JPS5814258U

JPS5814258U - Magnetic tape traveling device

Info

Publication number: JPS5814258U
Application number: JP10815781U
Authority: JP
Inventors: 平井　忠; 浩堀内
Original assignee: 三洋電機株式会社
Priority date: 1981-07-20
Filing date: 1981-07-20
Publication date: 1983-01-28

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

[Brief explanation of drawings]

第１図は従来の磁気テープ走行装置の簡略化した機構ブ
ロックの平面図、第２図以下の図面はこの考案の磁気テ
ープ走行装置の１実施例を示し、第２図は回路結線図、
第３図はテープの定速走行　′時に発生する力の説明図
、第４図はテープが−たん停止するまでに発生する力の
説明図、第５図は第２図の両モータのトルク−回転数特
性図、第６図は角速度と発生するトルクとの関係図、第
７図は時間と発生するトルクとの関係図である。３ａ、　３ｂ・・・キャプスタン、５ａ、　　５ｂ・・
・永久磁石式直流モータ、Ｉｌａ、Ｉｌｂ・・・第１、
第２信号入力端子、Ｄ３．Ｄ４・・・第３、第４ダイオ
ード、Ｑ９．ＱＩ　Ｏ・・・第９、第１０トランジスタ
。FIG. 1 is a plan view of a simplified mechanical block of a conventional magnetic tape running device, FIG. 2 and the following drawings show an embodiment of the magnetic tape running device of this invention, and FIG. 2 is a circuit wiring diagram;
Figure 3 is an explanatory diagram of the force generated when the tape runs at a constant speed, Figure 4 is an explanatory diagram of the force generated until the tape stops, and Figure 5 is an illustration of the torque of both motors in Figure 2. FIG. 6 is a diagram showing the relationship between angular velocity and generated torque, and FIG. 7 is a diagram showing the relationship between time and generated torque. 3a, 3b...capstan, 5a, 5b...
・Permanent magnet type DC motor, Ila, Ilb...1st,
second signal input terminal, D3. D4...Third and fourth diodes, Q9. QI O...9th and 10th transistors.

Claims

[Scope of utility model registration request]

A permanent magnet type DC motor provided for driving each of the two capstans, an input terminal for a drive command signal of each of the two motors that is alternately inputted, and a drive current for each of the two motors by the two signals. In the magnetic tape running device, the magnetic tape running device is provided with a drive semiconductor element which is supplied with a drive current, and in which forward rotation of the one motor by the drive current causes the other motor to rotate in the reverse direction for dynamic braking. - a rectifying element biased in the forward direction by forward rotation of each of the two motors, and a shorting semiconductor switch that closes when the respective signals are cut off and short-circuits each of the two motors via the rectifying element; A magnetic tape running device equipped with a series circuit.