KR900009082Y1 - Recording and playback switching circuit of small cassette - Google Patents
Recording and playback switching circuit of small cassette Download PDFInfo
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- KR900009082Y1 KR900009082Y1 KR2019860014673U KR860014673U KR900009082Y1 KR 900009082 Y1 KR900009082 Y1 KR 900009082Y1 KR 2019860014673 U KR2019860014673 U KR 2019860014673U KR 860014673 U KR860014673 U KR 860014673U KR 900009082 Y1 KR900009082 Y1 KR 900009082Y1
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/027—Analogue recording
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Abstract
내용 없음.No content.
Description
본 고안의 회로도.Circuit diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
LS-1, LS-2 : 리프 스위치 D1: 다이오드LS-1, LS-2: Leaf switch D 1 : Diode
LED1, LED2: 발광다이오드LED 1 , LED 2 : Light Emitting Diode
Q1, PQ1-PQn, RQ1-RQn : 트랜지스터Q 1 , PQ 1 -PQn, RQ 1 -RQn: Transistor
R1, R2, R3-Rn, R3'-Rn' : 저항 1 : 녹음 스위칭 회로R 1 , R 2 , R 3 -Rn, R 3 '-Rn': Resistor 1: Recording switching circuit
2 : 재생 스위칭 회로2: regenerative switching circuit
본 고안은 녹음 재생 전환 스위치를 삭제하여 소형 카세트의 설계를 용이하게 해주고 더욱 소형화 할 수 있도록 한 소형 카셋트의 녹음 재생 스위칭 회로에 관한 것이다.The present invention relates to a recording and reproducing switching circuit of a small cassette, which facilitates the design of the small cassette by eliminating the recording and reproducing switch, and further miniaturization.
기존의 소형 카셋트에서는 녹음, 재생 전환 스위치를 사용하여 녹음동작과 재생 동작을 전환시켜 왔으나 녹음 재생 전환 스위치는 카셋트의 내부 공간을 많이 차지하게 되어 소형화에 어려움이 있으며 이를 녹음 또는 재생 동작으로 절환시키는 기구적 구조가 어려운 단점이 있는 것이다.In the existing small cassette, recording and playback switching switch has been used to switch between recording and playback operations. However, recording and playback switching switches occupy a lot of the internal space of the cassette, making it difficult to miniaturize. The enemy structure is difficult.
또한 소형 카세트에서는 녹음 동작과 재생 동작의 진행 상황을 표시해 주기 위하여 발광다이오드를 사용하고 있으나 이와 같은 발광다이오드로 녹음 동작과 재생동작을 구분해 주기 위해서는 2접점 스위치가 필요하게 되므로써 구조가 복잡해지고 제품의 소형, 경량화가 어렵다는 단점이 있는 것이다.In addition, a small cassette uses a light emitting diode to indicate the progress of recording and playback operations. However, a two-contact switch is required to distinguish between recording and playback operations with the light emitting diode, which makes the structure complicated and the It is a disadvantage that it is difficult to reduce the size and weight.
본 고안은 이와 같은 점을 감안하여 녹음 재생 전환 스위치를 삭제하는 대신 데크의 리프 스위치를 이용하여 트랜지스터 스위칭을 이루는 회로를 구성하므로써 데크의 내부 공간을 줄일 수 있고 2접점 녹음 재생 스위치를 없앨 수 있도록 한 소형 카셋트의 녹음 재생 스위칭 회로에 관한 것으로 리프 스위치에 연결된 트랜지스터를 제어하여 녹음 재생 표시용 발광 다이오드를 점등시킴과 동시에 녹음 스위칭회로와 재생 스위칭 회로의 동작을 제어하도록 한 것이다.In view of the above, the present invention can reduce the internal space of the deck and eliminate the two-contact recording and playback switch by constructing a circuit for transistor switching by using the deck leaf switch instead of deleting the recording and playback switch. The present invention relates to a recording and reproducing switching circuit of a small cassette, which controls a transistor connected to a leaf switch to light up a light emitting diode for recording and reproducing display and to control the operation of the recording and reproducing switching circuit.
이를 첨부 도면에 의하여 상세히 설명하면 다음과 같다.This will be described in detail with reference to the accompanying drawings.
전원(E)이 인가되는 리프 스위치(LS-1)에 트랜지스터(Q1)의 에미터와 리프 스위치(LS-2)를 연결함과 동시에 가변저항(VR1)과 저항(R1)을 통하여 트랜지스터(Q1)의 베이스를 연결하고 트랜지스터(Q1)의 콜렉터에는 발광다이오드(LED1)를 통하여 저항(R2)을 연결함과 동시에 재생 스위칭 회로(2)의 저항(R3-Rn)을 연결 구성한다.The emitter of the transistor Q 1 and the leaf switch LS-2 are connected to the leaf switch LS-1 to which the power source E is applied, and at the same time, through the variable resistor VR 1 and the resistor R 1 . resistance (R 3 -Rn) for connecting the base of the transistor (Q 1) and the transistor (Q 1), the collector is a light emitting diode connected to the resistor (R 2) through (LED 1) and at the same time play the switching circuit 2 of Configure the connection.
