JPS6447587U - - Google Patents
Info
- Publication number
- JPS6447587U JPS6447587U JP14145187U JP14145187U JPS6447587U JP S6447587 U JPS6447587 U JP S6447587U JP 14145187 U JP14145187 U JP 14145187U JP 14145187 U JP14145187 U JP 14145187U JP S6447587 U JPS6447587 U JP S6447587U
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- voltage
- outputs
- switching
- shunt
- 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 3
- 238000006243 chemical reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案に係るスイツチング電源の電気
回路図、第２図は同じく別の実施例における電気
回路図、第３図は従来のスイツチング電源の電気
回路図である。
３……変圧器、４……スイツチ素子、５１，５
２……整流平滑回路、７……制御回路、８……電
圧検出回路、８１，８２……抵抗、８３……シヤ
ント．レギユレータ、８４……発光ダイオード、
８５……フオトトランジスタ。
FIG. 1 is an electrical circuit diagram of a switching power supply according to the present invention, FIG. 2 is an electrical circuit diagram of another embodiment, and FIG. 3 is an electrical circuit diagram of a conventional switching power supply. 3...Transformer, 4...Switch element, 51,5
2... Rectifier and smoothing circuit, 7... Control circuit, 8... Voltage detection circuit, 81, 82... Resistor, 83... Shunt. Regulator, 84... light emitting diode,
85...Phototransistor.
Claims (1)
整流平滑して複数の直流出力を発生する変換回路
と、前記変換回路のスイツチ素子を制御する制御
回路と、前記直流出力の電圧を検出し検出信号を
前記制御回路に入力する電圧検出回路とを備える
スイツチング電源において、前記電圧検出回路は
、一端が前記複数の直流出力のそれぞれに接続さ
れ他端が共通に接続された複数の抵抗と、前記複
数の抵抗が共通に接続された接続点における電圧
信号が制御電極に入力されるシヤント．レギユレ
ータと、前記接続点の電圧が供給されて動作し前
記シヤント．レギユレータの主電極と直列に接続
された発光ダイオードと、前記発光ダイオードと
光結合され前記制御回路に接続されたフオトトラ
ンジスタとを備え、前記接続点の電圧が一定とな
るように、前記制御回路によつて前記スイツチ素
子を制御することを特徴とするスイツチング電源
。 a conversion circuit that switches a DC input and rectifies and smoothes a switching output to generate a plurality of DC outputs; a control circuit that controls switching elements of the conversion circuit; and a control circuit that detects the voltage of the DC output and sends a detection signal to the control circuit. In the switching power supply, the voltage detection circuit includes a plurality of resistors, one end of which is connected to each of the plurality of DC outputs and the other end of which is connected in common, and a plurality of resistors that are commonly connected to the plurality of DC outputs. A shunt in which the voltage signal at the connection point connected to the control electrode is input to the control electrode. The voltage at the connection point is supplied to the regulator and the shunt is operated. A light emitting diode connected in series with the main electrode of the regulator, and a phototransistor optically coupled to the light emitting diode and connected to the control circuit. A switching power supply characterized in that it controls the switching element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14145187U JPS6447587U (en) | 1987-09-16 | 1987-09-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14145187U JPS6447587U (en) | 1987-09-16 | 1987-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6447587U true JPS6447587U (en) | 1989-03-23 |
Family
ID=31406521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14145187U Pending JPS6447587U (en) | 1987-09-16 | 1987-09-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6447587U (en) |
-
1987
- 1987-09-16 JP JP14145187U patent/JPS6447587U/ja active Pending