JPH0244847U - - Google Patents
Info
- Publication number
- JPH0244847U JPH0244847U JP12435788U JP12435788U JPH0244847U JP H0244847 U JPH0244847 U JP H0244847U JP 12435788 U JP12435788 U JP 12435788U JP 12435788 U JP12435788 U JP 12435788U JP H0244847 U JPH0244847 U JP H0244847U
- Authority
- JP
- Japan
- Prior art keywords
- operational amplifier
- power supply
- 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
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Stand-By Power Supply Arrangements (AREA)
- Control Of Voltage And Current In General (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は従来例を示す回路図である。
１……被バツクアツプ回路、４……バツクアツ
プコンデンサ、５……オペアンプ、７……ボルテ
ージフオロワ回路。
Figure 1 is a circuit diagram showing one embodiment of the present invention, Figure 2 is a circuit diagram showing an embodiment of the present invention.
The figure is a circuit diagram showing a conventional example. 1... Backup circuit, 4... Backup capacitor, 5... Operational amplifier, 7... Voltage follower circuit.
Claims (1)
備え、オペアンプの駆動電圧を供給電源の電圧よ
りも電圧に設定し、その正相入力端に供給電源を
接続する一方、オペアンプの出力端をその負相入
力端に帰還接続すると共にバツクアツプコンデン
サ及び被バツクアツプ回路に接続したことを特徴
とする電源バツクアツプ回路。 Equipped with a voltage follower circuit having an operational amplifier, the driving voltage of the operational amplifier is set to a voltage higher than the voltage of the power supply, and the power supply is connected to its positive phase input terminal, while the output terminal of the operational amplifier is connected to its negative phase input terminal. What is claimed is: 1. A power supply backup circuit characterized in that it is connected to a backup capacitor and a circuit to be backed up as well as a feedback connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12435788U JPH0244847U (en) | 1988-09-22 | 1988-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12435788U JPH0244847U (en) | 1988-09-22 | 1988-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0244847U true JPH0244847U (en) | 1990-03-28 |
Family
ID=31374014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12435788U Pending JPH0244847U (en) | 1988-09-22 | 1988-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0244847U (en) |
-
1988
- 1988-09-22 JP JP12435788U patent/JPH0244847U/ja active Pending
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