JPS6241392U - - Google Patents
Info
- Publication number
- JPS6241392U JPS6241392U JP1985131204U JP13120485U JPS6241392U JP S6241392 U JPS6241392 U JP S6241392U JP 1985131204 U JP1985131204 U JP 1985131204U JP 13120485 U JP13120485 U JP 13120485U JP S6241392 U JPS6241392 U JP S6241392U
- Authority
- JP
- Japan
- Prior art keywords
- motor
- fet
- constant voltage
- negative feedback
- speed
- 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図は本考案の一実施例を示す回転速度切換
装置の回路図、第２図は従来装置の回路図である
。
２……コモン路、３……直流モータ、４……制
御回路、５……駆動トランジスタ、６……制御ト
ランジスタ、１２……発電機、１３，１８……抵
抗、１９……ＦＥＴ、２０……定電圧素子、２１
……グランド端子、２２……ゲート信号回路、２
３……速度スイツチ。
FIG. 1 is a circuit diagram of a rotation speed switching device showing an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional device. 2... Common path, 3... DC motor, 4... Control circuit, 5... Drive transistor, 6... Control transistor, 12... Generator, 13, 18... Resistor, 19... FET, 20... ...constant voltage element, 21
...Ground terminal, 22...Gate signal circuit, 2
3...Speed switch.
Claims (1)
、モータの制御トランジスタに負帰還制御して、
モータを定速回転すると共に少なくとも２個の抵
抗の切換えにより負帰還量を変え、モータの回転
速度を切換える装置において、 前記負帰還量を切換えるＦＥＴと、 このＦＥＴのソース側のモータ制御回路のコモ
ン路とＦＥＴのゲート側のグランド間に介挿され
る定電圧素子と、 速度スイツチの開閉に応じて定電圧素子の定電
圧より大きいハイ信号とその定電圧より小さいロ
ー信号をＦＥＴのゲートに付与するゲート信号回
路と、 を具備してなるモータの回転速度切換装置。[Scope of claim for utility model registration] Negative feedback control of the output of the generator according to the rotational speed of the DC motor to the control transistor of the motor,
In a device that rotates a motor at a constant speed and changes the amount of negative feedback by switching at least two resistors to switch the rotational speed of the motor, the FET that switches the amount of negative feedback and the common of the motor control circuit on the source side of this FET are provided. A constant voltage element is inserted between the circuit and the ground on the gate side of the FET, and a high signal that is higher than the constant voltage of the constant voltage element and a low signal that is lower than the constant voltage are applied to the gate of the FET according to the opening and closing of the speed switch. A motor rotation speed switching device comprising a gate signal circuit and the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985131204U JPS6241392U (en) | 1985-08-28 | 1985-08-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985131204U JPS6241392U (en) | 1985-08-28 | 1985-08-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6241392U true JPS6241392U (en) | 1987-03-12 |
Family
ID=31029432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985131204U Pending JPS6241392U (en) | 1985-08-28 | 1985-08-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6241392U (en) |
-
1985
- 1985-08-28 JP JP1985131204U patent/JPS6241392U/ja active Pending
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