠르게 또는 늦게 이동시킬 필요가 있는 것이다.Zoom Lens can change the focal length continuously within the setting range, so that the lens moves back and forth manually and electrically when shooting objects in the video camera, and the zoom lens can be moved back and forth at a constant speed. In this case, it is necessary to shift the moving speed of the zoom lens faster or slower because the focus cannot be continuously changed.
본 고안은 이와같은 점을 감안하여 주움 스위치에 의하여 저항치가 가변되는 가변저항을 구성시켜 주움 조절용 볼륨 손잡이의 회전량에 따라 비례적으로 주움모우터를 회전할 수 있는 주움 모우터의 속도 조절회로를 제공하여 움직이는 피사체의 촛점을 맞추기 쉽게 한 것으로, 주움 조절용 볼륨내에 저항치가 가변되는 가변저항을 내삽시킨 후 비교기의 일측 단자에 연결 구성하고 비교기의 타측 단자에는 분배 저항이 연결되게 구성하여 두 전압의 차이에 의하여 주움 모우터에 인가되는 전류를 제어하도록 구성시켜 된 것이다.In view of the above, the present invention constitutes a variable resistor whose resistance value is changed by the joist switch, so that the speed control circuit of the joist motor can rotate the joist motor in proportion to the amount of rotation of the volume control for the joist adjustment. It is easy to focus on a moving subject by interpolating a variable resistor whose resistance value is variable in the volume for adjusting the zoom, and connecting it to one terminal of the comparator and connecting the distribution resistor to the other terminal of the comparator. It is configured to control the current applied to the joule motor.
이를 첨부도면에 의하여 상세히 설명하면 다음과 같다.When described in detail by the accompanying drawings as follows.
제1도는 비데오 카메라의 파인더 및 주움 조절용 볼륨 손잡이의 상태도로서, 가변저항(VR)이 내정된 볼륨(2)의 중앙돌부(3)가 손잡이(5)에 형성된 삽입홈(4)에 강제 끼우기로 결합되어 있어 주움렌즈 조절시 손잡이(5)를 회전시키면 볼륨(2) 내의 가변저항(VR)의 저항치가 변하게 된다.1 is a state diagram of the video camera finder and the volume knob for adjusting the zoom, the center protrusion (3) of the volume (2) of the variable resistance (VR) is to be forced into the insertion groove (4) formed in the handle (5) When the knob 5 is rotated when the zoom lens is adjusted, the resistance of the variable resistor VR in the volume 2 is changed.
따라서 가변저항(VR)의 중간치가 설정되는 경우에는(주움모우터 정지시) 븐우파인더(1) 내의 망원표시(T) 및 광각표시(W)는 상단부 좌우측에 도시되고 볼륨(2)의 우측으로 회전되는 경우에는 가변저항(VR)의 저항치가 변하면서 븐우파인더(1) 내에 광각표시(W)가 우측 하단부에 나타나 현재 주움 모우터가 우측 방향으로 회전되고 있음을 나타내는 것으로 볼륨 손잡이(5)로써 원하는 주움 배율을 선택시킨 후 원위치로 환원시켜 가변저항(VR)의 중간값이 설정되게 하여 주움 모우터를 정지시키게 되는 것이다.Therefore, when the intermediate value of the variable resistor VR is set (when the jog motor is stopped), the telephoto display T and the wide-angle display W in the even-finder 1 are shown on the left and right sides of the upper end and to the right of the volume 2. In the case of rotation, the resistance value of the variable resistor VR changes, and the wide-angle display W appears in the bottom right corner of the right-side finder 1 to indicate that the current zoom motor is being rotated in the right direction. After selecting the desired magnification ratio, it is reduced to its original position so that the intermediate value of the variable resistor VR is set to stop the jog motor.
제2도는 본 고안의 회로도로서, 전원(Vcc)이 저항(R6)(RR7)(R9)으로 분배되어 OP앰프(OP2)의 단자(-)에 인가되게 구성되고, 저항(R10)(R11)(R12)으로 분배된 전원은 OP앰프(OP3)의 단자(-)에 인가되게 구성한 후 OP앰프(OP2)(OP3)의 타측단자(+)에는 저항(R8)(R18)(R19)과 가변저항(VR)으로 분배된 전압(V1)(V2)이 공급되도록 구성하고 정상 상태시에는 전압(V1)(V2)보다 OP앰프(OP2)(OP3)의 단자(-)에 인가되는 기준전압이 높게 인가되도록 구성되어 있어 OP앰프(OP2)(OP3)에서 저전위 상태 신호를 출력하도록 구성되어 있다.Claim a circuit diagram of the subject innovation turns 2, the power supply (Vcc) is a resistance (R 6) (RR 7) (R 9) with the distribution terminal of the OP amplifier (OP 2) (-) are configured to be applied to the resistor (R 10) (R 11) (R 12) distributes power source terminal (the OP amplifier (OP 3) - then configured to be applied to), the other terminal (+) of the OP amplifier (OP 2) (OP 3) resistance ( R 8 ) (R 18 ) (R 19 ) and the divided resistor (VR) are configured to supply the voltage (V 1 ) (V 2 ), and in the normal state, OP amplifier than voltage (V 1 ) (V 2 ) The reference voltage applied to the terminal (OP) of (OP 2 ) (OP 3 ) is applied to a high level and is configured to output a low potential state signal from the OP amplifier (OP 2 ) (OP 3 ).
