KR910004687Y1 - Energy saving style power circuit of vtr - Google Patents
Energy saving style power circuit of vtr Download PDFInfo
- Publication number
- KR910004687Y1 KR910004687Y1 KR2019860022190U KR860022190U KR910004687Y1 KR 910004687 Y1 KR910004687 Y1 KR 910004687Y1 KR 2019860022190 U KR2019860022190 U KR 2019860022190U KR 860022190 U KR860022190 U KR 860022190U KR 910004687 Y1 KR910004687 Y1 KR 910004687Y1
- Authority
- KR
- South Korea
- Prior art keywords
- vtr
- power supply
- main power
- tape
- cassette tape
- Prior art date
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/02—Control of operating function, e.g. switching from recording to reproducing
Landscapes
- Management Or Editing Of Information On Record Carriers (AREA)
Abstract
내용 없음.No content.
Description
제 1 도는 본 고안의 회로도이다.1 is a circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 정류부 2 : 카세트테이프감지부1: rectifying part 2: cassette tape detecting part
3 : 주전원공급부 SW1 : 테이프삽입 검출용 스위치3: main power supply SW1: tape insertion detection switch
SW2 : 테이프유무 검출용 스위치 Q1~Q4 : 트랜지스터SW2: Tape presence detection switch Q1 ~ Q4: Transistor
ZD1 : 제너다이오드ZD1: Zener Diode
본 고안은 VTR의 절전형 전원회로에 관한 것으로, 특히 테이프가 VTR에 삽입되는 경우에는 주전원이 공급되고, 테이프 추출시에는 주전원을 단절시키도록 된 VTR의 절전형 전원회로에 관한 것이다.The present invention relates to a power-saving power supply circuit of a VTR, and more particularly, to a power-saving power supply circuit of a VTR such that the main power is supplied when the tape is inserted into the VTR, and the main power is disconnected when the tape is extracted.
일반적으로 VTR의 미사용시에도 AC전원코드가 AC전원에 연결된 상태로 있게 되면 전원사위치의 온,오프에 따라 전원입력을 제어하도록 되어 VTR에서 내부적으로 마이컴과 시스콘을 동작시키지 않더라도 VTR의 전원코드가 AC 전원에 연결된 상태에서는 AC전원이 VTR에 인가되게 되어 주전원(13V)이 항상 공급되게 되므로 전력의 손실이 초래되게 되고, 시스템에 좋지 않은 영향이 있었다.In general, if the AC power cord remains connected to the AC power even when the VTR is not in use, the power input is controlled according to the on / off of the power source, so that the power cord of the VTR is not operated internally in the VTR. When AC is connected to the AC power, AC power is applied to the VTR so that the main power (13V) is always supplied, resulting in loss of power, which has a bad effect on the system.
본 고안은 상기한 실정을 감안하여 안출된 것으로, VTR의 전원코드가 AC전원에 연결되어 있어 AC전원이 인가되더라도 비디오테이프가 삽입되는 경우에는 주전원(13V)을 출력하게 되고, 이와 달리 비디오테이프가 삽입되지 않거나 비디오테이프가 추출되게 되면 주전원(13V)을 단절하도록 된 VTR의 절전형 전원회로를 제공함에 그 목적이 있다.The present invention is conceived in view of the above situation, the power cord of the VTR is connected to the AC power source, even if the AC power is applied when the video tape is inserted to output the main power (13V), unlike the video tape It is an object of the present invention to provide a power-saving power supply circuit of a VTR that is to be disconnected from the main power supply (13V) when not inserted or the video tape is extracted.
이하 본 고안의 구성 및 작용, 효과를 예시도면에 의거 상세히 설명한다.Hereinafter, the configuration, operation, and effects of the present invention will be described in detail based on the drawings.
본 고안 AC입력단과 브릿지정류회로로 이루어진 정류부를 구비한 VTR 전원회로에 있어서, 카세트테이프의 삽입 및 추출을 감지하는 카세트테이프감지부와, 이 카세트테이프감지부의 제어에 의해 VTR에 주전원을 공급하는 주전원공급부로 이루어진 구조로 되어 있다.In the VTR power supply circuit having a rectifying part consisting of an AC input stage and a bridge rectifying circuit of the present invention, a cassette tape detecting portion for detecting insertion and extraction of a cassette tape, and a main power supply for supplying main power to the VTR by controlling the cassette tape detecting portion. It has a structure consisting of a supply part.
제 1 도는 상기한 구조로 되어 있는 본 고안의 회로도를 나타낸 것으로, 이에 대한 동작은 다음과 같다.1 is a circuit diagram of the present invention having the above-described structure, the operation thereof is as follows.
먼저, AC전원에 연결되어 있는 VTR의 비동작상태에서 비디오테이프를 삽입하지 않은 경우에는 테이프삽입/유무검출용 스위치(SW1,SW2)가 오프상태로 되어 트랜지스터(Q1)가 턴오프상태로 되고, 이에 따라 트랜지스터(Q2)도 턴오프됨과 더불어 트랜지스터(Q3,Q4)도 턴오프 되게 되므로 정류부(1)에서 출력되는 정류된 주전원(13V)이 후단에 인가되지 않게 된다.First, when the video tape is not inserted in the inactive state of the VTR connected to the AC power supply, the tape insertion / presence detection switches SW1 and SW2 are turned off so that the transistor Q1 is turned off. Accordingly, the transistor Q2 is turned off and the transistors Q3 and Q4 are also turned off, so that the rectified main power source 13V output from the rectifier 1 is not applied to the rear end.
