JPS6344689U - - Google Patents
Info
- Publication number
- JPS6344689U JPS6344689U JP13532686U JP13532686U JPS6344689U JP S6344689 U JPS6344689 U JP S6344689U JP 13532686 U JP13532686 U JP 13532686U JP 13532686 U JP13532686 U JP 13532686U JP S6344689 U JPS6344689 U JP S6344689U
- Authority
- JP
- Japan
- Prior art keywords
- overcurrent
- turns
- switching element
- protection transistor
- overcurrent protection
- 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
- 238000004804 winding Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図はこの考案の一実施例を示す回路図であ
る。第２図は従来の自励型スイツチング電源の一
例を示す回路図である。第３図は第２図に示す従
来例の問題点を改良するために提案された自励型
スイツチング電源の一例を示す回路図である。
図において、１０は自励型スイツチング電源、
１２はスイツチングトランジスタ、１６は過電流
検知抵抗、２６はベース巻線、３２は第１の過電
流保護用トランジスタ、３６はダイオード、３８
はコンデンサ、４２は第２の過電流保護用トラン
ジスタを示す。
FIG. 1 is a circuit diagram showing an embodiment of this invention. FIG. 2 is a circuit diagram showing an example of a conventional self-excited switching power supply. FIG. 3 is a circuit diagram showing an example of a self-excited switching power supply proposed to improve the problems of the conventional example shown in FIG. In the figure, 10 is a self-excited switching power supply;
12 is a switching transistor, 16 is an overcurrent detection resistor, 26 is a base winding, 32 is a first overcurrent protection transistor, 36 is a diode, 38
42 represents a capacitor, and 42 represents a second overcurrent protection transistor.
Claims (1)
ための１次巻線、 前記１次巻線に磁気的に結合される別の巻線、 前記スイツチング素子の過電流を検知するため
の過電流検知手段、 その電源として前記別の巻線に誘起される正電
位が与えられ、前記過電流検知手段が過電流を検
知したことに応じてオンになる第１の過電流保護
用トランジスタ、 前記第１の過電流保護用トランジスタがオンに
なることに応じてオンになり、それによつて前記
スイツチング素子をオフにする第２の過電流保護
用トランジスタを含む、自励型スイツチング電源
。[Claims for Utility Model Registration] An oscillation circuit having a switching element, a primary winding connected to the oscillation circuit to take out its output, another winding magnetically coupled to the primary winding, Overcurrent detection means for detecting overcurrent of the switching element, a positive potential induced in the other winding is applied as a power source thereof, and the overcurrent detection means turns on in response to detecting an overcurrent. a first overcurrent protection transistor that turns on in response to the first overcurrent protection transistor being turned on, and a second overcurrent protection transistor that turns off the switching element; Self-excited switching power supplies, including:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13532686U JPS6344689U (en) | 1986-09-02 | 1986-09-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13532686U JPS6344689U (en) | 1986-09-02 | 1986-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6344689U true JPS6344689U (en) | 1988-03-25 |
Family
ID=31037409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13532686U Pending JPS6344689U (en) | 1986-09-02 | 1986-09-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6344689U (en) |
-
1986
- 1986-09-02 JP JP13532686U patent/JPS6344689U/ja active Pending
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