JPS6273334U - - Google Patents
Info
- Publication number
- JPS6273334U JPS6273334U JP16527885U JP16527885U JPS6273334U JP S6273334 U JPS6273334 U JP S6273334U JP 16527885 U JP16527885 U JP 16527885U JP 16527885 U JP16527885 U JP 16527885U JP S6273334 U JPS6273334 U JP S6273334U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- detection means
- drive current
- capstan
- detecting fluctuations
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims 2
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図はこの考案の一実施例の回路構成を示す
ブロツク図、第２図は第１図のローパスフイルタ
の出力特性を示す図、第３図は従来のキヤプスタ
ンモータのトルク変動特性を示す図である。
１１…キヤプスタンモータ、１２…ピンチロー
ラ、１３…テープ、１４…ＦＧコイル、１５…ｆ
―ｖ変換器、１６…差動増幅器、１８…キヤプス
タンモータ駆動回路、１９…電流検知回路、２０
…ＬＰＦ、２３…加算器、２７…リールモータ駆
動回路、２８…リールモータ。
Figure 1 is a block diagram showing the circuit configuration of an embodiment of this invention, Figure 2 is a diagram showing the output characteristics of the low-pass filter shown in Figure 1, and Figure 3 is a diagram showing the torque fluctuation characteristics of a conventional capstan motor. FIG. 11...capstan motor, 12...pinch roller, 13...tape, 14...FG coil, 15...f
-v converter, 16... differential amplifier, 18... capstan motor drive circuit, 19... current detection circuit, 20
...LPF, 23...Adder, 27...Reel motor drive circuit, 28...Reel motor.
Claims (1)
ータとリールを回転駆動するリールモータとを有
する磁気テープ再生装置において、上記キヤプス
タンモータの駆動電流の変動を検知する検知手段
と、この検知手段による上記変動の低周波成分を
抽出する抽出手段と、この抽出手段による抽出結
果に応じて上記磁気テープの巻取り／供給を行な
うリールモータの駆動電流を制御するリールモー
タ制御手段とを具備したことを特徴とするモータ
制御回路。 In a magnetic tape playback device having a capstan motor that rotationally drives a capstan shaft and a reel motor that rotationally drives a reel, there is provided a detection means for detecting fluctuations in the drive current of the capstan motor, and a detection means for detecting fluctuations in the drive current of the capstan motor, and a detection means for detecting fluctuations in the drive current of the capstan motor, and a detection means for detecting fluctuations in the drive current of the capstan motor, and a detection means for detecting fluctuations in the driving current of the capstan motor. and a reel motor control means for controlling a drive current of a reel motor for winding/supplying the magnetic tape in accordance with the extraction result by the extraction means. motor control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16527885U JPS6273334U (en) | 1985-10-28 | 1985-10-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16527885U JPS6273334U (en) | 1985-10-28 | 1985-10-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6273334U true JPS6273334U (en) | 1987-05-11 |
Family
ID=31095172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16527885U Pending JPS6273334U (en) | 1985-10-28 | 1985-10-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6273334U (en) |
-
1985
- 1985-10-28 JP JP16527885U patent/JPS6273334U/ja active Pending
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