JPS6333396U - - Google Patents
Info
- Publication number
- JPS6333396U JPS6333396U JP1986125767U JP12576786U JPS6333396U JP S6333396 U JPS6333396 U JP S6333396U JP 1986125767 U JP1986125767 U JP 1986125767U JP 12576786 U JP12576786 U JP 12576786U JP S6333396 U JPS6333396 U JP S6333396U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- shunt
- drive transistor
- transistor
- back electromotive
- 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 4
- 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ある。
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……逆起検出用抵抗、Ｏ
Ｐ２……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 force 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 back electromotive detection, O
P2... 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検出回路と、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、上記逆起検出回路か
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 drive transistor, a connection point between the DC motor and the drive transistor, a shunt resistor, and a shunt transistor. A back electromotive force detection circuit provided in series between both connection points of the connection points, a sawtooth wave or triangular wave voltage generation circuit that generates a sawtooth wave or triangular wave voltage, and a back electromotive voltage obtained from the above back electromotive force detection circuit. A DC motor constant speed control device comprising a comparator for comparing a sawtooth wave or a triangular wave voltage, and controlling the shunt transistor and the drive transistor by the switching output of the comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986125767U JPS6333396U (en) | 1986-08-20 | 1986-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986125767U JPS6333396U (en) | 1986-08-20 | 1986-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6333396U true JPS6333396U (en) | 1988-03-03 |
Family
ID=31018955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986125767U Pending JPS6333396U (en) | 1986-08-20 | 1986-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6333396U (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5076486A (en) * | 1973-11-12 | 1975-06-23 | ||
| JPS5836185A (en) * | 1981-08-27 | 1983-03-03 | Matsushita Electric Ind Co Ltd | Switching governor unit for dc motor |
| JPS58139688A (en) * | 1982-02-10 | 1983-08-19 | Mitsumi Electric Co Ltd | Speed control circuit for dc motor |
| JPS58224585A (en) * | 1982-06-24 | 1983-12-26 | Matsushita Electric Ind Co Ltd | Speed controller for dc motor |
| JPS6026489A (en) * | 1983-07-20 | 1985-02-09 | Toshiba Corp | Speed controller of dc motor |
-
1986
- 1986-08-20 JP JP1986125767U patent/JPS6333396U/ja active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5076486A (en) * | 1973-11-12 | 1975-06-23 | ||
| JPS5836185A (en) * | 1981-08-27 | 1983-03-03 | Matsushita Electric Ind Co Ltd | Switching governor unit for dc motor |
| JPS58139688A (en) * | 1982-02-10 | 1983-08-19 | Mitsumi Electric Co Ltd | Speed control circuit for dc motor |
| JPS58224585A (en) * | 1982-06-24 | 1983-12-26 | Matsushita Electric Ind Co Ltd | Speed controller for dc motor |
| JPS6026489A (en) * | 1983-07-20 | 1985-02-09 | Toshiba Corp | Speed controller of dc motor |
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