JPH0363230U - - Google Patents
Info
- Publication number
- JPH0363230U JPH0363230U JP12427389U JP12427389U JPH0363230U JP H0363230 U JPH0363230 U JP H0363230U JP 12427389 U JP12427389 U JP 12427389U JP 12427389 U JP12427389 U JP 12427389U JP H0363230 U JPH0363230 U JP H0363230U
- Authority
- JP
- Japan
- Prior art keywords
- backup
- voltage
- power supply
- operating level
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Power Sources (AREA)
- Stand-By Power Supply Arrangements (AREA)
Description
第１図は本考案に係る電源回路の一実施例を示
す回路図、第２図は第１図の電源回路の動作を説
明するための波形図、第３図は従来の電源回路を
示す回路図。
１……電源、２……トランジスタ、４……論理
回路、６……デバイス、７……スーパーコンデン
サ、８……比較回路、９……基準電源。
Fig. 1 is a circuit diagram showing an embodiment of the power supply circuit according to the present invention, Fig. 2 is a waveform diagram for explaining the operation of the power supply circuit shown in Fig. 1, and Fig. 3 is a circuit diagram showing a conventional power supply circuit. figure. 1... Power supply, 2... Transistor, 4... Logic circuit, 6... Device, 7... Super capacitor, 8... Comparison circuit, 9... Reference power supply.
Claims (1)
ツプを要する素子にのみ電流を供給するバツクア
ツプ機能付電源回路において、 上記素子の最低動作レベルの電圧を生成する基
準電圧生成手段と、 この基準電圧生成手段により生成される最低動
作レベルの電圧と、電源復帰後におけるバツクア
ツプ手段の電圧との比較により、バツクアツプ手
段の電圧が最低動作レベルを越えるのを検知する
比較手段と、 この比較手段による検知出力に応じて電源とバ
ツクアツプが不要な回路とを接続する接続手段と
を有することを特徴とするバツクアツプ機能付電
源回路。[Scope of Claim for Utility Model Registration] In a power supply circuit with a backup function that supplies current from backup means only to elements that require backup during a power cut-off period, reference voltage generation means for generating a voltage at the lowest operating level of said element; Comparing means for detecting that the voltage of the backup means exceeds the minimum operating level by comparing the lowest operating level voltage generated by the reference voltage generating means and the voltage of the backup means after power is restored; A power supply circuit with a backup function, comprising a connection means for connecting a power supply and a circuit that does not require backup according to a detection output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12427389U JPH0749547Y2 (en) | 1989-10-23 | 1989-10-23 | Power supply circuit with backup function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12427389U JPH0749547Y2 (en) | 1989-10-23 | 1989-10-23 | Power supply circuit with backup function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0363230U true JPH0363230U (en) | 1991-06-20 |
| JPH0749547Y2 JPH0749547Y2 (en) | 1995-11-13 |
Family
ID=31672205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12427389U Expired - Lifetime JPH0749547Y2 (en) | 1989-10-23 | 1989-10-23 | Power supply circuit with backup function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0749547Y2 (en) |
-
1989
- 1989-10-23 JP JP12427389U patent/JPH0749547Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0749547Y2 (en) | 1995-11-13 |