JPS58101310U - Input/output circuit of magnetic recording/reproducing device - Google Patents
Input/output circuit of magnetic recording/reproducing deviceInfo
- Publication number
- JPS58101310U JPS58101310U JP19722281U JP19722281U JPS58101310U JP S58101310 U JPS58101310 U JP S58101310U JP 19722281 U JP19722281 U JP 19722281U JP 19722281 U JP19722281 U JP 19722281U JP S58101310 U JPS58101310 U JP S58101310U
- Authority
- JP
- Japan
- Prior art keywords
- input
- output circuit
- transistor
- recording
- reproducing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図は従来の入出力回路を示す接続図、第2図は本考
案に依る磁気記録再生装置の入出力回路の一例を示す接
続図である。
1・・・入出カドランス、IA、IB、 1cmニー
1次。
2次、3次巻線、2・・・入出カライン、3・・・記録
信号入力回路、4・・・増幅器、5・・・再生信号出力
回路、8・・・バイアス回路、T1.T3・・・スイッ
チ用トランジスタ、T2・・・入力トランジスタ、■い
、■PB・・・第1、第2の電源。FIG. 1 is a connection diagram showing a conventional input/output circuit, and FIG. 2 is a connection diagram showing an example of an input/output circuit of a magnetic recording/reproducing apparatus according to the present invention. 1... Input/output quadrance, IA, IB, 1cm knee primary. Secondary and tertiary windings, 2... Input/output line, 3... Recording signal input circuit, 4... Amplifier, 5... Playback signal output circuit, 8... Bias circuit, T1. T3...Switch transistor, T2...Input transistor, ■PB...First and second power supplies.
Claims (1)
号出力回路及び記録信号入力回路を有し、上記再生信号
出力回路はゲートを上記入出カラインに接続した電界効
果型トランジスタでなる入力トランジスタと、この入力
トランジスタに直列に接続されたスイッチ用トランジス
タとを具え、記録モード時上記スイッチ用トランジスタ
をオフ動作させることにより上記記録信号入力回路から
上記入出カラインに与えられる記録信号を上記トランジ
スタによって阻止するようになされた磁気記録再生装置
の入出力回路において、記録モード時上記スイッチ用ト
ランジスタがオフになることにより上記入力トランジス
タのゲートとドレイン及びソースとの間が逆バイアスと
なる電源を上記入力トランジスタのゲート、ドレイン及
びソースに接続したことを特徴とする磁気記録再生装置
の入出力回路。It has a reproduction signal output circuit and a recording signal input circuit commonly connected to the input/output line to the recording/reproducing head, and the reproduction signal output circuit has an input transistor made of a field effect transistor whose gate is connected to the input/output line. , a switching transistor connected in series to the input transistor, and by turning off the switching transistor in a recording mode, the recording signal applied from the recording signal input circuit to the input/output line is blocked by the transistor. In the input/output circuit of a magnetic recording/reproducing device, the input transistor is connected to a power source that creates a reverse bias between the gate, drain, and source of the input transistor when the switching transistor is turned off during the recording mode. An input/output circuit for a magnetic recording/reproducing device, characterized in that the input/output circuit is connected to the gate, drain, and source of the magnetic recording/reproducing device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19722281U JPS58101310U (en) | 1981-12-29 | 1981-12-29 | Input/output circuit of magnetic recording/reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19722281U JPS58101310U (en) | 1981-12-29 | 1981-12-29 | Input/output circuit of magnetic recording/reproducing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58101310U true JPS58101310U (en) | 1983-07-09 |
JPH0222803Y2 JPH0222803Y2 (en) | 1990-06-20 |
Family
ID=30110434
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19722281U Granted JPS58101310U (en) | 1981-12-29 | 1981-12-29 | Input/output circuit of magnetic recording/reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58101310U (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5545530U (en) * | 1978-09-18 | 1980-03-25 | ||
JPS5661007A (en) * | 1979-10-25 | 1981-05-26 | Tdk Corp | Switching system for recording and reproduction |
-
1981
- 1981-12-29 JP JP19722281U patent/JPS58101310U/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5545530U (en) * | 1978-09-18 | 1980-03-25 | ||
JPS5661007A (en) * | 1979-10-25 | 1981-05-26 | Tdk Corp | Switching system for recording and reproduction |
Also Published As
Publication number | Publication date |
---|---|
JPH0222803Y2 (en) | 1990-06-20 |
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