KR850003115Y1 - Recording or reproducing switching circuit - Google Patents
Recording or reproducing switching circuit Download PDFInfo
- Publication number
- KR850003115Y1 KR850003115Y1 KR2019830009997U KR830009997U KR850003115Y1 KR 850003115 Y1 KR850003115 Y1 KR 850003115Y1 KR 2019830009997 U KR2019830009997 U KR 2019830009997U KR 830009997 U KR830009997 U KR 830009997U KR 850003115 Y1 KR850003115 Y1 KR 850003115Y1
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- South Korea
- Prior art keywords
- recording
- amplifier
- circuit
- switching circuit
- transistor
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- 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
- G11B15/10—Manually-operated control; Solenoid-operated control
- G11B15/103—Manually-operated control; Solenoid-operated control electrically operated
-
- 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
- G11B15/12—Masking of heads; circuits for Selecting or switching of heads between operative and inoperative functions or between different operative functions or for selection between operative heads; Masking of beams, e.g. of light beams
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- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
내용 없음.No content.
Description
제1도는 본 고안의 회로도.1 is a circuit diagram of the present invention.
제2도는 본 고안의 계통도.2 is a schematic diagram of the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1, 2, 3 : 스위칭회로 A1, A2, A3: 증폭부1, 2, 3: switching circuit A 1 , A 2 , A 3 : amplifier
OSC : 발진회로 4 : 선로제어부OSC: Oscillator 4: Line control part
SV : 재생시 볼륨 저항 VR : 녹음시 볼륨저항SV: Volume resistance during playback VR: Volume resistance during recording
본 고안은 카세트 녹음기의 녹음 재생회로 접속 변환장치에 관한 것으로서, 단 하나의 전자식 스위치만으로서 녹음 및 재생회로를 자유자재로 접속변환할 수 있도록 한 회로이다.The present invention relates to a recording and reproducing circuit connection converter of a cassette recorder, and is a circuit capable of freely converting recording and reproducing circuits with only one electronic switch.
통상적으로 카세트 테이프에 음을 녹음시킨다던가 재생시키고자 할시에 있어서는 녹음 버튼을 누른후 진행 버튼을 눌러야만이 녹음장치가 이루어지고, 재생시에 있어서도 녹음 버튼을 복귀시킨후 진행버튼을 눌러 재생장치가 이루어지도록 되어있다.Normally, when you want to record or play a sound on a cassette tape, you need to press the record button and then press the advance button to make this recording device. It is meant to be built.
그런데, 이러한 통상적인 녹음, 재생등의 변환장치는 기계적인 메카니즘을 변환시키는 것으로서 사용자로 하여금 조작상의 번거로움을 느끼게 할뿐아니라, 기기의 신뢰도가 저하되고, 제작에 있어서도 용이치 못하며, 따라서 녹음, 재생을 빈번히 조작해야 할 시에는 접촉 변환시키는 시간적인 문제, 불편함등 많은 문제점을 내포하고 있는 것이다.However, such a conventional recording and reproducing apparatus converts a mechanical mechanism, which not only makes the user feel troublesome in operation, but also reduces the reliability of the apparatus and is not easy in production. When the playback must be frequently operated, there are many problems such as time conversion and inconvenience of contact conversion.
본 고안은 이와같은 점을 감안하여 녹음, 재생시에 접속변환을 용이하게 할 수 있는 전자식 변환장치를 안출한 것으로서 이를 도면에 의거 상세히 설명하면 다음과 같다.The present invention has been made in view of the above-described electronic conversion device that can facilitate the connection conversion during recording and playback, as described in detail based on the drawings as follows.
즉, 입력전원 스위치(S2)의 고정접점에 녹음시 녹음재생헤드(HD1)에 바이어스전류를 공급함과 동시에 테이프를 소거시키기 위한 발진회로(OSC)를 제어하는 스위칭회로(1)와 재생시 녹음신호 전류 증폭기(A3)의 신호 전류가 녹음재생헤드(HD1)로 유입되는 것을 막기 위한 스위칭회로(2)및 녹음 재생시 재생음 증폭회로(A2)로 유입되는 것을 제어하기 위한 스위칭회로(3)를 연결하고, 상기 증폭기(A2)의 출력단에 재생시 볼륨저항(SV)을 연결하되, 입력 신호원 증폭기(A1)에 연결된 스위치(S1)와 접속 시키고, 이 접속 시키고, 이 접속점과 상기 증폭기(A3)사이에 녹음시 볼륨저항(VR)및 다이오드(D1, D2)등으로 구성되어 신호가 가변저항(VR)을 통하는 선로를 제어하는 선로 제어부(4)를 연결하여 구성된 것으로서, 스위치(S1)및(S2)는 연동되도록 한 것이다.That is, the switching circuit 1 controls the oscillation circuit OSC for erasing the tape while supplying a bias current to the recording / playback head HD 1 at the time of recording at the fixed contact point of the input power switch S 2 and at the time of reproduction. Switching circuit 2 for preventing the signal current of the recording signal current amplifier A 3 from flowing into the recording / reproducing head HD 1 and switching circuit for controlling the introduction of the reproducing sound amplification circuit A 2 during recording and reproducing. (3) and connect the volume resistor (SV) at the time of regeneration to the output terminal of the amplifier (A 2 ), and connect it with the switch (S 1 ) connected to the input signal source amplifier (A 1 ), Between the connection point and the amplifier A 3 , the line control unit 4 is composed of a volume resistor VR and a diode D 1 , D 2 to control a line through which the signal passes through the variable resistor VR. As configured in connection, the switches (S 1 ) and (S 2 ) are to be interlocked.
