JPS6155725U - - Google Patents
Info
- Publication number
- JPS6155725U JPS6155725U JP14182384U JP14182384U JPS6155725U JP S6155725 U JPS6155725 U JP S6155725U JP 14182384 U JP14182384 U JP 14182384U JP 14182384 U JP14182384 U JP 14182384U JP S6155725 U JPS6155725 U JP S6155725U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- application
- memory
- cuts
- 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
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910005580 NiCd Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
Landscapes
- Power Sources (AREA)
- Static Random-Access Memory (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Description
第１図はこの考案の一実施例の回路構成を示す
図であり、第２図は従来例の回路構成を示す図で
ある。
１１，２１…ニツケルカドミウム(NiCd)電池、
１２，２２…充電ジヤツク、１２１，１２２，２
２１，２２２…充電ジヤツク端子、１３，２５…
コンデンサ、１４，２７…トランジスタ、１５，
２６，２９…ダイオード、１６，２８…バツクア
ツプ用電池、２３…抵抗、２４…ツエナーダイオ
ード。
FIG. 1 is a diagram showing the circuit configuration of an embodiment of this invention, and FIG. 2 is a diagram showing the circuit configuration of a conventional example. 11,21...Nickel cadmium (NiCd) battery,
12, 22...Charging jack, 121, 122, 2
21, 222...charging jack terminal, 13, 25...
Capacitor, 14, 27... Transistor, 15,
26, 29... Diode, 16, 28... Backup battery, 23... Resistor, 24... Zener diode.
Claims (1)
二次電池を用いる回路において、上記二次電池充
電時に回路動作用の電圧の印加を遮断する遮断回
路と、少なくとも上記電圧印加遮断時に、充電電
圧を定電圧に分圧し、この電圧を上記メモリに対
し、バツクアツプ電圧として印加する定電圧印加
回路とを具備したことを特徴とするメモリバツク
アツプ回路。 In a circuit that has a volatile memory and uses a secondary battery as a power source for circuit operation, a cutoff circuit that cuts off the application of voltage for circuit operation when charging the secondary battery, and at least a charging voltage that cuts off the voltage application when the voltage application is cut off. 1. A memory backup circuit comprising: a constant voltage application circuit that divides the voltage into a constant voltage and applies this voltage to the memory as a backup voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14182384U JPH0325212Y2 (en) | 1984-09-19 | 1984-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14182384U JPH0325212Y2 (en) | 1984-09-19 | 1984-09-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6155725U true JPS6155725U (en) | 1986-04-15 |
| JPH0325212Y2 JPH0325212Y2 (en) | 1991-05-31 |
Family
ID=30700164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14182384U Expired JPH0325212Y2 (en) | 1984-09-19 | 1984-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0325212Y2 (en) |
-
1984
- 1984-09-19 JP JP14182384U patent/JPH0325212Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0325212Y2 (en) | 1991-05-31 |