JPS6384629U - - Google Patents
Info
- Publication number
- JPS6384629U JPS6384629U JP17885286U JP17885286U JPS6384629U JP S6384629 U JPS6384629 U JP S6384629U JP 17885286 U JP17885286 U JP 17885286U JP 17885286 U JP17885286 U JP 17885286U JP S6384629 U JPS6384629 U JP S6384629U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- memory
- capacitor
- main power
- battery
- 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 6
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Power Sources (AREA)
Description
第１図は本考案におけるメモリバツクアツプ回
路の一実施例を示す回路図である。
図中、１１は電池、１５はメモリ、Ｐ，Ｎは電
源供給端子、Ｖは主電源、Ｃ１は第１コンデンサ
、Ｃ２は第２コンデンサである。
FIG. 1 is a circuit diagram showing an embodiment of a memory backup circuit according to the present invention. In the figure, 11 is a battery, 15 is a memory, P and N are power supply terminals, V is a main power supply, C1 is a first capacitor, and C2 is a second capacitor.
Claims (1)
を直流化してなる主電源と、 メモリの電源供給端子間に主電源と並列に接続
されたバツクアツプ用の電池と、 前記電池と並列に接続され、電池交換時にメモ
リをバツクアツプする大容量の第１コンデンサと
からなるメモリバツクアツプ回路において、 前記主電源と前記電源供給端子との間に、前記
第１コンデンサに対して小容量の第２コンデンサ
を前記主電源と並列に接続したことを特徴とする
メモリバツクアツプ回路。 ２ 前記バツクアツプ用の電池には主電源からの
電流の流入を防止するダイオードが直列に接続さ
れていることを特徴とする実用新案登録請求の範
囲第１項記載のメモリバツクアツプ回路。[Scope of Claim for Utility Model Registration] 1. A memory, a main power supply made by converting a commercial power supply into direct current that is connected between the memory's power supply terminals, and a backup power supply that is connected in parallel with the main power supply between the memory's power supply terminals. and a large-capacity first capacitor that is connected in parallel with the battery and backs up the memory when replacing the battery, wherein the first capacitor is connected between the main power source and the power supply terminal. A memory backup circuit characterized in that a second capacitor having a smaller capacity than the capacitor is connected in parallel with the main power supply. 2. The memory backup circuit according to claim 1, wherein the backup battery has a diode connected in series to prevent current from flowing from the main power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17885286U JPS6384629U (en) | 1986-11-20 | 1986-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17885286U JPS6384629U (en) | 1986-11-20 | 1986-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6384629U true JPS6384629U (en) | 1988-06-03 |
Family
ID=31121372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17885286U Pending JPS6384629U (en) | 1986-11-20 | 1986-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6384629U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57142149A (en) * | 1981-02-25 | 1982-09-02 | Sharp Kk | Circuit for protecting electronic device with solar battery |
| JPS6125051B2 (en) * | 1980-07-01 | 1986-06-13 | Matsushita Electric Ind Co Ltd |
-
1986
- 1986-11-20 JP JP17885286U patent/JPS6384629U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6125051B2 (en) * | 1980-07-01 | 1986-06-13 | Matsushita Electric Ind Co Ltd | |
| JPS57142149A (en) * | 1981-02-25 | 1982-09-02 | Sharp Kk | Circuit for protecting electronic device with solar battery |
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