JPS58174941U - DC current limiter - Google Patents
DC current limiterInfo
- Publication number
- JPS58174941U JPS58174941U JP7225482U JP7225482U JPS58174941U JP S58174941 U JPS58174941 U JP S58174941U JP 7225482 U JP7225482 U JP 7225482U JP 7225482 U JP7225482 U JP 7225482U JP S58174941 U JPS58174941 U JP S58174941U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- differential amplifier
- switch
- resistor
- current limiter
- 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
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図は従来直流電流制限器を示す概略図、第２図は第
１図の過電流特性図、第３図はこの考案の一実施例を示
す概略図であり、１は直流電圧レギュレータ、２は直流
電流検出抵抗、３は電子回路、４は保護用トランジスタ
、５は過電流検出用トランジスタ、６．７は過電流検出
用分割抵抗、８は微分回路、９は差動増巾器、１０は差
動増巾゛ 器の入力バイアス抵抗、１１．１２は差動増
巾器のバイアス抵抗、１３は過電流保護用トランジスタ
、１４は過電流保護の出力抵抗、１５．１６は過電流保
護用トランジスタの駆動バイアス抵抗、１７は外部駆動
により動作するスイッチである。
なお、図中同一あるいは相当部分には同一符号を付して
示しである。Fig. 1 is a schematic diagram showing a conventional DC current limiter, Fig. 2 is an overcurrent characteristic diagram of Fig. 1, and Fig. 3 is a schematic diagram showing an embodiment of this invention. 2 is a DC current detection resistor, 3 is an electronic circuit, 4 is a protection transistor, 5 is an overcurrent detection transistor, 6.7 is a dividing resistor for overcurrent detection, 8 is a differentiation circuit, 9 is a differential amplifier, 10 is the input bias resistance of the differential amplifier, 11.12 is the bias resistance of the differential amplifier, 13 is the overcurrent protection transistor, 14 is the output resistance of the overcurrent protection, and 15.16 is the overcurrent protection. The driving bias resistor 17 of the transistor is a switch operated by an external drive. Note that the same or equivalent parts in the figures are indicated by the same reference numerals.
Claims (1)
の一端側が上記抵抗の一端側と微分回路−の入力端と差
動増巾器の入力端に電圧を供給する抵抗及び微分回路出
力により駆動できるスイッチの一端側に直接つながり、
一方、直流電流検出用抵抗器の他端側には直列に挿入し
たトランジスタのコレクタと上記差動増巾器の他端側に
接続された抵抗が交わり、上記差動増巾器の出力が上記
トランジスタのベースに接続され、上記トランジスタの
エミッタと上記スイッチの他端側に接続されたバイアス
抵抗の中点に電流制御用トランジスタのベースを接続し
、このトランジスタのエミッタが上記スイッチの他端側
に接続され、このトランジスタのコレクタが上記差動増
巾器の他端側に加算され、微分回路で上記スイッチを駆
動できるように構成したことを特徴とする直流電流制限
器。Driven by a DC current detection resistor inserted into the DC power line, one end of which supplies voltage to one end of the above resistor, the input terminal of the differential circuit, and the input terminal of the differential amplifier, and the output of the differential amplifier. Connect directly to one end of the switch that can be connected,
On the other hand, at the other end of the DC current detection resistor, the collector of the transistor inserted in series intersects with the resistor connected to the other end of the differential amplifier, so that the output of the differential amplifier is The base of the current control transistor is connected to the midpoint of the bias resistor connected to the base of the transistor, the emitter of the transistor and the other end of the switch, and the emitter of this transistor is connected to the other end of the switch. A DC current limiter characterized in that the collector of the transistor is added to the other end of the differential amplifier, and the switch is driven by a differentiating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7225482U JPS58174941U (en) | 1982-05-18 | 1982-05-18 | DC current limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7225482U JPS58174941U (en) | 1982-05-18 | 1982-05-18 | DC current limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58174941U true JPS58174941U (en) | 1983-11-22 |
Family
ID=30081825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7225482U Pending JPS58174941U (en) | 1982-05-18 | 1982-05-18 | DC current limiter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58174941U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6295432U (en) * | 1985-11-29 | 1987-06-18 |
-
1982
- 1982-05-18 JP JP7225482U patent/JPS58174941U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6295432U (en) * | 1985-11-29 | 1987-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS58174941U (en) | DC current limiter | |
| JPS6034620U (en) | Overcurrent protection circuit | |
| JPS5834414U (en) | Power amplifier current limit circuit | |
| JPS5927612U (en) | AC amplifier | |
| JPS6027515U (en) | Avalanche photodiode bias circuit | |
| JPS59138911U (en) | Power transistor base drive circuit | |
| JPS60124231U (en) | short circuit protection circuit | |
| JPS60134326U (en) | High voltage DC switching circuit | |
| JPS5994416U (en) | protection circuit | |
| JPS5816916U (en) | Muting circuit | |
| JPS58175415U (en) | sensor circuit | |
| JPS6017018U (en) | IC circuit | |
| JPS5871814U (en) | constant current power supply circuit | |
| JPS6042970U (en) | current detection circuit | |
| JPS59103536U (en) | Over-discharge prevention circuit for small DC motor drive batteries | |
| JPS5914411U (en) | Amplifier power limiting circuit | |
| JPS5953427U (en) | voltage stabilization circuit | |
| JPS6140030U (en) | variable attenuator | |
| JPS5830783U (en) | Electromagnetic pump drive device | |
| JPS60116726U (en) | electronic volume | |
| JPS6024199U (en) | Motor drive circuit | |
| JPS5893013U (en) | Output transistor current limit circuit | |
| JPS58171525U (en) | current limit circuit | |
| JPS613475U (en) | Energization checker | |
| JPS60127024U (en) | current limit circuit |