JPS62149278U - - Google Patents
Info
- Publication number
- JPS62149278U JPS62149278U JP3514386U JP3514386U JPS62149278U JP S62149278 U JPS62149278 U JP S62149278U JP 3514386 U JP3514386 U JP 3514386U JP 3514386 U JP3514386 U JP 3514386U JP S62149278 U JPS62149278 U JP S62149278U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- power supply
- startup
- pulse
- switching
- 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
- 230000004913 activation Effects 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 claims 1
- 239000000284 extract Substances 0.000 claims 1
- 238000013021 overheating Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図はこの考案のスイツチング電源の構成を
示すブロツク図、第２図はこの考案の実施例であ
るスイツチング電源の回路図である。
１―パルス発生ＩＣ（パルス発生回路）、２―
ＦＥＴ（スイツチング素子）、３―起動時電源回
路、４―動作時電源回路、５―サーモスタツト（
保護回路）、６―パルスリミツト作動回路。
FIG. 1 is a block diagram showing the configuration of a switching power supply according to this invention, and FIG. 2 is a circuit diagram of a switching power supply according to an embodiment of this invention. 1-Pulse generation IC (pulse generation circuit), 2-
FET (switching element), 3-startup power supply circuit, 4-operation power supply circuit, 5-thermostat (
protection circuit), 6-pulse limit activation circuit.
Claims (1)
回路に、パルスリミツトを働かせることにより強
制的にパルスを停止させることができるパルスリ
ミツト作動回路を接続し、かつ、このパルス発生
回路の電源として、起動時に直流電源から定電圧
を取り出して起動電圧として供給する起動時電源
回路と、起動後にスイツチング出力から帰還させ
て動作電圧を供給する動作時電源回路とを有する
スイツチング電源において、 スイツチング素子やこれより負荷側の過熱、過
電流または過電圧等の異常を検出すると回路をし
や断する保護回路を起動時電源回路とパルス発生
回路との間に挿入し、かつ、パルスリミツト作動
回路がパルスリミツトを働かせない状態を維持す
るための動作電圧をこの保護回路を介した起動時
電源回路から供給するようにしたことを特徴とす
るスイツチング電源。[Claims for Utility Model Registration] A pulse limit operating circuit that can forcibly stop the pulse by applying a pulse limit is connected to a pulse generation circuit that applies pulses to a switching element, and as a power source for this pulse generation circuit. In a switching power supply, which has a startup power supply circuit that extracts a constant voltage from a DC power supply at startup and supplies it as a startup voltage, and an operation power supply circuit that feeds back a constant voltage from a switching output after startup and supplies an operating voltage, switching elements and A protection circuit that shuts off the circuit when an abnormality such as overheating, overcurrent, or overvoltage is detected on the load side is inserted between the startup power supply circuit and the pulse generation circuit, and the pulse limit activation circuit does not activate the pulse limit. A switching power supply characterized in that an operating voltage for maintaining the state is supplied from a power supply circuit at startup via this protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3514386U JPS62149278U (en) | 1986-03-11 | 1986-03-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3514386U JPS62149278U (en) | 1986-03-11 | 1986-03-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62149278U true JPS62149278U (en) | 1987-09-21 |
Family
ID=30844362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3514386U Pending JPS62149278U (en) | 1986-03-11 | 1986-03-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62149278U (en) |
-
1986
- 1986-03-11 JP JP3514386U patent/JPS62149278U/ja active Pending
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