JPS6199222U - - Google Patents
Info
- Publication number
- JPS6199222U JPS6199222U JP18423284U JP18423284U JPS6199222U JP S6199222 U JPS6199222 U JP S6199222U JP 18423284 U JP18423284 U JP 18423284U JP 18423284 U JP18423284 U JP 18423284U JP S6199222 U JPS6199222 U JP S6199222U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- control
- power supply
- supply circuit
- output 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 4
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案の電源回路の一実施例を示した
回路図、第２図は本考案の他の実施例を示した回
路図、第３図は従来の電源回路の一例を示した回
路図、第４図は従来の電源回路の他の例を示した
回路図である。
１…制御用トランジスタ、６，１５…トランジ
スタ、１１…ツエナーダイオード、１７，２１…
ダイオード、１８，２２…コンデンサ、１９，２
０，２２…抵抗。
Fig. 1 is a circuit diagram showing one embodiment of the power supply circuit of the present invention, Fig. 2 is a circuit diagram showing another embodiment of the invention, and Fig. 3 is a circuit diagram showing an example of a conventional power supply circuit. 4 are circuit diagrams showing other examples of conventional power supply circuits. 1... Control transistor, 6, 15... Transistor, 11... Zener diode, 17, 21...
Diode, 18, 22...Capacitor, 19, 2
0,22...Resistance.
Claims (1)
用トランジスタのベースに、出力電圧をフイード
バツクすることにより常に所定の出力電圧を保持
する電源回路において、前記出力電圧が大幅に降
下した時、前記制御用トランジスタを完全にオフ
させる制御手段を前記制御用トランジスタのベー
ス回路に設けたことを特徴とする電源回路。 (2) 前記制御回路は、前記制御用トランジスタ
にベース電流を供給する第１のトランジスタと、
前記出力電圧の降下により前記第１のトランジス
タをオフする第２のトランジスタから成ることを
特徴とする実用新案登録請求の範囲第１項記載の
電源回路。[Claims for Utility Model Registration] (1) In a power supply circuit that always maintains a predetermined output voltage by feeding back an output voltage to the base of a control transistor that controls an input current and outputs it to the output side, A power supply circuit characterized in that a base circuit of the control transistor is provided with control means for completely turning off the control transistor when the voltage significantly drops. (2) The control circuit includes a first transistor that supplies a base current to the control transistor;
2. The power supply circuit according to claim 1, further comprising a second transistor that turns off the first transistor due to a drop in the output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18423284U JPS6199222U (en) | 1984-12-06 | 1984-12-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18423284U JPS6199222U (en) | 1984-12-06 | 1984-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6199222U true JPS6199222U (en) | 1986-06-25 |
Family
ID=30741717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18423284U Pending JPS6199222U (en) | 1984-12-06 | 1984-12-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6199222U (en) |
-
1984
- 1984-12-06 JP JP18423284U patent/JPS6199222U/ja active Pending
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