미설명부호 HD2는 소거헤드이고, Q1-Q5는 스위칭 트랜지스터이다.Reference numeral HD 2 is an erase head, and Q 1 -Q 5 are switching transistors.
이와같이 구성된 본 고안의 동작상태를 설명하면, 녹음할 경우에 있어서는 연동스위치(S1, S2)를 ①의 위치로 하여 신호를 연결시키면, 트랜지스터(Q2)의 베이스에 전압이 공급되어 콜렉터와 에미터가 통하므로 트랜지스터(Q3)는 ON된다.Referring to the operation state of the present invention configured as described above, in the case of recording, when the interlock switch (S 1 , S 2 ) is connected to the position of ①, the voltage is supplied to the base of the transistor (Q 2 ) and the collector and Transistor Q 3 is turned on because the emitter passes.
따라서, 트랜지스터(Q1)의 베이스전류가 트랜지스터(Q2)의 콜렉터로 유입되어 트랜지스터(Q1)의 베이스 전류는 적어지므로 에미터로 부터 콜렉터에 전류가 흘러 PNP형 트랜지스터(R1)은 ON되고 이어서, 녹음 바이어스 발진회로(OSC)가 발진을 하게되는데, 이 발진전류는 소거헤드(HD2)에 흘러 테이프를 소거시키고 일부 전류는 트랜지스터(Q3)의 베이스에 가해져 트랜지스터(Q3)가 OFF되고, 이로 인해 트랜지스터(Q4)가 OFF상태가 되므로 녹음재생헤드(HD1)로 전류가 흘러 녹음 바이어스를 걸게됨과 동시에 저항(R6)에 흐르던 DC전류는 다이오드(D2)를 도통시키며, 다이오드(D1)를 차단시켜 외부음성 신호가 증폭기(A1)를 거쳐 증폭된후 볼륨(VR)및 다이오드(D2)를 통해서 녹음신호 증폭기(A3)에 입력되는 것이다.Thus, the transistor base current is flowing into the collector of the transistor (Q 2) transistors the base current is a current flowing in the collector becomes less from the emitter PNP type transistor (R 1) of the (Q 1) of the (Q 1) is ON and subsequently, the recording bias oscillation circuit (OSC) that there is the oscillation, the oscillation current flowing in the erasing head (HD 2) and erasing the tape, some current is applied to the base of the transistor (Q 3) and the transistor (Q 3) Since the transistor Q 4 is turned off, the current flows to the recording / reproducing head HD 1 to apply the recording bias, and at the same time, the DC current flowing through the resistor R 6 conducts the diode D 2 . By blocking the diode D 1 , the external voice signal is amplified through the amplifier A 1 and then input to the recording signal amplifier A 3 through the volume VR and the diode D 2 .
이후 녹음 신호 증폭기(A3)의 전류가 녹음 바이어스 발진회로(OSC)에서 나오는 녹음 바이어스 전류와 함께 트랜지스터(Q4)가 OFF된 상태에서 녹음재생헤드(HD1)에 가해주어 녹음을 하게 되는 것으로서, 이때 트랜지스터(Q5)는 베이스에 가해진 바이어스 전압으로 ON상태이므로 재생 증폭기(A2)의 입력을 쇼트시켜 전류가 유입되는 것을 차단시키게 된다.After that, the current of the recording signal amplifier A 3 is applied to the recording and playback head HD 1 while the transistor Q 4 is turned off together with the recording bias current from the recording bias oscillation circuit OSC. In this case, since the transistor Q 5 is in the ON state with the bias voltage applied to the base, the transistor Q 5 shorts the input of the regenerative amplifier A 2 to block the flow of current.
