JPS61123687U - - Google Patents
Info
- Publication number
- JPS61123687U JPS61123687U JP532485U JP532485U JPS61123687U JP S61123687 U JPS61123687 U JP S61123687U JP 532485 U JP532485 U JP 532485U JP 532485 U JP532485 U JP 532485U JP S61123687 U JPS61123687 U JP S61123687U
- Authority
- JP
- Japan
- Prior art keywords
- output
- transistor
- self
- transformer
- winding
- 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 8
- 238000001514 detection method Methods 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims description 2
- 238000005513 bias potential Methods 0.000 claims 2
- 230000010355 oscillation Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Description
第１図は本考案による自励振形スイツチングレ
ギユレータの一実施例を示す回路図、第２図は従
来の自励振形スイツチングレギユレータの回路図
である。
１は制御部、２は整流平滑部、３は出力電圧検
出、誤差増幅部、Ｒ１〜Ｒ１７は抵抗、Ｃ１〜Ｃ
６はコンデンサ、Ｌはチヨークコイル、Ｄ１〜Ｄ
４はダイオード、Ｑ１〜Ｑ５はトランジスタ、Ｐ
Ｃは光結合素子、ＺＤはゼナーダイオード、Ｔ１
はコンバータトランス、Ｎ１は１次巻線、Ｎ１は
１次巻線、Ｎ２は２次巻線、Ｎ３はバイアス巻線
。
FIG. 1 is a circuit diagram showing an embodiment of a self-oscillating switching regulator according to the present invention, and FIG. 2 is a circuit diagram of a conventional self-oscillating switching regulator. 1 is a control section, 2 is a rectification and smoothing section, 3 is an output voltage detection and error amplification section, R1 to R17 are resistors, C1 to C
6 is a capacitor, L is a chiyoke coil, D1~D
4 is a diode, Q1 to Q5 are transistors, P
C is a photocoupler, ZD is a zener diode, T1
is the converter transformer, N1 is the primary winding, N2 is the secondary winding, and N3 is the bias winding.
Claims (1)
直流電源に接続されるトランスと、該トランスに
巻回される制御巻線及び２次巻線と、該制御巻線
の出力により前記スイツチングトランジスタに正
帰還をかけ自励発振させる手段と、前記２次巻線
の出力を整流平滑する手段及びその出力電圧を検
出する手段と、検出された出力電圧に従つて前記
スイツチングトランジスタの発振周波数を調節す
るトランジスタをふくむ制御部とを有する自励振
形スイツチングレギユレータにおいて、前記トラ
ンスの電流が所定値以上であることを検出する過
電流検出回路と、その出力に従つて前記制御部の
トランジスタに動作バイアス電位を与える手段と
を有し、該動作バイアス電位により負荷短絡及び
過電流時にも前記制御回路が安定動作することを
特徴とする自励振形スイツチングレギユレータ。 A transformer whose primary winding is connected to a DC power supply via a switching transistor, a control winding and a secondary winding wound around the transformer, and an output of the control winding that connects the switching transistor with a positive voltage. means for applying feedback to self-excited oscillation; means for rectifying and smoothing the output of the secondary winding; and means for detecting the output voltage; and adjusting the oscillation frequency of the switching transistor in accordance with the detected output voltage. In a self-oscillating switching regulator having a control section including a transistor, an overcurrent detection circuit detects that the current of the transformer is higher than a predetermined value, and the transistor of the control section operates according to the output of the overcurrent detection circuit. 1. A self-oscillating switching regulator, comprising means for applying a bias potential, and the operating bias potential allows the control circuit to operate stably even in the event of a load short circuit or overcurrent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP532485U JPS61123687U (en) | 1985-01-21 | 1985-01-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP532485U JPS61123687U (en) | 1985-01-21 | 1985-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61123687U true JPS61123687U (en) | 1986-08-04 |
Family
ID=30481723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP532485U Pending JPS61123687U (en) | 1985-01-21 | 1985-01-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61123687U (en) |
-
1985
- 1985-01-21 JP JP532485U patent/JPS61123687U/ja active Pending
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