이때 재생 스위칭 회로(2)는 다수개의 저항(R3-Rn)에 다수개의 트랜지스터(PQ1-PQn)의 베이스를 연결하여 구성하며 데크의 전원 투입 스위치가 "온"되면 리프스위치(LS-1)가 "온"되고 데크의 녹음 버튼을 누르면 리프 스위치(LS-2)가 "온"되도록 구성되어 있다. 그리고 리프 스위치(LS-2)에 다이오드(D1)와 발광다이오드(LED2) 및 녹음 스위칭 회로(1)를 연결하되 다이오드(D1)는 트랜지스터(Q1)의 베이스에 연결하고 발광다이오드(LED2)는 저항(R2)을 통하여 접지되게 구성한다.At this time, the regenerative switching circuit 2 is configured by connecting the bases of the plurality of transistors PQ 1 -PQn to the plurality of resistors R 3 -Rn, and the leaf switch LS-1 when the power supply switch of the deck is "on". Is turned on and the leaf switch LS-2 is turned on when the record button on the deck is pressed. The diode D 1 , the light emitting diode LED 2 , and the recording switching circuit 1 are connected to the leaf switch LS-2, but the diode D 1 is connected to the base of the transistor Q 1 , and the light emitting diode ( LED 2 ) is configured to be grounded through resistor R 2 .
또한 녹음 스위칭 회로(1)는 다수개의 저항(R3'-Rn')에 의해 바이어스되는 다수개의 트랜지스터(RQ1-RQn)로 구성한다.In addition, the recording switching circuit 1 is composed of a plurality of transistors RQ 1 -RQn biased by a plurality of resistors R 3 '-Rn'.
이와 같이 구성된 본 고안에서 데크의 전원 투입 스위치를 "온"시키면 이에 연동되는 리프 스위치(LS-1)가 "온"되어 전원(E)이 트랜지스터(Q1)의 에미터에 인가됨과 동시에 가변저항(VR1)과 저항(R1)을 통하여 트랜지스터(Q1)의 베이스에 인가된다.When the power supply switch of the deck is "on" in the present invention configured as described above, the leaf switch LS-1 interlocked with the deck is "on" so that the power supply E is applied to the emitter of the transistor Q 1 and at the same time the variable resistor It is applied to the base of transistor Q 1 through VR 1 and resistor R 1 .
이때 가변저항(SUR1)과 저항(R1)에 의한 동작 바이어스 전압이 결정되므로서 트랜지스터(Q1)는 도통하게 된다.At this time, since the operating bias voltage of the variable resistor SUR 1 and the resistor R 1 is determined, the transistor Q 1 becomes conductive.
그러므로 트랜지스터(Q1)의 콜렉터측 출력이 발광다이오드(LED1)를 점등시켜 재생 동작중임을 나타내 주게 되며 발광다이오드(LED1)의 불의 밝기는 저항(R2)의 저항값에 의하여 결정되어 진다.Therefore, the collector-side output of transistor Q 1 lights up LED 1 to indicate that it is in regeneration operation. The brightness of the light of LED 1 is determined by the resistance of resistor R 2 . .
그리고 트랜지스터(Q1)의 콜렉터 출력이 재생 스위칭회로(2)의 저항(R3-Rn)을 통하여 트랜지스터(PQ1-PQn)에 베이스에 인가되므로써 트랜지스터(PQ1-PQn)는 도통하게 된다.The transistors PQ 1 -PQn become conductive by applying the collector output of the transistor Q 1 to the base of the transistors PQ 1 -PQn via the resistors R 3 -Rn of the regenerative switching circuit 2.
따라서 트랜지스터(PQ1-PQn)의 에미터와 콜렉터에 연결된 단자(1)과 (2), (3)과 (4)가 접속되므로서 재생 동작시 녹음 재생 전환 스위치를 사용하여 접점을 연결시키는 동작과 동일한 동작을 하게 되어 녹음 재생 전환 스위치가 필요없는 재생 동작을 행할 수 있는 것이다.Therefore, the terminals (1), (2), (3) and (4) connected to the emitter and the collector of the transistors (PQ 1 -PQn) are connected so that the contact is connected by using the recording / playback switching switch during the playback operation. By performing the same operation as in the above, it is possible to perform a reproducing operation that does not require a recording reproducing switch.
