JPH0258828U - - Google Patents
Info
- Publication number
- JPH0258828U JPH0258828U JP13761688U JP13761688U JPH0258828U JP H0258828 U JPH0258828 U JP H0258828U JP 13761688 U JP13761688 U JP 13761688U JP 13761688 U JP13761688 U JP 13761688U JP H0258828 U JPH0258828 U JP H0258828U
- Authority
- JP
- Japan
- Prior art keywords
- memory
- power
- backup
- lithium battery
- 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
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Power Sources (AREA)
- Static Random-Access Memory (AREA)
Description
第１図は本考案によるメモリバツテリバツクア
ツプ回路の一実施例を示す回路図である。
１…メモリ、ＳＷ１…バツクアツプ切替スイツ
チ、ＶＤＤ…電源、ＴＲ１…トランジスタ、ＢＴ
１…リチウム電池、Ｒ１…電流制限抵抗、Ｄ１…
ダイオード、Ｃ１…電気二重層コンデンサ。
FIG. 1 is a circuit diagram showing an embodiment of a memory battery backup circuit according to the present invention. 1...Memory, SW1...Backup selector switch, VDD...Power supply, TR1...Transistor, BT
1...Lithium battery, R1...Current limiting resistor, D1...
Diode, C1...electric double layer capacitor.
Claims (1)
と大容量電気二重層コンデンサとを具備し、かつ
、前記メモリの通常の電源電圧は前記リチウム電
池電圧より大きくし、電源断になつたとき、バツ
クアツプ開始から装置内温度が周囲温度に同化す
るまでは前記電気二重層コンデンサで給電し、同
化後は前記リチウム電池により給電するように構
成したことを特徴とするメモリバツテリバツクア
ツプ回路。 A lithium battery and a large-capacity electric double-layer capacitor are provided as a backup power source for the memory, and the normal power supply voltage of the memory is set higher than the lithium battery voltage, so that when the power is cut off, the internal temperature of the device is maintained from the start of backup. A memory battery backup circuit characterized in that the memory battery backup circuit is configured such that power is supplied by the electric double layer capacitor until the temperature is assimilated to the ambient temperature, and power is supplied by the lithium battery after the assimilation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13761688U JPH0258828U (en) | 1988-10-21 | 1988-10-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13761688U JPH0258828U (en) | 1988-10-21 | 1988-10-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0258828U true JPH0258828U (en) | 1990-04-27 |
Family
ID=31399200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13761688U Pending JPH0258828U (en) | 1988-10-21 | 1988-10-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0258828U (en) |
-
1988
- 1988-10-21 JP JP13761688U patent/JPH0258828U/ja active Pending
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