JPH0241631U - - Google Patents
Info
- Publication number
- JPH0241631U JPH0241631U JP11791588U JP11791588U JPH0241631U JP H0241631 U JPH0241631 U JP H0241631U JP 11791588 U JP11791588 U JP 11791588U JP 11791588 U JP11791588 U JP 11791588U JP H0241631 U JPH0241631 U JP H0241631U
- Authority
- JP
- Japan
- Prior art keywords
- input
- voltage
- protection circuit
- primary current
- overcurrent
- 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
Landscapes
- Dc-Dc Converters (AREA)
- Protection Of Static Devices (AREA)
Description
第１図は本案の一実施例を示す図、第２図は本
案の動作を説明するための図である。
１……整流器、２……基準電圧、３……演算増
幅器、４……制御回路、５……比較器、６……ス
イツチング素子、７……電流検出用抵抗、８……
トランス。
FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram for explaining the operation of the present invention. DESCRIPTION OF SYMBOLS 1... Rectifier, 2... Reference voltage, 3... Operational amplifier, 4... Control circuit, 5... Comparator, 6... Switching element, 7... Current detection resistor, 8...
Trance.
Claims (1)
可能なスイツチング電源の過電流保護回路におい
て、保護回路の比較器の入力の一方に、一次電流
を抵抗で検出し平滑して得られる一次電流の平均
値に比例した電圧を入力し、もう一方の過電流設
定入力には、入力電圧に反比例する電圧を加える
ことを特徴とする過電流保護回路。 In an overcurrent protection circuit for a switching power supply that has a wide control range and can handle a wide range of input voltages, the average primary current obtained by detecting and smoothing the primary current with a resistor is connected to one input of the comparator of the protection circuit. An overcurrent protection circuit that inputs a voltage proportional to the input voltage, and applies a voltage inversely proportional to the input voltage to the other overcurrent setting input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11791588U JPH0241631U (en) | 1988-09-09 | 1988-09-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11791588U JPH0241631U (en) | 1988-09-09 | 1988-09-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0241631U true JPH0241631U (en) | 1990-03-22 |
Family
ID=31361797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11791588U Pending JPH0241631U (en) | 1988-09-09 | 1988-09-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0241631U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0336958A (en) * | 1989-06-29 | 1991-02-18 | Hanshin Electric Co Ltd | Dc-dc converter |
-
1988
- 1988-09-09 JP JP11791588U patent/JPH0241631U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0336958A (en) * | 1989-06-29 | 1991-02-18 | Hanshin Electric Co Ltd | Dc-dc converter |