한편, 재생시에 있어서는 연동스위치(S1, S2)를 ②의 위치로 하여 신호를 연결시키면, 녹음시의 트랜지스터(Q2)(Q3)(Q5)및 저항(R6)에 가하던 전류를 차단시키게 되고, 저항(R3)(R4)(R5)에 흐르던 전류가 정상적으로 흐르게 되면서 다이오드(D1)를 도통시킴과 동시에 다이오드(D2)를 차단시켜 녹음 재생헤드(HD1)로부터의 음성신호가 다이오드(D1)를 통하여 녹음신호 증폭기(A3)에 가해지므로 이때에는 음량조절볼륨(VR)을 가변시키더라도 음량변화에는 영향을 주지 않게 되는 것이다.On the other hand, when the signals are connected with the interlock switch (S 1 , S 2 ) at the position of ② during playback, the transistors Q 2 (Q 3 ) (Q 5 ) and resistor (R 6 ) applied during recording are applied. and thereby cut off the current, the resistance (R 3) (R 4) (R 5) shuts off the diode diode (D 2) to (D1) conducting Sikkim and at the same time as flow is flowing current normally the recording and playback head (HD 1) Since the audio signal from is applied to the recording signal amplifier (A 3 ) through the diode (D 1 ), even if the volume control volume (VR) is changed, it does not affect the volume change.
한편, 트랜지스터(Q2)의 베이스에는 바이어스 전압이 공급되지 않아 트랜지스터(Q2)는 OFF되고, 이로써 트랜지스터(Q1)의 베이스전위가 에미터전위와 동전위가 되어 트랜지스터(Q1)가 OFF되므로 바이어스 발진회로는 발진회로(OSC)는 발진을 중단한다.On the other hand, and it is OFF because the base of the transistor (Q 2) has no bias voltage is supplied to the transistor (Q 2), whereby the base potential of the transistor (Q 1) is an emitter grounds above the same potential because the transistor (Q 1) OFF In the bias oscillator circuit, the oscillator circuit (OSC) stops oscillation.
따라서, 테이프 소거작용이 중단되고 바이어스 전류 또한 차단되며, 트랜지스터(Q3)의 베이스에는 전원이 차단되며 트랜지스터(Q3)가 ON되고, 트랜지스터(Q4)의 베이스에 전원이 공급되어 트랜지스터(Q4)는 ON되므로 녹음신호증폭기(A3)의 출력이 쇼트상태가 된다.Thus, it will stop the tape scavenging and bias current also cut off, the base of the transistor (Q 3) and the power is cut off transistor (Q 3) is ON and power is supplied to the base of the transistor (Q 4) transistors (Q 4 ) is ON, so the output of the recording signal amplifier (A 3 ) is shorted.
또한, 트랜지스터(Q5)의 베이스에 바이어스전압이 공급되지 않음으로 트랜지스터(Q5)는 OFF되어 재생시 녹음재생헤드(HD1)로 부터 재생된 음은 재생증폭기(A2)로 유입되어 증폭된 다음 재생 볼륨저항(SV)을 거쳐 다이오드(D1)를 통하여 녹음신호증폭기(A3)에 유입되는 것이다.In addition, no bias voltage is supplied to the base of the transistor (Q 5) of transistors (Q 5) is is reproduced from the recording and playback head (HD 1) when reproducing sound OFF enters the playback amplifier (A 2) amplifying Then, it is introduced into the recording signal amplifier A 3 through the diode D 1 through the reproducing volume resistor SV.
이와같이 동작하는 본 고안에 있어서는 녹음 및 재생장치를 변환시키고자 할 경우에 단지 스위치 하나만을 ON, OFF시킴으로써 조작이 가능하게 되므로 스위칭 조작이 간편하여 사용하기 편리하고, 제작이 용이할 뿐더러 기기의 신뢰성을 증진시킬 수 있는 등 여러가지 유익한 특징을 지닌 것이다.In the present invention operating as described above, when switching the recording and playback apparatus, only one switch can be operated by turning on and off, so that the switching operation is simple, convenient to use, easy to manufacture, and reliable. It can be promoted and has many beneficial features.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019830009997U KR850003115Y1 (en) | 1983-11-25 | 1983-11-25 | Recording or reproducing switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019830009997U KR850003115Y1 (en) | 1983-11-25 | 1983-11-25 | Recording or reproducing switching circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR850004233U KR850004233U (en) | 1985-07-13 |
| KR850003115Y1 true KR850003115Y1 (en) | 1985-12-23 |
Family
ID=70159979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019830009997U KR850003115Y1 (en) | 1983-11-25 | 1983-11-25 | Recording or reproducing switching circuit |
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| Country | Link |
|---|---|
| KR (1) | KR850003115Y1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010106908A (en) * | 2000-05-24 | 2001-12-07 | 이완표 | Simulator for Running Animal |
-
1983
- 1983-11-25 KR KR2019830009997U patent/KR850003115Y1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010106908A (en) * | 2000-05-24 | 2001-12-07 | 이완표 | Simulator for Running Animal |
Also Published As
| Publication number | Publication date |
|---|---|
| KR850004233U (en) | 1985-07-13 |
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