JPS6434888U - - Google Patents
Info
- Publication number
- JPS6434888U JPS6434888U JP12748487U JP12748487U JPS6434888U JP S6434888 U JPS6434888 U JP S6434888U JP 12748487 U JP12748487 U JP 12748487U JP 12748487 U JP12748487 U JP 12748487U JP S6434888 U JPS6434888 U JP S6434888U
- Authority
- JP
- Japan
- Prior art keywords
- output voltage
- overvoltage
- light emitting
- light
- emitting element
- 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 1
- 230000006641 stabilisation Effects 0.000 claims 1
- 238000011105 stabilization Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案に係る直流安定化電源装置の実
施例を示す回路図、第２図は従来の直流安定化電
源装置の回路図である。
３……過電圧保護回路、６……検出部、７……
作動部、ＰＣ……光結合素子、ＰＤ……発光ダイ
オード、ＰＳ……フオトサイリスタ、Ｄ４……ツ
エナーダイオード、Ｑ２……制御トランジスタ。
FIG. 1 is a circuit diagram showing an embodiment of a DC stabilized power supply according to the present invention, and FIG. 2 is a circuit diagram of a conventional DC stabilized power supply. 3... Overvoltage protection circuit, 6... Detection section, 7...
Operating section, PC...photocoupler, PD...light emitting diode, PS...photothyristor, D4...Zener diode, Q2...control transistor.
Claims (1)
する変換部と、 この変換部の出力電圧が過電圧になつたとき出
力電圧を遮断する過電圧保護回路とを有するもの
において、 前記過電圧保護回路は、 過電圧を検出して発光する、発光素子を有する
検出部と、 前記発光素子の光を受光する、受光素子を有し
、 前記出力電圧が過電圧になつたとき、前記受光
素子をオンにして前記変換部の出力電圧を遮断す
る作動部とから成り、 前記検出部において、 前記発光素子に流れる電流をバイパスするため
の分流抵抗を並列接続したことを特徴とする直流
安定化電源装置。[Scope of Claim for Utility Model Registration] A converter that converts an unstable DC input voltage into a stable DC output voltage, and an overvoltage protection circuit that cuts off the output voltage when the output voltage of the converter becomes an overvoltage. , the overvoltage protection circuit includes: a detection unit having a light emitting element that detects an overvoltage and emits light; and a light receiving element that receives light from the light emitting element, and when the output voltage becomes an overvoltage, the light receiving element and an actuating part that turns on the element and cuts off the output voltage of the conversion part, and the DC stabilization is characterized in that in the detection part, a shunt resistor is connected in parallel to bypass the current flowing to the light emitting element. power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12748487U JPS6434888U (en) | 1987-08-24 | 1987-08-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12748487U JPS6434888U (en) | 1987-08-24 | 1987-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6434888U true JPS6434888U (en) | 1989-03-03 |
Family
ID=31379961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12748487U Pending JPS6434888U (en) | 1987-08-24 | 1987-08-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6434888U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0310550A (en) * | 1989-06-08 | 1991-01-18 | Fujitsu Ltd | Overvoltage detection control circuit for call signal equipment |
-
1987
- 1987-08-24 JP JP12748487U patent/JPS6434888U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0310550A (en) * | 1989-06-08 | 1991-01-18 | Fujitsu Ltd | Overvoltage detection control circuit for call signal equipment |
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