JPS5836410U - DC constant voltage power supply circuit - Google Patents
DC constant voltage power supply circuitInfo
- Publication number
- JPS5836410U JPS5836410U JP12906181U JP12906181U JPS5836410U JP S5836410 U JPS5836410 U JP S5836410U JP 12906181 U JP12906181 U JP 12906181U JP 12906181 U JP12906181 U JP 12906181U JP S5836410 U JPS5836410 U JP S5836410U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- power supply
- supply circuit
- constant voltage
- voltage power
- 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図は従来の直流定電圧電源回路の一例を示す回路図
、第２図は本考案による直流定電圧電源回路の一実施例
を示す回路図、第３図は入出力電圧の特性図である。
Ｑ、、 Ｑ２・・・・・・トランジスタ、Ｑ４・・・・
・・電界効果型トランジスタ、ＺＤよ・・・・・・ツェ
ナーダイオード、Ａ・・・・・・誤差増幅器、Ｒ１−Ｒ
１・・・・・・抵抗。Fig. 1 is a circuit diagram showing an example of a conventional DC constant voltage power supply circuit, Fig. 2 is a circuit diagram showing an example of the DC constant voltage power supply circuit according to the present invention, and Fig. 3 is a characteristic diagram of input/output voltage. be. Q,, Q2...Transistor, Q4...
...Field effect transistor, ZD...Zener diode, A...Error amplifier, R1-R
1...Resistance.
Claims (1)
スタと、前記第１トランジスタのベースとアース間に接
続された第２トランジスタと、前記第１トランジスタの
出力電圧と基準電圧との差を前記第２トランジスタのベ
ースに供給することにより第１トランジスタに負帰還す
る誤差増幅器とを有し、前記誤差増幅器は零バイアスで
アクティブとなる電界効果トランジスタを少なくとも初
段に設けたことを特徴とする直流定電圧電源回路。A first transistor for current control connected in series between input and output terminals, a second transistor connected between the base of the first transistor and ground, and a difference between the output voltage of the first transistor and a reference voltage. an error amplifier that provides negative feedback to the first transistor by supplying it to the base of the second transistor, and the error amplifier is characterized in that a field effect transistor that becomes active at zero bias is provided at least in the first stage. Constant voltage power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12906181U JPS5836410U (en) | 1981-08-31 | 1981-08-31 | DC constant voltage power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12906181U JPS5836410U (en) | 1981-08-31 | 1981-08-31 | DC constant voltage power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5836410U true JPS5836410U (en) | 1983-03-09 |
Family
ID=29922739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12906181U Pending JPS5836410U (en) | 1981-08-31 | 1981-08-31 | DC constant voltage power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5836410U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53131457A (en) * | 1977-04-20 | 1978-11-16 | Matsushita Electric Ind Co Ltd | Constant voltage circuit |
-
1981
- 1981-08-31 JP JP12906181U patent/JPS5836410U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53131457A (en) * | 1977-04-20 | 1978-11-16 | Matsushita Electric Ind Co Ltd | Constant voltage circuit |
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