JPH039018U - - Google Patents
Info
- Publication number
- JPH039018U JPH039018U JP6999189U JP6999189U JPH039018U JP H039018 U JPH039018 U JP H039018U JP 6999189 U JP6999189 U JP 6999189U JP 6999189 U JP6999189 U JP 6999189U JP H039018 U JPH039018 U JP H039018U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- power supply
- constant
- supplies
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
本考案の他の一実施例の回路図、第３図は従来の
一例の回路図である。
１……定電圧回路、２……電圧検出回路、３…
…ｎｐｎトランジスタ、４……ツエナーダイオー
ド、７，８……電圧検出端子、９……出力端子。
FIG. 1 is a circuit diagram of one embodiment of the present invention, FIG. 2 is a circuit diagram of another embodiment of the present invention, and FIG. 3 is a circuit diagram of a conventional example. 1... Constant voltage circuit, 2... Voltage detection circuit, 3...
... npn transistor, 4 ... Zener diode, 7, 8 ... voltage detection terminal, 9 ... output terminal.
Claims (1)
と共に該電源電圧に応じた電圧を該電源電圧の投
入・切断を検出する電圧検出回路に供給する電源
回路において、 前記電源電圧をツエナーダイオードを用いて定
電圧化する定電圧回路と、 前記定電圧回路の定電圧となる部分と接続され
、該定電圧となる部分に生じる電圧を分圧し、前
記電圧検出回路に供給する分圧回路とを具備して
なる電源回路。[Claims for Utility Model Registration] In a power supply circuit that obtains a constant output voltage regardless of fluctuations in the power supply voltage and supplies a voltage corresponding to the power supply voltage to a voltage detection circuit that detects whether the power supply voltage is turned on or off, a constant voltage circuit that makes the power supply voltage constant using a Zener diode; and a constant voltage circuit that is connected to a constant voltage section of the constant voltage circuit, divides the voltage generated at the constant voltage section, and supplies the voltage to the voltage detection circuit. A power supply circuit comprising a supply voltage dividing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6999189U JPH039018U (en) | 1989-06-15 | 1989-06-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6999189U JPH039018U (en) | 1989-06-15 | 1989-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH039018U true JPH039018U (en) | 1991-01-29 |
Family
ID=31605771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6999189U Pending JPH039018U (en) | 1989-06-15 | 1989-06-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH039018U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013025696A (en) * | 2011-07-25 | 2013-02-04 | Asahi Kasei Electronics Co Ltd | Multi-input power supply circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6242217A (en) * | 1985-08-19 | 1987-02-24 | Sharp Corp | Resetting circuit |
-
1989
- 1989-06-15 JP JP6999189U patent/JPH039018U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6242217A (en) * | 1985-08-19 | 1987-02-24 | Sharp Corp | Resetting circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013025696A (en) * | 2011-07-25 | 2013-02-04 | Asahi Kasei Electronics Co Ltd | Multi-input power supply circuit |