JPH0318692U - - Google Patents
Info
- Publication number
- JPH0318692U JPH0318692U JP1989076619U JP7661989U JPH0318692U JP H0318692 U JPH0318692 U JP H0318692U JP 1989076619 U JP1989076619 U JP 1989076619U JP 7661989 U JP7661989 U JP 7661989U JP H0318692 U JPH0318692 U JP H0318692U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- rotation speed
- torque setting
- setting resistor
- thermal resistance
- 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
- 238000004804 winding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Control Of Direct Current Motors (AREA)
Description
第１図及び第２図はそれぞれ本考案及び従来の
直流モータの回転数制御回路の一具体例を示す回
路図である。
１……第１の端子、２……第２の端子、３……
第３の端子、４……第４の端子、Ａ……演算増幅
器、Ｅｒ……基準電圧源、Ｑ１……分流トランジ
スタ、Ｑ２，Ｑｎ……駆動トランジスタ、Ｖｃｃ
……電源端子、Ｍ……直流モータ、Ｒｔ……トル
ク設定用抵抗、Ｒ１，Ｒ２……分圧回路、ｒｍ…
…モータ内部抵抗。
FIG. 1 and FIG. 2 are circuit diagrams showing a specific example of a rotation speed control circuit of the present invention and a conventional DC motor, respectively. 1...First terminal, 2...Second terminal, 3...
Third terminal, 4...Fourth terminal, A...Operation amplifier, Er...Reference voltage source, Q1 ...Shunt transistor, Q2 , Qn...Drive transistor, Vcc
...Power terminal, M...DC motor, Rt...torque setting resistor, R1 , R2 ...voltage divider circuit, r m ...
...Motor internal resistance.
Claims (1)
基準電圧とを演算増幅器により、比較、増幅し、
該出力でモータ駆動電流に対しトルク設定用抵抗
に流れる電流を一定の比に保つ分流回路を制御し
直流モータの回転数を一定にする直流モータの回
転数制御回路において、 上記トルク設定用抵抗の熱抵抗をモータ巻線の
熱抵抗に対し、トルク設定用抵抗に流れる電流に
対するモータ駆動電流の比倍に設定したことを特
徴とする直流モータの回転数制御回路。[Scope of claim for utility model registration] Back electromotive force generated by the rotation of a DC motor,
Compare and amplify the reference voltage with an operational amplifier,
In a DC motor rotation speed control circuit that uses this output to control a shunt circuit that maintains a constant ratio of the current flowing through the torque setting resistor to the motor drive current to keep the rotation speed of the DC motor constant, the torque setting resistor A rotation speed control circuit for a DC motor, characterized in that the thermal resistance is set to the ratio of the motor drive current to the current flowing through the torque setting resistor to the thermal resistance of the motor windings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989076619U JPH0318692U (en) | 1989-06-28 | 1989-06-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989076619U JPH0318692U (en) | 1989-06-28 | 1989-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0318692U true JPH0318692U (en) | 1991-02-25 |
Family
ID=31618253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989076619U Pending JPH0318692U (en) | 1989-06-28 | 1989-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0318692U (en) |
-
1989
- 1989-06-28 JP JP1989076619U patent/JPH0318692U/ja active Pending
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