JPH0383496U - - Google Patents
Info
- Publication number
- JPH0383496U JPH0383496U JP1989144892U JP14489289U JPH0383496U JP H0383496 U JPH0383496 U JP H0383496U JP 1989144892 U JP1989144892 U JP 1989144892U JP 14489289 U JP14489289 U JP 14489289U JP H0383496 U JPH0383496 U JP H0383496U
- Authority
- JP
- Japan
- Prior art keywords
- switch
- circuit
- motor
- voltage
- voltage divider
- 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
- 239000003990 capacitor Substances 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Protection Of Generators And Motors (AREA)
- Control Of Direct Current Motors (AREA)
Description
第１図は本考案によるモータ駆動回路の一実施
例を示す回路構成図、第２図は負荷の短絡や過負
荷から回路を保護するための電流制限回路の一例
を示す図である。
１……第１のスイツチ、２……第２のスイツチ
、３……モータ、４……ゲート回路、５……分圧
回路、６……時定数回路、７……電圧比較回路。
FIG. 1 is a circuit diagram showing an embodiment of a motor drive circuit according to the present invention, and FIG. 2 is a diagram showing an example of a current limiting circuit for protecting the circuit from load short circuits and overloads. DESCRIPTION OF SYMBOLS 1...First switch, 2...Second switch, 3...Motor, 4...Gate circuit, 5...Voltage dividing circuit, 6...Time constant circuit, 7...Voltage comparison circuit.
Claims (1)
に応答してオン・オフする第１のスイツチと、該
第１のスイツチと電源端子間に接続されるモータ
と、前記第１のスイツチに同期してオン・オフす
る第２のスイツチと、該第２のスイツチを介して
前記第１のスイツチの降下電圧を分圧する分圧回
路と、該分圧回路とともに時定数回路を形成する
キヤパシタと、前記時定数回路の出力電圧と基準
電圧とを比較し、前記ゲート回路を開・閉制御す
る比較回路とを備えたことを特徴とするモータ駆
動回路。 a first switch that is turned on and off in response to a motor control signal input through a gate circuit; a motor connected between the first switch and a power terminal; and a motor that is synchronous with the first switch. a second switch that turns on and off; a voltage divider circuit that divides the voltage drop of the first switch via the second switch; a capacitor that forms a time constant circuit together with the voltage divider circuit; A motor drive circuit comprising: a comparison circuit that compares the output voltage of the constant circuit with a reference voltage and controls opening and closing of the gate circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989144892U JPH0383496U (en) | 1989-12-18 | 1989-12-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989144892U JPH0383496U (en) | 1989-12-18 | 1989-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0383496U true JPH0383496U (en) | 1991-08-26 |
Family
ID=31691565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989144892U Pending JPH0383496U (en) | 1989-12-18 | 1989-12-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0383496U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01164292A (en) * | 1987-12-18 | 1989-06-28 | Makita Electric Works Ltd | Controlling circuit with battery driving of motor-operated tool |
-
1989
- 1989-12-18 JP JP1989144892U patent/JPH0383496U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01164292A (en) * | 1987-12-18 | 1989-06-28 | Makita Electric Works Ltd | Controlling circuit with battery driving of motor-operated tool |
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