JPS61117594U - - Google Patents
Info
- Publication number
- JPS61117594U JPS61117594U JP20080384U JP20080384U JPS61117594U JP S61117594 U JPS61117594 U JP S61117594U JP 20080384 U JP20080384 U JP 20080384U JP 20080384 U JP20080384 U JP 20080384U JP S61117594 U JPS61117594 U JP S61117594U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- input
- base
- feedback
- 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
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 3
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案のスイツチング制御型電源回路
の一実施例を示す回路図、第２図は従来のスイツ
チング制御型電源回路を示す回路図、第３図は第
１図及び第２図の各部の動作波形を示す波形図で
ある。
１……入力整流部、２……ブロツキング発振部
、３……コンバータトランス、４……誤差検出部
、５……制御回路部、６……出力整流器、ＴＲ４
……スイツチングトランジスタ、ＣＫ′……正帰
還電流制御回路。
Fig. 1 is a circuit diagram showing an embodiment of the switching control type power supply circuit of the present invention, Fig. 2 is a circuit diagram showing a conventional switching control type power supply circuit, and Fig. 3 shows each part of Figs. 1 and 2. FIG. DESCRIPTION OF SYMBOLS 1...Input rectification section, 2...Blocking oscillation section, 3...Converter transformer, 4...Error detection section, 5...Control circuit section, 6...Output rectifier, TR4
...Switching transistor, CK'...Positive feedback current control circuit.
Claims (1)
線とスイツチングトランジスタのコレクタ・エミ
ツタ間を直列に接続し、前記トランスの帰還巻線
から前記トランジスタのベースに正帰還させてブ
ロツキング発振を行なわせると共に、前記トラン
スから得る直流電圧の変動に応じて前記トランジ
スタのスイツチングタイミングを制御するように
した電源回路に於いて、前記帰還巻線と前記トラ
ンジスタのベースとの間に直流入力電圧に応じて
動作する正帰還電流制御回路を設け、この制御回
路により前記ベースに供給される正帰還電流を前
記入力電圧の低いときに増大させ、高いときに減
少させるようにしたスイツチング制御型電源回路
。 The input winding of the converter transformer and the collector-emitter of the switching transistor are connected in series with respect to the DC input, and positive feedback is made from the feedback winding of the transformer to the base of the transistor to cause blocking oscillation. In a power supply circuit that controls the switching timing of the transistor according to fluctuations in the DC voltage obtained from a transformer, a positive voltage switch that operates according to the DC input voltage is connected between the feedback winding and the base of the transistor. A switching control type power supply circuit comprising a feedback current control circuit, the control circuit increasing the positive feedback current supplied to the base when the input voltage is low and decreasing it when the input voltage is high.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20080384U JPS61117594U (en) | 1984-12-28 | 1984-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20080384U JPS61117594U (en) | 1984-12-28 | 1984-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61117594U true JPS61117594U (en) | 1986-07-24 |
Family
ID=30761990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20080384U Pending JPS61117594U (en) | 1984-12-28 | 1984-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61117594U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5918866U (en) * | 1982-07-29 | 1984-02-04 | ダイワ精工株式会社 | Clutch return device for double bearing type fishing reel |
-
1984
- 1984-12-28 JP JP20080384U patent/JPS61117594U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5918866U (en) * | 1982-07-29 | 1984-02-04 | ダイワ精工株式会社 | Clutch return device for double bearing type fishing reel |