JPH0393923U - - Google Patents
Info
- Publication number
- JPH0393923U JPH0393923U JP172490U JP172490U JPH0393923U JP H0393923 U JPH0393923 U JP H0393923U JP 172490 U JP172490 U JP 172490U JP 172490 U JP172490 U JP 172490U JP H0393923 U JPH0393923 U JP H0393923U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- transistor
- power supply
- stabilized power
- output circuit
- 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
- 230000003321 amplification Effects 0.000 claims description 4
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案の第１の実施例の安定化電源回
路を示す回路図、第２図は本考案の第２の実施例
の安定化電源回路を示す回路図、第３図は従来の
安定化電源回路用ＩＣを示す回路である。
１，４，５，６……スタートアツプ回路部抵抗
、２……スタートアツプ回路部ツエナーダイオー
ド、３，７……スタートアツプ回路部トランジス
タ、８……過熱保護回路、９，１０……定電流回
路部抵抗、１１，１２……定電流回路部トランジ
スタ、１３，１４，１６，１７，２２……基準電
圧回路部トランジスタ、１５，１８，１９，２０
，２１……基準電圧回路部抵抗、２３……誤差増
幅回路部コンデンサ、２４，２５……誤動増幅回
路部トランジスタ、４７……誤差増幅回路部抵抗
、２８……ＳＯＡ制限回路部ダイオード、２９…
…ＳＯＡ制限回路部抵抗、３０，３１……出力回
路部トランジスタ、３３，３４，３５，３６……
電流制限回路部抵抗、３２……電流制限回路部ト
ランジスタ、２６，２７……出力電圧設定用抵抗
、３７……ＩＮＰＵＴ端子、３８……ＯＵＴＰＵ
Ｔ端子、３９……ＯＮ／ＯＦＦ端子、４０……Ｇ
ＮＤ端子、４１……ＯＮ／ＯＦＦ用のＰＮＰトラ
ンジスタ、４３，４５……ＯＮ／ＯＦＦ回路部Ｎ
ＰＮトランジスタ、４２，４４，４６，４８，４
９……ＯＮ／ＯＦＦ回路部抵抗。
Fig. 1 is a circuit diagram showing a stabilized power supply circuit according to the first embodiment of the present invention, Fig. 2 is a circuit diagram showing a stabilized power supply circuit according to the second embodiment of the present invention, and Fig. 3 is a circuit diagram showing a stabilized power supply circuit according to the second embodiment of the present invention. This is a circuit showing an IC for a stabilized power supply circuit. 1, 4, 5, 6... Start-up circuit resistance, 2... Start-up circuit Zener diode, 3, 7... Start-up circuit transistor, 8... Overheat protection circuit, 9, 10... Constant current Circuit part resistance, 11, 12... Constant current circuit part transistor, 13, 14, 16, 17, 22... Reference voltage circuit part transistor, 15, 18, 19, 20
, 21...Reference voltage circuit part resistance, 23...Error amplification circuit part capacitor, 24, 25...Error amplification circuit part transistor, 47...Error amplification circuit part resistance, 28...SOA limiting circuit part diode, 29 …
...SOA limiting circuit section resistance, 30, 31... Output circuit section transistor, 33, 34, 35, 36...
Current limiting circuit section resistor, 32... Current limiting circuit section transistor, 26, 27... Output voltage setting resistor, 37... INPUT terminal, 38... OUTPU
T terminal, 39...ON/OFF terminal, 40...G
ND terminal, 41...PNP transistor for ON/OFF, 43, 45...ON/OFF circuit section N
PN transistor, 42, 44, 46, 48, 4
9...ON/OFF circuit resistance.
Claims (1)
と、出力回路とを備えた安定化電源回路において
、前記出力回路の電源ラインと、前記出力回路を
除く他の回路の電源ラインとの間にコレクタとエ
ミツタを接続した第１のトランジスタと、前記第
１のトランジスタのベースを駆動する第２のトラ
ンジスタと、前記第２のトランジスタのベースに
接続された外部電圧印加端子とを備えていること
を特徴とする安定化電源回路。 In a stabilized power supply circuit comprising a constant current circuit, a reference voltage circuit, an error amplification circuit, and an output circuit, between the power supply line of the output circuit and the power supply line of other circuits other than the output circuit. A first transistor having a collector and an emitter connected, a second transistor driving the base of the first transistor, and an external voltage application terminal connected to the base of the second transistor. Features a stabilized power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP172490U JPH0393923U (en) | 1990-01-12 | 1990-01-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP172490U JPH0393923U (en) | 1990-01-12 | 1990-01-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0393923U true JPH0393923U (en) | 1991-09-25 |
Family
ID=31505618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP172490U Pending JPH0393923U (en) | 1990-01-12 | 1990-01-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0393923U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006305208A (en) * | 2005-05-02 | 2006-11-09 | Nippon Sigmax Kk | Ankle supporter |
| JP2014142679A (en) * | 2013-01-22 | 2014-08-07 | Fujitsu Telecom Networks Ltd | Overcurrent protection circuit and charger including the same |
-
1990
- 1990-01-12 JP JP172490U patent/JPH0393923U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006305208A (en) * | 2005-05-02 | 2006-11-09 | Nippon Sigmax Kk | Ankle supporter |
| JP2014142679A (en) * | 2013-01-22 | 2014-08-07 | Fujitsu Telecom Networks Ltd | Overcurrent protection circuit and charger including the same |
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