JPS6198341U - - Google Patents
Info
- Publication number
- JPS6198341U JPS6198341U JP18285784U JP18285784U JPS6198341U JP S6198341 U JPS6198341 U JP S6198341U JP 18285784 U JP18285784 U JP 18285784U JP 18285784 U JP18285784 U JP 18285784U JP S6198341 U JPS6198341 U JP S6198341U
- Authority
- JP
- Japan
- Prior art keywords
- current
- spike
- overcurrent detection
- output
- transformer
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Protection Of Static Devices (AREA)
Description
第１図は本考案に係る過電流検出回路を適用し
たスイツチング電源の一例を示す部分回路図、第
２図はその動作波形図、第３図は従来技術を示す
回路図、第４図はその動作波形図である。
１，１１……過電流検出回路、２……制御回路
、３……ピークチヤージ回路、Ｔ……スイツチン
グトランス、ＣＴ……電流トランス、Ｄ３，Ｄ４
……ダイオード、Ｃ１……コンデンサ。
Fig. 1 is a partial circuit diagram showing an example of a switching power supply to which the overcurrent detection circuit according to the present invention is applied, Fig. 2 is its operating waveform diagram, Fig. 3 is a circuit diagram showing the conventional technology, and Fig. 4 is the same. It is an operation waveform diagram. 1, 11...Overcurrent detection circuit, 2...Control circuit, 3...Peak charge circuit, T...Switching transformer, CT...Current transformer, D3 , D4
...Diode, C1 ...Capacitor.
Claims (1)
電流トランスと、この出力を整流するダイオード
と、その整流出力をピークチヤージして制御回路
に印加するピークチヤージ回路とを備えた過電流
検出回路において、前記電流トランスの出力両端
間に、一次電流の立ち上がり時のスパイク状の電
流成分に起因して生じるスパイク状電圧成分を消
除するコンデンサを接続することを特徴とする過
電流検出回路。 An overcurrent detection circuit comprising a current transformer for detecting the primary side current of the switching transformer, a diode for rectifying the output of the current transformer, and a peak charge circuit for peak charging the rectified output and applying the peak charge to the control circuit. An overcurrent detection circuit characterized in that a capacitor is connected between both output terminals to eliminate a spike-like voltage component generated due to a spike-like current component at the rise of the primary current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18285784U JPS6198341U (en) | 1984-12-01 | 1984-12-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18285784U JPS6198341U (en) | 1984-12-01 | 1984-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6198341U true JPS6198341U (en) | 1986-06-24 |
Family
ID=30740390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18285784U Pending JPS6198341U (en) | 1984-12-01 | 1984-12-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6198341U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS528982U (en) * | 1975-07-08 | 1977-01-21 | ||
| JPS5952474B2 (en) * | 1980-03-21 | 1984-12-19 | 富士電機株式会社 | vending machine |
-
1984
- 1984-12-01 JP JP18285784U patent/JPS6198341U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS528982U (en) * | 1975-07-08 | 1977-01-21 | ||
| JPS5952474B2 (en) * | 1980-03-21 | 1984-12-19 | 富士電機株式会社 | vending machine |