이때 VTR을 동작상태로 하고 비디오테이프를 삽입 하게 되면 먼저 테이프삽입 검출용스위치(SW1)가 접속되어 콘덴서(C1)를 충전시킨 다음 트랜지스터(Q1)에 인가되므로 상기 트랜지스터(Q1)가 턴온되게 되고, 이에따라 트랜지스터(Q2~Q4)가 턴온되어 주전원(13V)이 후단에 인가되게 됨과 더불어 상기 테이프삽입 검출용스위치(SW1)에 나타나는 전원이 저항(R2)과 콘덴서(C2)의 시정수 만큼 지연된 다음 도시되지 않은 마이컴에 인가되어 비디오테이프를 안착시키기 위한 모터를 구동시키게된다. 그러면, 상기 테이프삽입 검출용스위치(SW1)가 비접속상태로 되지만 콘덴서(C1)에 충전된 저하가 저항(R1)을 통해 트랜지스터(Q1)를 인정시간 동안 동작시키게 되므로 주전원(13V)이 계속 공급되게 된다. 그후 비디오테이프가 VTR내부에서 완전히 안착되게 되면 테이프 유무검출용 스위치(SW2)가 접속되어 상기 콘덴서(C1)가 재충전되며, 이어 트랜지스터(Q1)가 턴온되므로 상기와 같이 각 트랜지스터(Q2~Q4)가 턴온된다. 따라서 주전원(13V)이 테이프가 안착된 동안에는 계속 공급되게 된다.At this time, when the VTR is operated and the video tape is inserted, the tape insertion detection switch SW1 is first connected to charge the capacitor C1 and then applied to the transistor Q1, so that the transistor Q1 is turned on. Accordingly, the transistors Q2 to Q4 are turned on so that the main power source 13V is applied to the rear end, and the power appearing at the tape insertion detection switch SW1 is delayed by the time constant of the resistor R2 and the capacitor C2. It is applied to the uncommitted microcomputer to drive the motor for seating the video tape. Then, the tape insertion detection switch SW1 is in a non-connected state, but since the drop charged in the capacitor C1 causes the transistor Q1 to operate for a recognition time through the resistor R1, the main power supply 13V is continuously supplied. Will be. After that, when the video tape is completely settled inside the VTR, the tape presence / absence switch SW2 is connected and the capacitor C1 is recharged. Then, the transistor Q1 is turned on so that each transistor Q2 to Q4 is turned on as described above. Is turned on. Therefore, the main power source 13V is continuously supplied while the tape is seated.
한편, 비디오테이프를 추출하기 위해 도시되지 않은 이젝트(Eject)키를 선택하면 테이프가 안착된 상태에서 추출되게 되므로 스위치(SW2)가 비접속상태로 되지만,콘덴서(C1)가 방전하기 시작하므로 트랜지스터(Q1)가 일정기간 동안 턴온상태를 유지하게 된다. 따라서 트랜지스터(Q2~Q4)가 일정시간 동안 턴온상태를 유지하게 되므로 주전원(13V)이 계속 공급되게 되어 테이프를 완전히 추출시키게 되고 이어 테이프가 완전히 추출됨과 더불어 콘덴서(C1)의 방전이 끝나게 되면 트랜지스터(Q1)가 턴오프되게 되므로 각 트랜지스터(Q2~Q4)도 턴오프되어 주전원(13V)의 공급이 단절되게 된다. 여기서 제너다이오드(ZD1)는 역전압을 방지하기 위해 설치된 것이다.On the other hand, if the eject key (not shown) is selected to extract the videotape, the switch SW2 is disconnected because the tape is extracted and the capacitor C1 starts to discharge. Q1) will remain turned on for a certain period of time. Therefore, since the transistors Q2 to Q4 are kept turned on for a predetermined time, the main power supply 13V is continuously supplied to completely extract the tape, and then the tape is completely extracted and the discharge of the capacitor C1 is completed. Since Q1) is turned off, each transistor Q2 to Q4 is also turned off so that the supply of the main power source 13V is cut off. Here, the zener diode ZD1 is installed to prevent reverse voltage.
상기한 바와같이 본 고안은 VTR을 사용하지 않을 때 VTR이 AC전원에 접속되었을 지라도 정류된 주전원이 VTR의 후속장치에 인가되는 것을 방지할 수 있게 되므로 전력손실을 감소시킬수 있게 되므로 제품의 기능과 고급화를 실현할 수 있게 된다.As described above, the present invention can prevent the rectified main power from being applied to the subsequent device of the VTR even when the VTR is connected to the AC power source when the VTR is not used, thereby reducing the power loss. Can be realized.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860022190U KR910004687Y1 (en) | 1986-12-31 | 1986-12-31 | Energy saving style power circuit of vtr |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860022190U KR910004687Y1 (en) | 1986-12-31 | 1986-12-31 | Energy saving style power circuit of vtr |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR880013518U KR880013518U (en) | 1988-08-30 |
| KR910004687Y1 true KR910004687Y1 (en) | 1991-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860022190U KR910004687Y1 (en) | 1986-12-31 | 1986-12-31 | Energy saving style power circuit of vtr |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR910004687Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101941406B1 (en) * | 2018-07-09 | 2019-01-22 | 조상문 | Brazier type boiler having a water-tank of spiral structure |
-
1986
- 1986-12-31 KR KR2019860022190U patent/KR910004687Y1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101941406B1 (en) * | 2018-07-09 | 2019-01-22 | 조상문 | Brazier type boiler having a water-tank of spiral structure |
Also Published As
| Publication number | Publication date |
|---|---|
| KR880013518U (en) | 1988-08-30 |
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