JPS6281493U - - Google Patents
Info
- Publication number
- JPS6281493U JPS6281493U JP1985171985U JP17198585U JPS6281493U JP S6281493 U JPS6281493 U JP S6281493U JP 1985171985 U JP1985171985 U JP 1985171985U JP 17198585 U JP17198585 U JP 17198585U JP S6281493 U JPS6281493 U JP S6281493U
- Authority
- JP
- Japan
- Prior art keywords
- shunt
- motor
- transistor
- drive transistor
- series
- 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 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Control Of Direct Current Motors (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は同実施例をより具体的に示す回路図、第３図
及び第４図は同実施例の逆起電圧検出部を説明す
るための回路図、第５図は同実施例のタイムチヤ
ート、第６図は従来装置を示す回路図でさる。
Ｍ……直流モータ、Ｔｒ１……分流トランジス
タ、Ｔｒ２〜ＴｒＫ＋１……駆動トランジスタ、
ＲＴ……分流抵抗、ＲＡ……逆起電圧検出用抵抗
、ＲＢ……可変抵抗、ＯＰ２……比較器、Ｇ……
鋸歯状波もしくは三角波電圧発生回路。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a circuit diagram showing the embodiment in more detail, FIGS. 3 and 4 are circuit diagrams for explaining the back electromotive voltage detection section of the embodiment, and FIG. 5 is a time chart of the embodiment. FIG. 6 is a circuit diagram showing a conventional device. M...DC motor, Tr1 ...Shunt transistor, Tr2 to TrK +1 ...Drive transistor,
RT... Shunt resistance, RA... Resistance for detecting back electromotive force, RB... Variable resistor, OP2... Comparator, G...
Sawtooth wave or triangular wave voltage generation circuit.
Claims (1)
、上記直流モータ及び駆動トランジスタと並列に
設けた分流抵抗と分流トランジスタとの直列回路
と、上記直流モータと駆動トランジスタとの接続
点及び分流抵抗と分流トランジスタとの接続点の
両接続点間に直列に設けた逆起電圧検出用抵抗及
び可変抵抗からなる分圧回路と、鋸歯状波もしく
は三角波電圧を発生する鋸歯状波もしくは三角波
電圧発生回路と、上記分圧回路の分圧点から得ら
れる逆起電圧と鋸歯状波もしくは三角波電圧とを
比較する比較器とを具備し、上記比較器のスイツ
チング出力により前記分流トランジスタ及び駆動
トランジスタを制御する直流モータ定速制御装置
。 A drive transistor provided in series with the DC motor, a series circuit of a shunt resistor and a shunt transistor provided in parallel with the DC motor and the drive transistor, a connection point between the DC motor and the drive transistor, a shunt resistor, and a shunt transistor. A voltage dividing circuit consisting of a back electromotive voltage detection resistor and a variable resistor provided in series between the connection points of a constant speed DC motor, comprising a comparator for comparing a back electromotive voltage obtained from a voltage dividing point of a pressure circuit with a sawtooth wave or triangular wave voltage, and controlling the shunt transistor and the drive transistor by the switching output of the comparator. Control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985171985U JPS6281493U (en) | 1985-11-08 | 1985-11-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985171985U JPS6281493U (en) | 1985-11-08 | 1985-11-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6281493U true JPS6281493U (en) | 1987-05-25 |
Family
ID=31108118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985171985U Pending JPS6281493U (en) | 1985-11-08 | 1985-11-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6281493U (en) |
-
1985
- 1985-11-08 JP JP1985171985U patent/JPS6281493U/ja active Pending
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