JPS6288492U - - Google Patents
Info
- Publication number
- JPS6288492U JPS6288492U JP1985180485U JP18048585U JPS6288492U JP S6288492 U JPS6288492 U JP S6288492U JP 1985180485 U JP1985180485 U JP 1985180485U JP 18048585 U JP18048585 U JP 18048585U JP S6288492 U JPS6288492 U JP S6288492U
- Authority
- JP
- Japan
- Prior art keywords
- rotation mode
- speed rotation
- voltage
- precision
- drive 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
第１図はこの考案の一実施例を示す回路図、第
２図は他の実施例を示す回路図、第３図は従来例
を示す回路図、第４図はＶＴＲにおけるリールモ
ータの速度特性を示すグラフである。
ＲＭ……リールモータ、Ｂ……電池、１１……
制御アンプ、１２……コンパレータ、Ｒ５，Ｒ６
，Ｒ９……抵抗、ＳＷ４……スイツチ（早送りで
オンとなるスイツチ）。
Fig. 1 is a circuit diagram showing one embodiment of this invention, Fig. 2 is a circuit diagram showing another embodiment, Fig. 3 is a circuit diagram showing a conventional example, and Fig. 4 is a speed characteristic of a reel motor in a VTR. This is a graph showing. RM...Reel motor, B...Battery, 11...
Control amplifier, 12...Comparator, R5, R6
, R9...Resistor, SW4...Switch (switch turned on during fast forwarding).
Claims (1)
高速回転モードでモータを運転できるとともに、
所定電圧の電源から降圧チヨツパ方式で降下した
電圧を供給し、かつ負帰還ループを有する定電圧
回路により定電圧化を行うようにしたモータ駆動
装置において、負帰還ループのループゲインを高
精度・低速回転モード時は高く、中精度・高速回
転モード時は低い値に切り替える手段を有するこ
とを特徴とするモータ駆動装置。 At least high precision, low speed rotation mode and medium precision
The motor can be operated in high-speed rotation mode, and
In a motor drive device that supplies a voltage dropped by a step-down chopper method from a power supply with a predetermined voltage, and uses a constant voltage circuit with a negative feedback loop to stabilize the voltage, the loop gain of the negative feedback loop can be adjusted with high accuracy and low speed. A motor drive device characterized by having means for switching to a high value in a rotation mode and a low value in a medium precision/high speed rotation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985180485U JPS6288492U (en) | 1985-11-21 | 1985-11-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985180485U JPS6288492U (en) | 1985-11-21 | 1985-11-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6288492U true JPS6288492U (en) | 1987-06-05 |
Family
ID=31124489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985180485U Pending JPS6288492U (en) | 1985-11-21 | 1985-11-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6288492U (en) |
-
1985
- 1985-11-21 JP JP1985180485U patent/JPS6288492U/ja active Pending
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