JPS5814261U

JPS5814261U - Magnetic tape traveling device

Info

Publication number: JPS5814261U
Application number: JP10815881U
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 the drawing]

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図ないし第６図はこの考案の磁気
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図は磁気ガテープを停止させるときに作用する力
の説明図、第４図は第２図のモータのトルクと回転数と
の関係図、第５、図は第４図にもとづく各トルクの説明
図、第６−は走行中のテップが停止するまでに作用する
トルクの説明図、第７図および第８図はこの考案の他の
実施例を示し、第７図は回路結線図、第８図はテープを
停止させる間に両モータそれぞれに供給される分岐電流
の説明図である。３ａ、　　３ｂ・・・キャプスタン、５ａ、　　５ｂ・
・・永久磁石式直流モータ、７・・・タイマ回路、Ｉ２
・・・電源端子、Ｉ４・・・停止指令端子、Ｄ３．　Ｄ
４・・・第３、第４ダイオード、Ｑ３．Ｑ４．Ｑ５・・
・第３ないし第５トランジスタ、Ｒ４・・・第４抵抗。FIG. 1 is a plan view of a simplified mechanical block of a conventional magnetic tape running device, FIGS. 2 to 6 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 that acts when stopping the magnetic tape, Figure 4 is a diagram of the relationship between the torque and rotational speed of the motor in Figure 2, and Figure 5 is a diagram of the relationship between the torque and rotational speed of the motor shown in Figure 4. Explanatory diagram, No. 6- is an explanatory diagram of the torque that acts until the running step stops, FIG. 7 and FIG. 8 show other embodiments of this invention, and FIG. 7 is a circuit connection diagram, and FIG. FIG. 8 is an explanatory diagram of branch currents supplied to both motors respectively while stopping the tape. 3a, 3b...capstan, 5a, 5b...
...Permanent magnet DC motor, 7...Timer circuit, I2
...power supply terminal, I4...stop command terminal, D3. D
4...Third and fourth diodes, Q3. Q4. Q5...
- Third to fifth transistors, R4... fourth resistor.

Claims

[Claims for Utility Model Registration] ■ Two permanent magnet DC motors provided to drive each of the two capstans, and a drive control semiconductor element provided between each of the two motors and a power source. and a magnetic tape running device that turns off the other semiconductor element and rotates the other motor in the reverse direction for dynamic braking when the one motor rotates forward when the one semiconductor element is turned on, the motor stopping. a stop command terminal into which a command signal is input; a stop control semiconductor switch that is turned on by the signal via the terminal and through which a power supply current from the power source flows; and an impedance element for current limiting of the current via the switch; A magnetic tape running device comprising a rectifying element provided between the element and each of the two motors, through which the current flows in a forward direction. ■ The magnetic tape running device according to claim 1, which is registered as a utility model and includes a timer circuit provided between a stop command terminal and a semiconductor switch for stop control, and which is triggered by the stop command terminal and closes the switch for a predetermined period of time. .