JPS59122623U - RAM backup power supply circuit - Google Patents
RAM backup power supply circuitInfo
- Publication number
- JPS59122623U JPS59122623U JP1505883U JP1505883U JPS59122623U JP S59122623 U JPS59122623 U JP S59122623U JP 1505883 U JP1505883 U JP 1505883U JP 1505883 U JP1505883 U JP 1505883U JP S59122623 U JPS59122623 U JP S59122623U
- Authority
- JP
- Japan
- Prior art keywords
- ram
- power supply
- supply circuit
- backup power
- ram backup
- 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
Landscapes
- Power Sources (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のＲＡＭバックアップ電源回路の一例の回
路図、第２図は本考案回路の一実施例の回路図である。
３・・・ＡＣプラグ、４・・・負荷、５・・・倍電圧整
流回路、６ａ、６ｂ・・・端子、Ｃ□〜Ｃ６・・・コン
デンサ、Ｄ□〜Ｄ５・・・ダイオード、Ｄｚ□、 Ｄｚ
２・・・ツェナーダイオード、Ｒ□〜Ｒ１・・・抵抗、
Ｑｌｓ Ｑ２・・・トランジスタ、Ｔ１．Ｔ２・・・ト
ランス。FIG. 1 is a circuit diagram of an example of a conventional RAM backup power supply circuit, and FIG. 2 is a circuit diagram of an embodiment of the circuit of the present invention. 3... AC plug, 4... Load, 5... Voltage doubler rectifier circuit, 6a, 6b... Terminal, C□~C6... Capacitor, D□~D5... Diode, Dz□ , Dz
2...Zener diode, R□~R1...resistance,
Qls Q2...transistor, T1. T2...Trance.
Claims (1)
機器の非動作時にあっても該データを保存するために該
ＲＡＭに電源を供給するＲＡＭバックアップ電源回路に
おいて、該電気機器の主電源を供給するための電源トラ
ンスの１次側の電源スィッチと並列に設けられたコンデ
ンサと、該電源スィッチの開成時に該電源トランスの２
次側に誘起される交流の整流された電流が該電気機器に
供給されないよう遮断するスイッチング素子と、該電源
スィッチの開閉成に係わらず該２次側に誘起される交流
を供給され該交流を整流して該ＲＡＭに供給する整流回
路とよりなるＲＡＭバックアップ電源回路。A RAM backup power supply circuit used in an electrical device that stores data in a RAM and supplies power to the RAM in order to save the data even when the electrical device is not operating, which supplies the main power of the electrical device. A capacitor installed in parallel with the power switch on the primary side of the power transformer for
A switching element that cuts off rectified alternating current induced on the secondary side so that it is not supplied to the electrical equipment; A RAM backup power supply circuit consisting of a rectifier circuit that rectifies and supplies the rectifier to the RAM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1505883U JPS59122623U (en) | 1983-02-04 | 1983-02-04 | RAM backup power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1505883U JPS59122623U (en) | 1983-02-04 | 1983-02-04 | RAM backup power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59122623U true JPS59122623U (en) | 1984-08-18 |
Family
ID=30146399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1505883U Pending JPS59122623U (en) | 1983-02-04 | 1983-02-04 | RAM backup power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59122623U (en) |
-
1983
- 1983-02-04 JP JP1505883U patent/JPS59122623U/en active Pending
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