JPH0330790U - - Google Patents
Info
- Publication number
- JPH0330790U JPH0330790U JP1989090681U JP9068189U JPH0330790U JP H0330790 U JPH0330790 U JP H0330790U JP 1989090681 U JP1989090681 U JP 1989090681U JP 9068189 U JP9068189 U JP 9068189U JP H0330790 U JPH0330790 U JP H0330790U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- resistor
- reference voltage
- transistor
- current mirror
- 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 2
Landscapes
- Control Of Direct Current Motors (AREA)
Description
第１図と第２図は本考案に係る直流モータの回
転数制御装置の各実施例を示す回路図、第３図は
従来の直流モータの回転数制御装置の一具体例を
示す回路図である。
Ｍ……直流モータ、Ｑ１……分流トランジスタ
、Ｑ２，Ｑｎ……駆動トランジスタ、Ｒｔ……ト
ルク設定用抵抗、Ｖｃｃ……電源、Ａ……演算増
幅器、ＲＭ，ＲＮ……可変抵抗、Ｑ０……外付け
トランジスタ。
1 and 2 are circuit diagrams showing respective embodiments of a DC motor rotation speed control device according to the present invention, and FIG. 3 is a circuit diagram showing a specific example of a conventional DC motor rotation speed control device. be. M...DC motor, Q1 ...Shunt transistor, Q2 , Qn...Drive transistor, Rt...Torque setting resistor, Vcc...Power supply, A...Operation amplifier, RM, RN...Variable resistor, Q 0 ...External transistor.
Claims (1)
トルク設定用抵抗と分流トランジスタの直列接続
を並列接続し、上記各トランジスタにカレントミ
ラー回路を形成すると共に、直流モータとトルク
設定用抵抗の他端に電源を印加し、かつ、上記モ
ータ及び抵抗と各トランジスタとの各接続点間を
可変抵抗又は、固定抵抗と可変抵抗の直列回路で
接続し、上記可変抵抗又は固定抵抗の両端に基準
電圧源を介して演算増幅器の２入力を接続してそ
の出力を上記カレントミラー回路の制御入力に加
えてなり、直流モータの回転によつて生じる逆起
電力と基準電圧とを演算増幅器により比較、増幅
し、その出力でカレントミラー回路を制御して直
流モータの回転数を一定にする装置において、 上記基準電圧源を外付けトランジスタにて構成
し、そのベース・エミツタ間電圧を基準電圧とし
たことを特徴とする直流モータの回転数制御装置
。[Scope of claim for utility model registration] In the series connection of a DC motor and a drive transistor,
A series connection of a torque setting resistor and a shunt transistor is connected in parallel to form a current mirror circuit with each of the transistors, and a power supply is applied to the other end of the DC motor and the torque setting resistor, and the motor and resistor are connected in parallel. Connect each connection point with each transistor with a variable resistor or a series circuit of a fixed resistor and a variable resistor, and connect two inputs of an operational amplifier to both ends of the variable resistor or fixed resistor via a reference voltage source. The output is added to the control input of the current mirror circuit, the back electromotive force generated by the rotation of the DC motor is compared and amplified with a reference voltage, and the output is used to control the current mirror circuit to control the DC motor. A device for controlling the rotation speed of a DC motor, characterized in that the reference voltage source is constituted by an external transistor, and its base-emitter voltage is used as the reference voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989090681U JPH0330790U (en) | 1989-07-31 | 1989-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989090681U JPH0330790U (en) | 1989-07-31 | 1989-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0330790U true JPH0330790U (en) | 1991-03-26 |
Family
ID=31640197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989090681U Pending JPH0330790U (en) | 1989-07-31 | 1989-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0330790U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61269688A (en) * | 1985-05-23 | 1986-11-29 | Mabuchi Motor Co Ltd | Speed controller of dc motor |
| JPS6260486A (en) * | 1985-09-06 | 1987-03-17 | Rohm Co Ltd | Speed controller for dc motor |
-
1989
- 1989-07-31 JP JP1989090681U patent/JPH0330790U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61269688A (en) * | 1985-05-23 | 1986-11-29 | Mabuchi Motor Co Ltd | Speed controller of dc motor |
| JPS6260486A (en) * | 1985-09-06 | 1987-03-17 | Rohm Co Ltd | Speed controller for dc motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0330790U (en) | ||
| JPH0330789U (en) | ||
| JPS62202621U (en) | ||
| JPH01132127U (en) | ||
| JPS6440296U (en) | ||
| JPS6223278Y2 (en) | ||
| JPH0318692U (en) | ||
| JPS6365122U (en) | ||
| JPS60126811U (en) | Partial feedback shunt regulator power supply | |
| JPH0363093U (en) | ||
| JPS6246915U (en) | ||
| JPS626656Y2 (en) | ||
| JPS61146017U (en) | ||
| JPH01162798U (en) | ||
| JPS61165098U (en) | ||
| JPS63167395U (en) | ||
| JPS6420096U (en) | ||
| JPH042990U (en) | ||
| JPH0263107U (en) | ||
| JPH0439096U (en) | ||
| JPS6246916U (en) | ||
| JPS61104797U (en) | ||
| JPH0468497U (en) | ||
| JPH0159336U (en) | ||
| JPS6355563U (en) |