JPS6127492U - Overvoltage protection circuit - Google Patents
Overvoltage protection circuitInfo
- Publication number
- JPS6127492U JPS6127492U JP11173784U JP11173784U JPS6127492U JP S6127492 U JPS6127492 U JP S6127492U JP 11173784 U JP11173784 U JP 11173784U JP 11173784 U JP11173784 U JP 11173784U JP S6127492 U JPS6127492 U JP S6127492U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- high frequency
- frequency transformer
- output
- overvoltage protection
- 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
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の自励式スイッチング定電圧回路を示す回
路図、第２図は本考案の一実施例を示す回路図である。
一， ２・・・整流器、３・・・コンデンサ、４・・・
高周波トランス、５・・・ダイオード、６・・・コンデ
ンサ、９・・・絶縁素子、１２・・・自励用ドライブ回
路、１３・・・起動世抵抗、７１５・・・過電圧保護回
路、１６・・・整流回路。FIG. 1 is a circuit diagram showing a conventional self-excited switching constant voltage circuit, and FIG. 2 is a circuit diagram showing an embodiment of the present invention. 1, 2... Rectifier, 3... Capacitor, 4...
High frequency transformer, 5... Diode, 6... Capacitor, 9... Insulating element, 12... Drive circuit for self-excitation, 13... Starting resistance, 715... Overvoltage protection circuit, 16... ... Rectifier circuit.
Claims (1)
ルとスイッチング素子との直列回路に供給されると共に
、上記スイッチング素子が該高周波トランスの１次側帰
還コイルより電圧が供給され、プロツキング発振をする
ように構成され、上記高周波トランスの２次側コイルに
接続された整流回路に所望の直流出力電圧が取出される
自励式スイッチング型定電圧回路において、高周波トラ
ンスの１次側帰還コイルより出力電圧に比例した−電圧
を取出すことによって出力電圧の異常上昇を検知し、自
励式スイッチング動作を停止する手段とを備えたことを
特徴とする過電圧保護回路。An unstable DC input voltage is supplied to a series circuit of the primary main coil of the high frequency transformer and a switching element, and the switching element is supplied with voltage from the primary feedback coil of the high frequency transformer to prevent blocking oscillation. In a self-excited switching type constant voltage circuit configured to output a desired DC output voltage to a rectifier circuit connected to the secondary coil of the high frequency transformer, the output voltage is output from the primary feedback coil of the high frequency transformer. 1. An overvoltage protection circuit comprising means for detecting an abnormal rise in output voltage by extracting a voltage proportional to - and stopping a self-excited switching operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11173784U JPS6127492U (en) | 1984-07-25 | 1984-07-25 | Overvoltage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11173784U JPS6127492U (en) | 1984-07-25 | 1984-07-25 | Overvoltage protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6127492U true JPS6127492U (en) | 1986-02-19 |
Family
ID=30670810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11173784U Pending JPS6127492U (en) | 1984-07-25 | 1984-07-25 | Overvoltage protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6127492U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63690U (en) * | 1986-06-20 | 1988-01-06 | ||
| JPS63186559A (en) * | 1987-01-26 | 1988-08-02 | Origin Electric Co Ltd | Dc high voltage generator and controlling method |
-
1984
- 1984-07-25 JP JP11173784U patent/JPS6127492U/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63690U (en) * | 1986-06-20 | 1988-01-06 | ||
| JPS63186559A (en) * | 1987-01-26 | 1988-08-02 | Origin Electric Co Ltd | Dc high voltage generator and controlling method |
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