그리고 OP앰프(OP1)(OP4)의 일측단자(+)에는 OP앰프(OP2)(OP3)의 출력이 인가되고 타측단자(-)에는 저항(R2)(R3)(R4) 및 저항(R14)(R15)(R16)으로 분배된 기준 전압이 인가되게 구성되어 OP앰프(OP1)(OP4)의 출력으로 주움모우터(ZM)의 회전속도를 가변시킬 수 있도록 구성시켜 된 것이다.The output of the OP amplifier OP 2 (OP 3 ) is applied to one terminal (+) of the OP amplifier OP 1 (OP 4 ), and the resistor R 2 (R 3 ) (R is applied to the other terminal (-). 4 ) and the reference voltage divided by the resistors R 14 (R 15 ) and R 16 are applied to change the rotational speed of the jog motor ZM with the output of the OP amplifiers OP 1 and OP 4 . It is designed to be done.
이와같이 구성된 본 고안에서 제1도의 볼륨손잡이(5)를 우측(W)으로 회전시키게 되면 제2도의 가변저항(VR)의 저항치가 변하면서 저항(R8)(R18) 및 가변저항(VR)으로 분배되는 전압(V2)이 정상 상태보다 높아지므로 OP앰프(OP3)의 단자(+)에는 저항(R10)(R11)(R12)으로 분배된 기준 전압보다 큰 전압이 인가되어 고전위 상태 신호가 출력되며, 이 전압이 OP앰프(OP4)를 통하여 주움모우터(ZM)에 인가되고, 이때에 가변저항(VR)에 의하여 분배되는 전압(V1)은 상대적으로 감소되어 OP앰프(OP2)(OP1)를 통하여L레벨의 상태신호를 출력시키게 되어 주움모우터(ZM)의 양단간의 전압치에 의하여 주움모우터(ZM)가 정회전을 하게 되는 것으로, 볼륨손잡이(5)를 계속 우측으로 돌리면 가변저항(VR)의 저항치가 급변되어 주움모우터(ZM)의 양단 전압차가 커 더욱 빠른 속도로 회전하게 된다.When the volume knob 5 of FIG. 1 rotates to the right (W) in the present invention configured as described above, the resistance of the variable resistor VR of FIG. 2 is changed while the resistors R 8 (R 18 ) and the variable resistor VR are changed. Since the voltage divided by the voltage V 2 becomes higher than the normal state, a voltage greater than the reference voltage divided by the resistors R 10 (R 11 ) (R 12 ) is applied to the terminal (+) of the OP amplifier OP 3 . A high potential state signal is output, and this voltage is applied to the jog motor ZM through the OP amplifier OP 4 , at which time the voltage V 1 distributed by the variable resistor VR is relatively decreased. Via OP amplifier (OP 2 ) (OP 1 ) L level The output signal is output so that the jog motor ZM rotates forward by the voltage value between both ends of the jog motor ZM. If the volume knob 5 is continuously turned to the right, the variable resistor VR The resistance changes rapidly, and the voltage difference between both ends of the jog motor ZM is large, thereby rotating at a higher speed.
그리고 이와 반대로 볼륨손잡이(5)를 좌측으로 회전시키게 되면 가변저항(VR)의 저항치가 변화되어 저항(R8)(R19), 가변저항(VR)으로 분배된 전압(V1)이 기준전압보다 높게 인가되어 OP앰프(OP2)로 고전위 상태 신호가 출력되어 OP앰프(OP1)를 통하여 주움모우터(ZM)에 인가되고, OP앰프(OP3)(OP4)는 상대적으로L레벨상태신호로 출력되어 양단간의 전압차에 의하여 주움모우터(ZM)는 역회전을 하게 되는 것으로, 주움모우터(ZM)를 원하는 속도로 가변시켜 원하는 배율을 선택한 후에는 볼륨조정용 손잡이(5)를 역회전시켜 가변저항(VR)의 중심 위치에 고정되게 하면(제1도의 븐우 파인더로 확인), OP앰프(OP2)(OP1) 및 OP앰프(OP3)(OP4)의 출력은 등전위 상태가 되어 주움모우터(ZM)가 정지하게 되는 것이다.On the contrary, when the volume knob 5 is rotated to the left side, the resistance value of the variable resistor VR is changed so that the voltage V 1 distributed to the resistors R 8 (R 19 ) and the variable resistor VR is a reference voltage. It is applied higher and outputs the high potential status signal to the OP amplifier OP 2 and is applied to the jog motor ZM through the OP amplifier OP 1 , and the OP amplifier OP 3 and OP 4 are relatively L level After outputting the status signal, the jog motor ZM rotates in reverse due to the voltage difference between both ends. After the jog motor ZM is changed to a desired speed and the desired magnification is selected, the knob 5 for volume adjustment is moved. When it is rotated in reverse and fixed at the center position of the variable resistor VR (confirmed by the finder finder in FIG. 1 ), the outputs of the OP amplifier OP 2 (OP 1 ) and OP amplifier OP 3 (OP 4 ) are equipotential. The jog motor ZM stops.
