JPH0370086U - - Google Patents
Info
- Publication number
- JPH0370086U JPH0370086U JP12853889U JP12853889U JPH0370086U JP H0370086 U JPH0370086 U JP H0370086U JP 12853889 U JP12853889 U JP 12853889U JP 12853889 U JP12853889 U JP 12853889U JP H0370086 U JPH0370086 U JP H0370086U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- capacitor
- switching element
- semiconductor switching
- pulsating voltage
- 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
- 239000003990 capacitor Substances 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims 3
- 238000009499 grossing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 2
- 101100365087 Arabidopsis thaliana SCRA gene Proteins 0.000 description 1
- 101000668165 Homo sapiens RNA-binding motif, single-stranded-interacting protein 1 Proteins 0.000 description 1
- 102100039692 RNA-binding motif, single-stranded-interacting protein 1 Human genes 0.000 description 1
- 101150105073 SCR1 gene Proteins 0.000 description 1
- 101100134054 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) NTG1 gene Proteins 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
Description
第１図はスイツチング電源の従来の突入電流防
止の回路図、第２図は第１図の回路の各部の波形
説明図、第３図は本発明の実施例を示すスイツチ
ング電源の突入電流防止回路図、第４図は第３図
の回路の各部の波形説明図、第５図、第６図は本
考案の他の実施例回路図である。図において、Ｄ
１……ダイオードブリツヂ、Ｄ２，Ｄ３，Ｄ４，
Ｄ５，Ｄ６，Ｄ７……整流ダイオード、ＳＣＲ１
，ＳＣＲ２……サイリスタ又はトライアツク、Ｑ
１はスイツチング用トランジスタ、Ｔ１，Ｔ１′
……出力変換トランス、Ｌ１……チヨークコイル
、Ｒ１，Ｒ２，Ｒ３，Ｒ４，Ｒ５……抵抗、Ｃ１
，Ｃ２，Ｃ３……コンデンサである。
Fig. 1 is a conventional inrush current prevention circuit diagram for a switching power supply, Fig. 2 is a waveform explanatory diagram of each part of the circuit in Fig. 1, and Fig. 3 is an inrush current prevention circuit for a switching power supply showing an embodiment of the present invention. 4 are waveform explanatory diagrams of various parts of the circuit of FIG. 3, and FIGS. 5 and 6 are circuit diagrams of other embodiments of the present invention. In the figure, D
1...Diode bridge, D2, D3, D4,
D5, D6, D7... Rectifier diode, SCR1
, SCR2...thyristor or triax, Q
1 is a switching transistor, T1, T1'
...Output conversion transformer, L1...Chiyoke coil, R1, R2, R3, R4, R5...Resistance, C1
, C2, C3... are capacitors.
Claims (1)
る第１のコンデンサの間に接続された半導体スイ
ツチング素及び第１の抵抗器とを持つたスイツチ
ング回路に於いて、前記半導体スイツチング素子
を点弧する為に、前記脈流電圧を第２、第３の抵
抗器により分圧し、該半導体スイツチング素子の
ゲート、カソード間に前記第３の抵抗器と並列に
接続された第２のコンデンサを挿入し、入力電圧
を印加してから該半導体スイツチング素子を点弧
するまでの時限を前記第２のコンデンサ及び第２
、第３の抵抗により設定する事を特徴としたスイ
ツチング電源。 In a switching circuit having a semiconductor switching element and a first resistor connected at least between a rectifier diode and a first capacitor for smoothing a pulsating voltage, in order to ignite the semiconductor switching element, The pulsating voltage is divided by second and third resistors, a second capacitor connected in parallel with the third resistor is inserted between the gate and cathode of the semiconductor switching element, and the input voltage is adjusted. The second capacitor and the second
, a switching power supply characterized by setting by a third resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989128538U JPH0749539Y2 (en) | 1989-11-02 | 1989-11-02 | Switching power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989128538U JPH0749539Y2 (en) | 1989-11-02 | 1989-11-02 | Switching power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0370086U true JPH0370086U (en) | 1991-07-12 |
| JPH0749539Y2 JPH0749539Y2 (en) | 1995-11-13 |
Family
ID=31676239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989128538U Expired - Lifetime JPH0749539Y2 (en) | 1989-11-02 | 1989-11-02 | Switching power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0749539Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012077195A1 (en) * | 2010-12-08 | 2012-06-14 | 富士通株式会社 | Electronic instrument |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6377383A (en) * | 1986-09-20 | 1988-04-07 | Pfu Ltd | Starting circuit |
-
1989
- 1989-11-02 JP JP1989128538U patent/JPH0749539Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6377383A (en) * | 1986-09-20 | 1988-04-07 | Pfu Ltd | Starting circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012077195A1 (en) * | 2010-12-08 | 2012-06-14 | 富士通株式会社 | Electronic instrument |
| JP5556900B2 (en) * | 2010-12-08 | 2014-07-23 | 富士通株式会社 | Electronics |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0749539Y2 (en) | 1995-11-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |