JPS6353115U - - Google Patents
Info
- Publication number
- JPS6353115U JPS6353115U JP1986145288U JP14528886U JPS6353115U JP S6353115 U JPS6353115 U JP S6353115U JP 1986145288 U JP1986145288 U JP 1986145288U JP 14528886 U JP14528886 U JP 14528886U JP S6353115 U JPS6353115 U JP S6353115U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- resistor
- load
- connection point
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Description
第１図はこの考案回路の一実施例の回路図、第
２図及び第３図は従来回路の一例の回路図である
。
２１は電源端子、２２は電流検出用の第１の抵
抗、２３は可変インピーダンス素子としてのトラ
ンジスタ、２４は負荷の接続される端子、２６，
２７，２８は第２、第３、第４の抵抗、２９は制
御用トランジスタ、３０はダイオード接続された
トランジスタである。
FIG. 1 is a circuit diagram of an embodiment of this invented circuit, and FIGS. 2 and 3 are circuit diagrams of examples of conventional circuits. 21 is a power supply terminal, 22 is a first resistor for current detection, 23 is a transistor as a variable impedance element, 24 is a terminal to which a load is connected, 26,
27 and 28 are second, third, and fourth resistors, 29 is a control transistor, and 30 is a diode-connected transistor.
Claims (1)
と可変インピーダンス素子としての第１のトラン
ジスタとの直列回路を介して負荷が接続される端
子に接続され、 (b) 上記第１の抵抗と第１のトランジスタとの
接続点が第２、第３、第４の直列抵抗を介して接
地され、 (c) 上記電源端子と上記第１のトランジスタの
ベースとの間に第２のトランジスタのコレクター
エミツタ間が接続され、 (d) 上記第２の抵抗と第３の抵抗との接続点が
上記第２のトランジスタのベースに接続され、 (e) 上記第２、第３の直列抵抗に並列に、ダイ
オード接続された第３のトランジスタが接続され
、 (f) この第２のトランジスタがオンとなるとき
上記第１のトランジスタのベース電圧が制御され
て上記負荷に供給される電流が制限されるように
なされた電流制限回路。[Claims for Utility Model Registration] (a) A power supply terminal from which a DC voltage can be obtained is connected to a terminal to which a load is connected via a series circuit of a first resistor and a first transistor as a variable impedance element, (b) a connection point between the first resistor and the first transistor is grounded via second, third, and fourth series resistors; (c) a connection point between the power supply terminal and the base of the first transistor; (d) the connection point between the second resistor and the third resistor is connected to the base of the second transistor; (e) the collector-emitter of the second transistor is connected between 2. A third diode-connected transistor is connected in parallel to the third series resistor, and (f) when this second transistor is turned on, the base voltage of the first transistor is controlled and the load is applied to the load. A current limiting circuit designed to limit the current supplied to the circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986145288U JPH0534028Y2 (en) | 1986-09-22 | 1986-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986145288U JPH0534028Y2 (en) | 1986-09-22 | 1986-09-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6353115U true JPS6353115U (en) | 1988-04-09 |
| JPH0534028Y2 JPH0534028Y2 (en) | 1993-08-30 |
Family
ID=31056689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986145288U Expired - Lifetime JPH0534028Y2 (en) | 1986-09-22 | 1986-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0534028Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006128851A (en) * | 2004-10-27 | 2006-05-18 | Konica Minolta Photo Imaging Inc | Current limiting circuit, driving apparatus, imaging apparatus |
-
1986
- 1986-09-22 JP JP1986145288U patent/JPH0534028Y2/ja not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006128851A (en) * | 2004-10-27 | 2006-05-18 | Konica Minolta Photo Imaging Inc | Current limiting circuit, driving apparatus, imaging apparatus |
| JP4655584B2 (en) * | 2004-10-27 | 2011-03-23 | コニカミノルタオプト株式会社 | Current limiting circuit, driving device, imaging device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0534028Y2 (en) | 1993-08-30 |
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