JPH0447716U - - Google Patents
Info
- Publication number
- JPH0447716U JPH0447716U JP8884290U JP8884290U JPH0447716U JP H0447716 U JPH0447716 U JP H0447716U JP 8884290 U JP8884290 U JP 8884290U JP 8884290 U JP8884290 U JP 8884290U JP H0447716 U JPH0447716 U JP H0447716U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- input
- power source
- zener diode
- voltage
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案の一実施例を示す定電圧回路の
電気回路図、第２図は従来の定電圧回路を示す電
気回路図である。
１，２……入力端子、３，７……抵抗器、４…
…トランジスタ、５……ツエナーダイオード、６
……出力端子。
FIG. 1 is an electric circuit diagram of a constant voltage circuit showing an embodiment of the present invention, and FIG. 2 is an electric circuit diagram showing a conventional constant voltage circuit. 1, 2...Input terminal, 3, 7...Resistor, 4...
...Transistor, 5...Zener diode, 6
...Output terminal.
Claims (1)
続し、同トランジスタのベースとアース間をツエ
ナーダイオードを介してツエナーダイオードのア
ノード側がアース側になるように接続し、前記ト
ランジスタのベースを抵抗器を介して前記入力直
流電源とは異なるより高い高電圧直流電源とを接
続して、同高電圧直流電源から前記抵抗器と前記
ツエナーダイオードにツエナー電流を流すことに
より前記トランジスタをバイアスして、前記トラ
ンジスタのコレクタに入力された入力直流電源の
リツプルを低減させて安定化された直流電圧を前
記トランジスタのエミツタから供給することを特
徴とする定電圧回路。 The collector of the transistor is connected to the input DC power supply, the base of the transistor is connected to the ground via a Zener diode so that the anode side of the Zener diode becomes the ground side, and the base of the transistor is connected to the ground via a resistor. By connecting a higher voltage DC power source different from the input DC power source and passing a Zener current from the same high voltage DC power source through the resistor and the Zener diode, the transistor is biased, and the collector of the transistor is biased. A constant voltage circuit characterized in that a stabilized DC voltage is supplied from the emitter of the transistor by reducing ripples in an input DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8884290U JPH0447716U (en) | 1990-08-24 | 1990-08-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8884290U JPH0447716U (en) | 1990-08-24 | 1990-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0447716U true JPH0447716U (en) | 1992-04-23 |
Family
ID=31822412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8884290U Pending JPH0447716U (en) | 1990-08-24 | 1990-08-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0447716U (en) |
-
1990
- 1990-08-24 JP JP8884290U patent/JPH0447716U/ja active Pending