따라서 본 고안에서는 가변저항(VR)의 중간 위치 범위에 다소 여유가 있어야만(오프셋트 범위) 조그마한 전위치에 의하여 주움모우터(ZM)가 고동되는 오동작을 방지하기 위하여 기준 전압을 설정하는 저항(R6)(R7)(R9) 및 저항(R10)(R11)(R12)으로 OP앰프(OP2)(OP3)의 오프셋트 범위가 크게되게 하고 있으며, 각각의 OP앰프(OP2)(OP3)의 후단에 또한 비교기로 구동되는 OP앰프(OP1)(OP2)를 대칭적으로 연결시켜 저항(R2)(R3)(R4) 및 저항(R14)(R15)(R16)으로 분배되는 기준 전압과 재차 비교되게 함으로써 주움모우터(ZM) 동작을 오동작을 방지할 수가 있으며, 가변저항(VR)의 조절에 따른 전위차에 의하여 원하는 속도로 주움 모우터를 구동시킬 수가 있는 것이다.Therefore, in the present design, the middle position range of the variable resistor VR should be somewhat marginal (offset range). The resistance R which sets the reference voltage to prevent the malfunction of the jog motor ZM by the small all positions is prevented. 6 ) (R 7 ) (R 9 ) and resistors R 10 (R 11 ) (R 12 ) increase the offset range of OP amplifiers OP 2 and OP 3 . OP 2) (OP amplifier is also powered by the comparator to the rear end of the OP 3) (OP 1) (connects OP 2) symmetrically resistance (R 2) (R 3) (R 4) and a resistor (R 14) By comparing the reference voltage distributed to (R 15 ) and (R 16 ) again, the operation of the jog motor (ZM) can be prevented from malfunctioning, and the pick-up at a desired speed due to the potential difference according to the adjustment of the variable resistor (VR) Can drive the rotor.
이상에서와 같이 본 고안은 볼륨조정용 손잡이(5)를 회전시켜 가변 저항의 저항치가 변하게 하여 각각의 OP앰프의 출력 전압의 차에 의하여 주움 모우터의 속도를 제어할 수가 있는 것으로, 볼륨조정용 손잡이(5)의 회전량에 따라 주움 모우터에 인가되는 전위차를 크게 할 수 있어 움직이는 피사체를 원하는 속도로 촛점을 맞출 수가 있으며, 비교기로 구동되는 OP앰프의 오프셋트 범위를 크게 함으로써 가변저항의 중간위치 부근에서 전위차가 생기는 것을 방지할 수 있는 주움 모위터의 속도조절 회로를 제공할 수가 있는 것이다.As described above, the present invention is to rotate the volume adjusting knob 5 so that the resistance value of the variable resistor is changed so that the speed of the pick-up motor can be controlled by the difference in the output voltage of each OP amplifier. 5) The potential difference applied to the joist motor can be increased according to the amount of rotation, so that the moving subject can be focused at a desired speed, and the offset range of the op amp driven by the comparator is increased to increase the vicinity of the intermediate position of the variable resistor. It is possible to provide a speed control circuit of a jooming motor that can prevent the potential difference from occurring.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850004477U KR880000669Y1 (en) | 1985-04-19 | 1985-04-19 | Speed control circuit of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019850004477U KR880000669Y1 (en) | 1985-04-19 | 1985-04-19 | Speed control circuit of motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR860013996U KR860013996U (en) | 1986-11-20 |
| KR880000669Y1 true KR880000669Y1 (en) | 1988-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019850004477U Expired KR880000669Y1 (en) | 1985-04-19 | 1985-04-19 | Speed control circuit of motor |
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| Country | Link |
|---|---|
| KR (1) | KR880000669Y1 (en) |
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1985
- 1985-04-19 KR KR2019850004477U patent/KR880000669Y1/en not_active Expired
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| Publication number | Publication date |
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| KR860013996U (en) | 1986-11-20 |
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Payment date: 19971215 Start annual number: 11 End annual number: 11 |
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| FPAY | Annual fee payment |
Payment date: 19990227 Year of fee payment: 12 |
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| UR1001 | Payment of annual fee |
Payment date: 19990227 Start annual number: 12 End annual number: 12 |
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| EXPY | Expiration of term | ||
| UC1801 | Expiration of term |