JPS59164458U - power circuit - Google Patents
power circuitInfo
- Publication number
- JPS59164458U JPS59164458U JP5906483U JP5906483U JPS59164458U JP S59164458 U JPS59164458 U JP S59164458U JP 5906483 U JP5906483 U JP 5906483U JP 5906483 U JP5906483 U JP 5906483U JP S59164458 U JPS59164458 U JP S59164458U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- terminal
- rectifier circuit
- input terminals
- power
- 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
- Stand-By Power Supply Arrangements (AREA)
- Rectifiers (AREA)
- Control Of Electrical Variables (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図及び第２図は従来のＲＡＭバックアップ用の電源
回路の回路図、第３図及び第４図は本考案になるＲＡＭ
バックアップ用の電源回路の一実施例、第３図はその回
路図、第４図は第３図に示した電源回路の動作を説明す
るための図である。
Ｄ□、Ｄ２．Ｄ３・・・・・・ダイオード、Ｄｚ・・川
・ツェナーダイオード、Ｔ１．Ｔ２・・・・・・トラン
ス、Ｃ□、 Ｃ２，Ｃ３・・・・・・コンデンサ、Ｃ１
・・・・・・トランスＴ１の等価浮遊容量、Ｒ１，Ｒ２
，Ｒ３・・・・・・抵抗器、１・・・・・・電源入力端
子、２・・・・・・ヒユーズ、３．５・・・・・・トラ
ンスＴ１の一次側端子、４・・・・・・電源入力端子、
６．７・・・・・・トランスＴ１の二次側端子、８・・
・・・・スイッチ、９・・・・・・主回路電源供給用の
電源端子、１０・・・・・・ＲＡＭバックアップ電源供
給用の電源端子、１１・・・・・・整流回路。
へ ２、 へ
曹−一ロー
〜−Ｌ
牙Ａ呂
ＪＴ；、、６
］パ゛ ″ ？
Ｃ−Figures 1 and 2 are circuit diagrams of the conventional RAM backup power supply circuit, and Figures 3 and 4 are the RAM according to the present invention.
FIG. 3 is a circuit diagram of an embodiment of a backup power supply circuit, and FIG. 4 is a diagram for explaining the operation of the power supply circuit shown in FIG. 3. D□, D2. D3...Diode, Dz...Zener diode, T1. T2...Transformer, C□, C2, C3...Capacitor, C1
...Equivalent stray capacitance of transformer T1, R1, R2
, R3...Resistor, 1...Power input terminal, 2...Fuse, 3.5...Primary side terminal of transformer T1, 4... ...Power input terminal,
6.7...Secondary side terminal of transformer T1, 8...
... Switch, 9 ... Power supply terminal for main circuit power supply, 10 ... Power supply terminal for RAM backup power supply, 11 ... Rectifier circuit. To 2, To Cao-Iro~-L Fang Aro JT;,,6 ] Pa ″?C-
Claims (1)
し、この−次側電源端子の一方がスイッチを介して前記
交流電源入力端子の一方に接続されると共に、この−次
側電源端子の他方が前記交流電源端子の他方に接続され
ているトランスと、前記トランスの二次側端子に接続さ
れている第１の整流回路と、前記第１の整流回路に接続
されている第１の電源端子と、前記第１の整流回路に接
続されている第２の電源端子とを具備した電源回路にお
いて、前記スイッチがＯＦＦ状態の際に前記第２の電源
端子に電源を供給するために、前記交流電源入力端子の
一方と、前記第２の電源端子との間に容量素子及び抵抗
器からなる直列回路、第２の整流回路を接続すると共に
、前記交流電源入力端子の他方と前記第２の整流回路の
接地点との間を前記トランスの一次側端子と二次側端子
との間に存在する浮遊容量で接続することにより、前記
第２の電源端子と前記接地点との間に微小電流路を構成
した電源回路。It has a pair of AC power input terminals and a pair of primary power supply terminals, one of the secondary power supply terminals is connected to one of the AC power input terminals via a switch, and the secondary power supply terminal is connected to one of the AC power input terminals via a switch. a first rectifier circuit connected to the secondary side terminal of the transformer; and a first rectifier circuit connected to the first rectifier circuit. In a power supply circuit comprising a power supply terminal and a second power supply terminal connected to the first rectifier circuit, in order to supply power to the second power supply terminal when the switch is in an OFF state, A series circuit including a capacitive element and a resistor and a second rectifier circuit are connected between one of the AC power input terminals and the second power supply terminal, and a series circuit including a capacitor and a resistor is connected between the other of the AC power input terminals and the second power supply terminal. By connecting the grounding point of the rectifier circuit with the stray capacitance that exists between the primary terminal and the secondary terminal of the transformer, a small amount of A power supply circuit that forms a current path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5906483U JPS59164458U (en) | 1983-04-20 | 1983-04-20 | power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5906483U JPS59164458U (en) | 1983-04-20 | 1983-04-20 | power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59164458U true JPS59164458U (en) | 1984-11-05 |
Family
ID=30189324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5906483U Pending JPS59164458U (en) | 1983-04-20 | 1983-04-20 | power circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59164458U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5645932B2 (en) * | 1972-12-23 | 1981-10-29 |
-
1983
- 1983-04-20 JP JP5906483U patent/JPS59164458U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5645932B2 (en) * | 1972-12-23 | 1981-10-29 |
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