JPS58101310U - Input/output circuit of magnetic recording/reproducing device - Google Patents

Input/output circuit of magnetic recording/reproducing device

Info

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
Application number
JP19722281U
Other languages
Japanese (ja)
Other versions
JPH0222803Y2 (en
Inventor
功 横山
義樹 城地
Original Assignee
ソニー株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ソニー株式会社 filed Critical ソニー株式会社
Priority to JP19722281U priority Critical patent/JPS58101310U/en
Publication of JPS58101310U publication Critical patent/JPS58101310U/en
Application granted granted Critical
Publication of JPH0222803Y2 publication Critical patent/JPH0222803Y2/ja
Granted legal-status Critical Current

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

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] 録再ヘッドへの入出カラインに共通に接続された再生信
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.
JP19722281U 1981-12-29 1981-12-29 Input/output circuit of magnetic recording/reproducing device Granted JPS58101310U (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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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