JPS5854714U - constant voltage circuit - Google Patents
constant voltage circuitInfo
- Publication number
- JPS5854714U JPS5854714U JP15002481U JP15002481U JPS5854714U JP S5854714 U JPS5854714 U JP S5854714U JP 15002481 U JP15002481 U JP 15002481U JP 15002481 U JP15002481 U JP 15002481U JP S5854714 U JPS5854714 U JP S5854714U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- constant voltage
- base
- voltage circuit
- input terminal
- 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
- Continuous-Control Power Sources That Use Transistors (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図は従来の定電圧回路を示す分布抵抗を考慮した回
路図、第２図は第１図の定電圧回路の負荷短絡時の状態
を示す回路図、第３図は本考案の１実施例に係る定電圧
回路を示す回路図、第４図は第３図の実施例における負
荷短絡時の状態を示す回路図、そして第５図および第６
図はそれぞれ本考案の他の実施例を示す回路図である。
１、 ２． ３・・・・・・トランジスタ、４．１３・
・・・・・ツェナダイオード、５，６．１４・・・・・
・ダイオード、 −７・・・・・・コンデンサ、８．１
０．１２・・・・・・抵抗。
第３図
−筬へＭFigure 1 is a circuit diagram of a conventional constant voltage circuit that takes into account distributed resistance, Figure 2 is a circuit diagram of the constant voltage circuit of Figure 1 when the load is short-circuited, and Figure 3 is an implementation of the present invention. 4 is a circuit diagram showing the constant voltage circuit according to the example, FIG. 4 is a circuit diagram showing the state at the time of load short circuit in the embodiment of FIG. 3, and FIGS.
The figures are circuit diagrams showing other embodiments of the present invention. 1, 2. 3...Transistor, 4.13.
...Zena diode, 5,6.14...
・Diode, -7...Capacitor, 8.1
0.12...Resistance. Figure 3 - M to the reed
Claims (1)
圧を制御する第１のトランジスタと、この第１のトラン
ジスタのベース電流を制御する第２のトランジスタと、
この第２のトランジスタのペニス電流を制御する第３の
トランジスタと、この第３のトランジスタのベースと出
力との間に接続されたツェナダイオードと、前記第２の
トランジスタのベースと出力との間に接続され負荷短絡
時にこの第２のトランジスタのベース電流をシャントし
てこの第２のトランジスタおよび前記第１のトランジス
タをオフさせるダイオードとを具備する定電圧回路にお
いて、前記負荷短絡時における前記第１のトランジスタ
のコレクタ電流を制御する手段を有する−ことを特徴と
する定電圧回路。 ２ 前記第１のトランジスタのコレクタ電流を制限する
手段が、この第１のトランジスタのエミッタと前記入力
端子との間に挿入された抵抗と、前記第２のトランジス
タのコレクタとこの入力、端子との間の電圧を分圧して
前記第１のトランジスタのベースに付与する分圧手段と
からなる前記実用新案登録請求の範囲第１項記載の定電
圧回路。 ３ 前記分圧手段が抵抗からなる前記実用新案登録請求
の範囲第２項記載の定電圧回路。 ４ 前記分圧手段が前記入力端子と前記第１のト
□ランジスタのベースとの間に接続されたツェナ −
ｍ−ダイオードを含む前記実用新案登録請求の範囲−第
２項記載の定電圧回路。 ５ 前記分圧手段が前記入力端子と前記第１のトランジ
スタのベースとの間に接続されたダイオードと抵抗との
直列回路を含む前記実用新案登録請求の範囲第２項記載
の定電圧回路。[Claims for Utility Model Registration] 1. A first transistor inserted between an input terminal and a load to control the output voltage to the load, and a second transistor to control the base current of the first transistor. and,
a third transistor that controls the penis current of the second transistor; a Zener diode connected between the base and the output of the third transistor; and a Zener diode connected between the base and the output of the second transistor. A constant voltage circuit including a diode that is connected to shunt the base current of the second transistor to turn off the second transistor and the first transistor when the load is short-circuited. 1. A constant voltage circuit comprising means for controlling collector current of a transistor. 2. The means for limiting the collector current of the first transistor includes a resistor inserted between the emitter of the first transistor and the input terminal, and a resistor inserted between the collector of the second transistor and the input terminal. 2. The constant voltage circuit according to claim 1, further comprising voltage dividing means for dividing a voltage between and applying the divided voltage to the base of the first transistor. 3. The constant voltage circuit according to claim 2, wherein the voltage dividing means comprises a resistor. 4 The voltage dividing means connects the input terminal and the first
□Zener connected between base of transistor −
The constant voltage circuit according to claim 2 of the utility model registration claim, which includes an m-diode. 5. The constant voltage circuit according to claim 2, wherein the voltage dividing means includes a series circuit of a diode and a resistor connected between the input terminal and the base of the first transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15002481U JPS5854714U (en) | 1981-10-12 | 1981-10-12 | constant voltage circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15002481U JPS5854714U (en) | 1981-10-12 | 1981-10-12 | constant voltage circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5854714U true JPS5854714U (en) | 1983-04-14 |
Family
ID=29942771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15002481U Pending JPS5854714U (en) | 1981-10-12 | 1981-10-12 | constant voltage circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5854714U (en) |
-
1981
- 1981-10-12 JP JP15002481U patent/JPS5854714U/en active Pending
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