JPS64125U - - Google Patents
Info
- Publication number
- JPS64125U JPS64125U JP9498587U JP9498587U JPS64125U JP S64125 U JPS64125 U JP S64125U JP 9498587 U JP9498587 U JP 9498587U JP 9498587 U JP9498587 U JP 9498587U JP S64125 U JPS64125 U JP S64125U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- semiconductor memory
- voltage drop
- line
- power supply
- 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
- 239000004065 semiconductor Substances 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Static Random-Access Memory (AREA)
- Power Sources (AREA)
Description
第１図は、本考案の一実施例の構成を示す回路
図である。
１０……半導体メモリ用ＤＣ電源装置、１４…
…ＡＣライン、１６……整流ブリツジ、２２……
３端子レギユレータ、２６……バツテリ、４２…
…半導体メモリ、４６……主ＤＣ電源装置、５０
……分圧抵抗回路、５２……インバータ、５４…
…第１発振回路、８０……第２発振回路、６６…
…単安定マルチバイブレータ、９０……圧電ブザ
ー（発音警報手段）。
FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention. 10... DC power supply device for semiconductor memory, 14...
...AC line, 16... Rectifier bridge, 22...
3-terminal regulator, 26...battery, 42...
...Semiconductor memory, 46...Main DC power supply, 50
...Voltage dividing resistor circuit, 52... Inverter, 54...
...First oscillation circuit, 80... Second oscillation circuit, 66...
...monostable multivibrator, 90...piezoelectric buzzer (sound alarm means).
Claims (1)
れているＤＣ電圧が低下すると、該半導体メモリ
にＤＣ電圧を供給してそれをバツクアツプする半
導体メモリ用ＤＣ電源装置であつて、 前記ＤＣ電圧の供給するためのバツテリと、 前記主ＤＣ電源装置と共通のＡＣラインから供
給されるＡＣ電圧をＤＣ電圧に変換して前記バツ
テリを充電する充電回路と、 前記ＡＣラインの電圧低下を検出する電圧低下
検出手段と、 該電圧低下検出手段により前記ＡＣラインの電
圧低下が検出されたときに、発音警報手段を作動
させる警報駆動回路と を含むことを特徴とする半導体メモリ用ＤＣ電
源装置。[Claims for Utility Model Registration] A DC power supply device for semiconductor memory that supplies DC voltage to the semiconductor memory and backs it up when the DC voltage constantly supplied to the semiconductor memory from the main DC power supply device drops. , a battery for supplying the DC voltage; a charging circuit that converts an AC voltage supplied from an AC line common to the main DC power supply into a DC voltage to charge the battery; and a voltage drop in the AC line. A DC power source for a semiconductor memory, comprising: voltage drop detection means for detecting a voltage drop in the AC line; and an alarm drive circuit that operates a sounding alarm means when a voltage drop in the AC line is detected by the voltage drop detection means. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9498587U JPS64125U (en) | 1987-06-19 | 1987-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9498587U JPS64125U (en) | 1987-06-19 | 1987-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS64125U true JPS64125U (en) | 1989-01-05 |
Family
ID=30958998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9498587U Pending JPS64125U (en) | 1987-06-19 | 1987-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS64125U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5434507U (en) * | 1977-08-11 | 1979-03-07 | ||
| JPS61623B2 (en) * | 1976-06-07 | 1986-01-09 | Fujitsu Ltd |
-
1987
- 1987-06-19 JP JP9498587U patent/JPS64125U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61623B2 (en) * | 1976-06-07 | 1986-01-09 | Fujitsu Ltd | |
| JPS5434507U (en) * | 1977-08-11 | 1979-03-07 |
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