한편 녹음 동작을 행하려 하면 데크의 녹음 버튼을 눌러 이와 연동하는 리프 스위치(LS-2)를 "온"시켜 데크의 전원이 리프 스위치(LS-1)(LS-2)와 다이오드(D1)를 통하여 트랜지스터(Q1)의 베이스에 인가됨과 동시에 발광다이오드(LED2)와 녹음 스위칭 회로(1)에 인가되게 된다.On the other hand, if you want to perform a recording operation, press the record button on the deck to turn on the leaf switch (LS-2) associated with it, and the deck's power will turn on the leaf switch (LS-1) (LS-2) and diode (D 1 ). It is applied to the base of the transistor Q 1 and to the light emitting diode LED 2 and the recording switching circuit 1 at the same time.
따라서 트랜지스터(Q1)의 베이스에는 다이오드(D)를 통하여 전원(E)이 인가되므로써 역바이어스 전압이 걸려 트랜지스터(Q1)는 부도통하게 되어 재생 스위칭 회로(2) 및 발광다이오드(LED1)가 동작하지 않게 된다.Accordingly, since the power source E is applied to the base of the transistor Q 1 through the diode D, a reverse bias voltage is applied, thereby causing the transistor Q 1 to become non-conductive, so that the regenerative switching circuit 2 and the light emitting diode LED 1 It will not work.
그리고 발광다이오드(LED2)에 전원(E)이 인가되어 발광다이오드(LED2)를 점등시킴으로써 녹음 동작을 행하고 있음을 알려주며 발광다이오드(LED2)의 밝기는 저항(R2)의 저항값에 의하여 조절할 수 있다.And brightness of the LED informs that there is a power supply (E) to (LED 2) is a light emitting diode subjected to recording operation by the lighting of (LED 2) light emitting diode (LED 2), by the resistance of the resistor (R 2) I can regulate it.
또한 전원(E)이 녹음 스위칭 회로(1)의 저항(R3'-Rn')을 통하여 트랜지스터(RQ1-RQn)의 베이스에 인가되므로 트랜지스터(RQ1-RQn)는 도통하게 된다.In addition, since the power supply E is applied to the bases of the transistors RQ 1 -RQn through the resistors R 3 '-Rn' of the recording switching circuit 1, the transistors RQ 1 -RQn become conductive.
따라서 트랜지스터(RQ1-RQn)의 에미터와 콜렉터와 연결된 단자(1')과 (2'), (3')과 (4')가 접속되므로써 녹음 동작시 녹음 재생 전환 스위치를 사용하여 접점을 연결시키는 동작과 동일한 동작을 하게 되어 녹음 재생 스위치가 필요 없는 녹음 동작을 행할 수 있는 것이다.Therefore, the terminals (1 '), (2'), (3 ') and (4') connected to the emitter and collector of the transistors (RQ 1 -RQn) are connected so that the contacts can be The same operation as that of the connection is performed so that the recording operation without the recording / playback switch can be performed.
이상에서와 같이 본 고안은 녹음 재생 전환 스위치를 사용하지 않고 리프 스위치(LS-1)(LS-2)로 트랜지스터(Q1)의 구동을 제어하여 바로강다이오드(LED1)(LED2)의 점등 및 녹음 스위칭 회로(1)와 재생 스위칭 회로(2)의 동작을 제어하도록 하므로써 녹음 재생 전환 스위치를 사용한 것과 동일한 역활로 데크를 구동시키도록 한 고안으로 녹음 재생 전환 스위치가 필요없게 되어 공간 면적이 적어지게 되어 초소형 카셋트를 설계 할 수 있고 기계적 스위치를 동작시키지 않아 기구적 구조가 간단해지며 녹음 및 재생 상태 표시를 쉽게 할 수 있어 제품의 소형, 경량화 및 품질 향상을 기대할 수 있는 효과가 있는 것이다.The subject innovation, as in the above is a playback switch directly steel diode by controlling the driving of without using the switch leaf switch (LS-1) the transistor (Q 1) to (LS-2) (LED 1 ) (LED 2) It is designed to drive the deck with the same role as the recording and playback switching switch by controlling the lighting and recording switching circuit 1 and the playback switching circuit 2 to operate, thus eliminating the need for the recording and playback switching switch. It is possible to design an ultra compact cassette, and because the mechanical switch is not operated, the mechanical structure is simplified and the recording and playback status can be easily displayed, which is expected to reduce the size, weight, and quality of the product.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860014673U KR900009082Y1 (en) | 1986-09-24 | 1986-09-24 | Recording and playback switching circuit of small cassette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019860014673U KR900009082Y1 (en) | 1986-09-24 | 1986-09-24 | Recording and playback switching circuit of small cassette |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR880006848U KR880006848U (en) | 1988-05-31 |
| KR900009082Y1 true KR900009082Y1 (en) | 1990-09-29 |
Family
ID=19255887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019860014673U Expired KR900009082Y1 (en) | 1986-09-24 | 1986-09-24 | Recording and playback switching circuit of small cassette |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR900009082Y1 (en) |
-
1986
- 1986-09-24 KR KR2019860014673U patent/KR900009082Y1/en not_active Expired
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| Publication number | Publication date |
|---|---|
| KR880006848U (en) | 1988-05-31 |
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