JPH0253285U - - Google Patents
Info
- Publication number
- JPH0253285U JPH0253285U JP13275088U JP13275088U JPH0253285U JP H0253285 U JPH0253285 U JP H0253285U JP 13275088 U JP13275088 U JP 13275088U JP 13275088 U JP13275088 U JP 13275088U JP H0253285 U JPH0253285 U JP H0253285U
- Authority
- JP
- Japan
- Prior art keywords
- base
- switching transistor
- transistor
- blocking diode
- 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 12
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の実施例に係るスイツチング電
源の回路図、第２図は従来例に係るスイツチング
電源の回路図である。
Ｔ１…コンバータトランス、ｎ１…一次巻線、
ｎ２…二次巻線、ｎ３…制御巻線、ＴＲ１…スイ
ツチングトランジスタ、ＴＲ２…制御トランジス
タ、ＴＲ３…受光トランジスタ、Ｄ５…発光ダイ
オード、Ｄ２…第１の逆流阻止ダイオードＤ、Ｄ
３…第２の逆流阻止ダイオードＤ、Ｄ６…第３の
逆流阻止ダイオード。
FIG. 1 is a circuit diagram of a switching power supply according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional switching power supply. T1...Converter transformer, n1...Primary winding,
n2... Secondary winding, n3... Control winding, TR1... Switching transistor, TR2... Control transistor, TR3... Light receiving transistor, D5... Light emitting diode, D2... First backflow blocking diode D, D
3...Second backflow blocking diode D, D6...Third backflow blocking diode.
Claims (1)
端側が整流ダイオードを介して出力側に接続され
た二次巻線、および前記一次巻線の誘起電圧を正
帰還させる制御巻線を備えたコンバータトランス
と、 コレクタが前記一次巻線の他端側に接続された
スイツチングトランジスタと、 前記制御巻線の一端側と前記スイツチングトラ
ンジスタのベースとの間に接続された第１の逆流
阻止ダイオードと、 前記制御巻線の一端側に接続された第２の逆流
阻止ダイオードと、 前記一次巻線の一端側と前記スイツチングトラ
ンジスタのベースとの間に接続された起動抵抗と
、 コレクタが前記スイツチングトランジスタのベ
ースに接続された制御トランジスタと、 コレクタ・エミツタが前記制御トランジスタの
ベースと前記第２の逆流阻止ダイオードとの間に
接続された受光トランジスタと、 前記出力側の出力電圧の変化を前記受光トラン
ジスタのベースに与える発光ダイオードとを備え
、 前記制御巻線の一端側と前記スイツチングトラ
ンジスタのベースとの間に前記第１の逆流阻止ダ
イオードに直列に第３の逆流阻止ダイオードを接
続したことを特徴とするリンギングチヨークコン
バータ方式のスイツチング電源。[Claims for Utility Model Registration] A primary winding with one end connected to an input voltage source, a secondary winding with one end connected to the output side via a rectifier diode, and positive feedback of the induced voltage in the primary winding. a converter transformer having a control winding that causes the switching transistor to switch; a switching transistor having a collector connected to the other end of the primary winding; and a switching transistor connected between one end of the control winding and a base of the switching transistor. a first reverse current blocking diode connected to one end of the control winding; and a second reverse current blocking diode connected between one end of the primary winding and the base of the switching transistor. a resistor; a control transistor whose collector is connected to the base of the switching transistor; a light receiving transistor whose collector and emitter are connected between the base of the control transistor and the second backflow blocking diode; and the output side. a light emitting diode that applies a change in output voltage to the base of the light receiving transistor, and a third backflow blocking diode connected in series with the first backflow blocking diode between one end of the control winding and the base of the switching transistor A ringing chain yoke converter type switching power supply characterized by a reverse current blocking diode connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13275088U JPH0253285U (en) | 1988-10-11 | 1988-10-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13275088U JPH0253285U (en) | 1988-10-11 | 1988-10-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0253285U true JPH0253285U (en) | 1990-04-17 |
Family
ID=31390002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13275088U Pending JPH0253285U (en) | 1988-10-11 | 1988-10-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0253285U (en) |
-
1988
- 1988-10-11 JP JP13275088U patent/JPH0253285U/ja active Pending
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