JPH0311398U - - Google Patents
Info
- Publication number
- JPH0311398U JPH0311398U JP7124889U JP7124889U JPH0311398U JP H0311398 U JPH0311398 U JP H0311398U JP 7124889 U JP7124889 U JP 7124889U JP 7124889 U JP7124889 U JP 7124889U JP H0311398 U JPH0311398 U JP H0311398U
- Authority
- JP
- Japan
- Prior art keywords
- transistors
- drive coils
- drive
- power
- voltage waveform
- 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
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Description
図面は本考案によるブラシレスＤＣモータの駆
動回路を示すためのもので、第１図は回路図、第
２図は波形図、第３図は他の実施例を示す回路図
、第４図は波形図である。
１，１Ａ，１Ｂ……駆動コイル、２，２Ａ，２
Ｂ……逆起電圧波形整形回路、ＴＲ１〜ＴＲ３…
…パワートランジスタ、ＴＲ４〜ＴＲ６……逆ト
ルク発生用トランジスタである。
The drawings are for showing a drive circuit for a brushless DC motor according to the present invention. Fig. 1 is a circuit diagram, Fig. 2 is a waveform diagram, Fig. 3 is a circuit diagram showing another embodiment, and Fig. 4 is a waveform. It is a diagram. 1, 1A, 1B... Drive coil, 2, 2A, 2
B...Back electromotive voltage waveform shaping circuit, TR1 to TR3...
... Power transistors, TR4 to TR6... Transistors for generating reverse torque.
Claims (1)
に各々接続された複数相用の駆動コイル１，１Ａ
，１Ｂを有し、相切換信号によつて前記各パワー
トランジスタＴＲ１〜ＴＲ３のオン・オフを切換
えることにより、前記各駆動コイル１，１Ａ，１
Ｂへの駆動電流の切換を行うようにしたブラシレ
スＤＣモータの駆動回路において、 前記各駆動コイル１，１Ａ，１Ｂの両端に接続
された逆起電圧波形整形回路２，２Ａ，２Ｂと、
前記各逆起電圧波形整形回路２，２Ａ，２Ｂに接
続された逆トルク発生用トランジスタＴＲ４〜Ｔ
Ｒ６とを備え、前記各パワートランジスタＴＲ１
〜ＴＲ３への電源オフ時に、前記各駆動コイル１
，１Ａ，１Ｂに残存する逆起電圧によつて各逆ト
ルク発生用トランジスタＴＲ４〜ＴＲ６をオンと
し、ロータのブレーキ作用を得るように構成した
ことを特徴とするブラシレスＤＣモータの駆動回
路。[Claims for utility model registration] Power transistors TR1 to TR3 for multiple phases
Drive coils 1, 1A for multiple phases each connected to
, 1B, and by switching on/off of each of the power transistors TR1 to TR3 by a phase switching signal, each of the drive coils 1, 1A, 1
In the brushless DC motor drive circuit configured to switch the drive current to B, a back electromotive voltage waveform shaping circuit 2, 2A, 2B connected to both ends of each of the drive coils 1, 1A, 1B;
Reverse torque generation transistors TR4 to T connected to each of the back electromotive voltage waveform shaping circuits 2, 2A, and 2B
R6, each of the power transistors TR1
~When the power to TR3 is turned off, each of the drive coils 1
, 1A, 1B to turn on each of the reverse torque generating transistors TR4 to TR6 to obtain a rotor braking action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7124889U JPH0311398U (en) | 1989-06-20 | 1989-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7124889U JPH0311398U (en) | 1989-06-20 | 1989-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0311398U true JPH0311398U (en) | 1991-02-04 |
Family
ID=31608108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7124889U Pending JPH0311398U (en) | 1989-06-20 | 1989-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0311398U (en) |
-
1989
- 1989-06-20 JP JP7124889U patent/JPH0311398U/ja active Pending