JPS5992589U - power supply - Google Patents
power supplyInfo
- Publication number
- JPS5992589U JPS5992589U JP18948582U JP18948582U JPS5992589U JP S5992589 U JPS5992589 U JP S5992589U JP 18948582 U JP18948582 U JP 18948582U JP 18948582 U JP18948582 U JP 18948582U JP S5992589 U JPS5992589 U JP S5992589U
- Authority
- JP
- Japan
- Prior art keywords
- stabilized
- current detection
- converter
- switching transistor
- secondary side
- 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
- Dc-Dc Converters (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図は従来の電源装置における過電流保護手段を示す
回路ブロック図、第２図は本考案の一実施例を示す回路
ブロック図である。
Ｔ１・・・・・・高周波トランス、Ｑ１＋ Ｑ２＋ Ｑ
３・・・・・・スイッチングトランジスタ、ＯＣｌ・・
・・・・過電流保護回路、ＣＴ、、 ＣＴ２． ＣＴ３
・・・・・・電流検出回路、ＰＷＭ工・・・・・・パル
ス幅変調回路、Ｄｌ、Ｄ２．Ｄ３・・・・・・逆流防止
用ダイオード。FIG. 1 is a circuit block diagram showing an overcurrent protection means in a conventional power supply device, and FIG. 2 is a circuit block diagram showing an embodiment of the present invention. T1...High frequency transformer, Q1+ Q2+ Q
3...Switching transistor, OCl...
...Overcurrent protection circuit, CT, CT2. CT3
...Current detection circuit, PWM work...Pulse width modulation circuit, Dl, D2. D3... Diode for backflow prevention.
Claims (1)
御方式のＤＣ−ＤＣコンバータにおいて、前記トランス
の一次側に設けられ、二次側の複数の安定化出力のうち
の一つを安定化制御するとともに、二次側の複数の安定
化出力回路それぞれに電力を供給制御するスイッチング
トランジスタと、前記複数の安定化出力回路それぞれに
設けられた電流検出回路と、この各電流検出回路の出力
信号を受け、その各入力信号のうちの何れか一つが過電
流設定値となった際に、前記スイッチングトランジスタ
のオンデユーテイを小さくする過電流保護回路とを具備
してなることを特徴とした電源装置。In a pulse width control type DC-DC converter that obtains a plurality of stabilized outputs from a single transformer, the DC-DC converter is provided on the primary side of the transformer and stabilizes and controls one of the plurality of stabilized outputs on the secondary side. In addition, a switching transistor that supplies and controls power to each of the plurality of stabilized output circuits on the secondary side, a current detection circuit provided in each of the plurality of stabilized output circuits, and a current detection circuit that receives the output signal of each of the current detection circuits. , an overcurrent protection circuit that reduces the on-duty of the switching transistor when any one of the input signals reaches an overcurrent setting value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18948582U JPS5992589U (en) | 1982-12-15 | 1982-12-15 | power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18948582U JPS5992589U (en) | 1982-12-15 | 1982-12-15 | power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5992589U true JPS5992589U (en) | 1984-06-23 |
Family
ID=30408519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18948582U Pending JPS5992589U (en) | 1982-12-15 | 1982-12-15 | power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5992589U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61218365A (en) * | 1985-03-23 | 1986-09-27 | Hitachi Ltd | Switching regulator |
| JPS62244274A (en) * | 1986-04-17 | 1987-10-24 | Matsushita Electric Ind Co Ltd | Power unit |
-
1982
- 1982-12-15 JP JP18948582U patent/JPS5992589U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61218365A (en) * | 1985-03-23 | 1986-09-27 | Hitachi Ltd | Switching regulator |
| JPS62244274A (en) * | 1986-04-17 | 1987-10-24 | Matsushita Electric Ind Co Ltd | Power unit |
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