JPH0182628U - - Google Patents
Info
- Publication number
- JPH0182628U JPH0182628U JP1987176109U JP17610987U JPH0182628U JP H0182628 U JPH0182628 U JP H0182628U JP 1987176109 U JP1987176109 U JP 1987176109U JP 17610987 U JP17610987 U JP 17610987U JP H0182628 U JPH0182628 U JP H0182628U
- Authority
- JP
- Japan
- Prior art keywords
- current
- circuit
- current limiting
- load
- base
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の一実施例の電流制限回路の回
路図、第２図は第１図に示す実施例回路の作動説
明図、第３図は従来の電流制限回路の一例の回路
図、第４図は第３図に示す従来回路の作動の説明
図である。
符号の説明、１……電流制限回路、Ｑ１……過
電流検知用トランジスタ、Ｑ２……電流分岐用ト
ランジスタ、Ｑ３……電流制限用トランジスタ、
Ｒ１……電流検出用抵抗、Ｒ５……電流制限用ト
ランジスタのベース回路の抵抗、ｉ３……負荷電
流。
FIG. 1 is a circuit diagram of a current limiting circuit according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of the operation of the embodiment circuit shown in FIG. 1, and FIG. 3 is a circuit diagram of an example of a conventional current limiting circuit. FIG. 4 is an explanatory diagram of the operation of the conventional circuit shown in FIG. 3. Explanation of symbols, 1...Current limiting circuit, Q1 ...Transistor for overcurrent detection, Q2 ...Transistor for current branching, Q3 ...Transistor for current limiting,
R1 ...Resistance for current detection, R5 ...Resistance of the base circuit of the current limiting transistor, i3 ...Load current.
Claims (1)
のベース回路の電流を分岐回路に分流することに
よりベース電流を制限して負荷電流を制限する方
式の電流制限回路において、負荷と直列に接続し
た電流検出用抵抗と電流制限用トランジスタのベ
ース回路の抵抗の両方の電圧を検出して分岐回路
を作動させることを特徴とする電流制限回路。 For current detection connected in series with the load in a current limiting circuit that limits the load current by dividing the base circuit current of the current limiting transistor connected in series with the load into a branch circuit to limit the base current. A current limiting circuit characterized in that a branch circuit is operated by detecting voltages of both a resistor and a resistor of a base circuit of a current limiting transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176109U JPH0182628U (en) | 1987-11-18 | 1987-11-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176109U JPH0182628U (en) | 1987-11-18 | 1987-11-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0182628U true JPH0182628U (en) | 1989-06-01 |
Family
ID=31467869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987176109U Pending JPH0182628U (en) | 1987-11-18 | 1987-11-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0182628U (en) |
-
1987
- 1987-11-18 JP JP1987176109U patent/JPH0182628U/ja active Pending