JPS59103600U - Protection circuit for small DC motors - Google Patents
Protection circuit for small DC motorsInfo
- Publication number
- JPS59103600U JPS59103600U JP1982195313U JP19531382U JPS59103600U JP S59103600 U JPS59103600 U JP S59103600U JP 1982195313 U JP1982195313 U JP 1982195313U JP 19531382 U JP19531382 U JP 19531382U JP S59103600 U JPS59103600 U JP S59103600U
- Authority
- JP
- Japan
- Prior art keywords
- input terminal
- motor
- inverting input
- transistor
- voltage
- 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
Landscapes
- Protection Of Generators And Motors (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図及び第２図は本願の実施例を示す回路図である。
図中１は直流電源、２はスイッチ、３はモータ、４、
５． ９． １０は分圧用抵抗、６は可変抵抗器、７は
トランジスタ、８は差動増巾器、１１はコンパレータ、
１３はダイオード、１４は遅延用コンデンサである。1 and 2 are circuit diagrams showing an embodiment of the present application. In the figure, 1 is a DC power supply, 2 is a switch, 3 is a motor, 4,
5. 9. 10 is a voltage dividing resistor, 6 is a variable resistor, 7 is a transistor, 8 is a differential amplifier, 11 is a comparator,
13 is a diode, and 14 is a delay capacitor.
Claims (1)
と、電圧調整用の可変抵抗器とを接続し、かつ差動増巾
器の反転入力端を前記可変抵抗器の可動接点に、その非
反転入力端を分圧抵抗を介して前記モータとトランジス
タとの接続点に、かつ出力端を前記トランジスタのベー
スに夫々接続し、さらにコンパレータの反転入力端に電
源電圧を印加すると共に、その非反転入力端に遅延用コ
ンデンサと、モータの異常電流乃至異常電圧の導出部と
を接続し、かつ該コンパレータの出力端をタイオードを
介して前記差動増巾回路の反転入力端に接続したことを
特徴とする小型直流モータの保護回路。A series circuit of a motor and a transistor, and a variable resistor for voltage adjustment are connected to both ends of the current power supply, and the inverting input terminal of the differential amplifier is connected to the movable contact of the variable resistor. The inverting input terminal is connected to the connection point between the motor and the transistor via a voltage dividing resistor, and the output terminal is connected to the base of the transistor, and a power supply voltage is applied to the inverting input terminal of the comparator, and its non-inverting A delay capacitor and a derivation section for abnormal current or abnormal voltage of the motor are connected to the input terminal, and the output terminal of the comparator is connected to the inverting input terminal of the differential amplifier circuit via a diode. A protection circuit for a small DC motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982195313U JPS59103600U (en) | 1982-12-25 | 1982-12-25 | Protection circuit for small DC motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982195313U JPS59103600U (en) | 1982-12-25 | 1982-12-25 | Protection circuit for small DC motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59103600U true JPS59103600U (en) | 1984-07-12 |
Family
ID=30419532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982195313U Pending JPS59103600U (en) | 1982-12-25 | 1982-12-25 | Protection circuit for small DC motors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59103600U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5417219A (en) * | 1977-07-08 | 1979-02-08 | Fujitsu Ten Ltd | Safety device for electrically driven wheelchair |
| JPS5716592A (en) * | 1980-07-03 | 1982-01-28 | Diesel Kiki Co Ltd | Controlling device for rotating speed of dc motor |
| JPS57180388A (en) * | 1981-04-27 | 1982-11-06 | Micron Denki Kk | Blower motor control circuit for car air conditioner with safety protecting circuit |
-
1982
- 1982-12-25 JP JP1982195313U patent/JPS59103600U/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5417219A (en) * | 1977-07-08 | 1979-02-08 | Fujitsu Ten Ltd | Safety device for electrically driven wheelchair |
| JPS5716592A (en) * | 1980-07-03 | 1982-01-28 | Diesel Kiki Co Ltd | Controlling device for rotating speed of dc motor |
| JPS57180388A (en) * | 1981-04-27 | 1982-11-06 | Micron Denki Kk | Blower motor control circuit for car air conditioner with safety protecting circuit |
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