JPS6281433U - - Google Patents
Info
- Publication number
- JPS6281433U JPS6281433U JP17077685U JP17077685U JPS6281433U JP S6281433 U JPS6281433 U JP S6281433U JP 17077685 U JP17077685 U JP 17077685U JP 17077685 U JP17077685 U JP 17077685U JP S6281433 U JPS6281433 U JP S6281433U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- diode
- supply line
- anode
- battery device
- 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 1
- 230000014759 maintenance of location Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Power Sources (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
- Stand-By Power Supply Arrangements (AREA)
Description
第１図は本考案によるメモリ保持回路の構成を
示すブロツク図、第２図は従来のメモリ保持回路
の構成を示すブロツク図である。
１……制御用マイクロコンピユータ、２……バ
ツクアツプ電源端子、３……５Ｖ安定化電源、４
……電池。
FIG. 1 is a block diagram showing the structure of a memory holding circuit according to the present invention, and FIG. 2 is a block diagram showing the structure of a conventional memory holding circuit. 1... Control microcomputer, 2... Backup power supply terminal, 3... 5V stabilized power supply, 4
……battery.
Claims (1)
らバツクアツプ電力が常時供給される車載用機器
の制御用マイクロコンピユータに、バツクアツプ
オフ時、メモリ保持用電力を供給する補助電源回
路において、 (a) 上記バツテリ装置よりも電源側に設けられ
、電源ラインとアース間に順方向に接続される第
１のダイオードとコンデンサから成る直列回路。 (b) 上記第１のダイオードのアノードと、上記
バツテリ装置と上記電源ラインの接続点の間の上
記電源ラインに直列順方向に接続される第２のダ
イオード、および (c) アノードが上記第２のダイオードのアノー
ドと、カソードが上記第１のダイオードのアノー
ドと接続されている第３のダイオード を含むことを特徴とするメモリ保持回路。[Scope of Claim for Utility Model Registration] In an auxiliary power supply circuit that supplies memory retention power during backup to a microcomputer for controlling in-vehicle equipment that is constantly supplied with backup power from a battery device connected in parallel to a power supply line. (a) A series circuit consisting of a first diode and a capacitor, which is provided on the power supply side of the battery device and is connected in the forward direction between the power supply line and the ground. (b) a second diode connected in series forward direction to the power supply line between the anode of the first diode and the connection point of the battery device and the power supply line, and (c) an anode of the second diode; and a third diode whose cathode is connected to the anode of the first diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17077685U JPS6281433U (en) | 1985-11-06 | 1985-11-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17077685U JPS6281433U (en) | 1985-11-06 | 1985-11-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6281433U true JPS6281433U (en) | 1987-05-25 |
Family
ID=31105804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17077685U Pending JPS6281433U (en) | 1985-11-06 | 1985-11-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6281433U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57206946A (en) * | 1981-06-15 | 1982-12-18 | Hitachi Ltd | Cell backup circuit for memory |
-
1985
- 1985-11-06 JP JP17077685U patent/JPS6281433U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57206946A (en) * | 1981-06-15 | 1982-12-18 | Hitachi Ltd | Cell backup circuit for memory |
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