JPS6266465U - - Google Patents
Info
- Publication number
- JPS6266465U JPS6266465U JP15882085U JP15882085U JPS6266465U JP S6266465 U JPS6266465 U JP S6266465U JP 15882085 U JP15882085 U JP 15882085U JP 15882085 U JP15882085 U JP 15882085U JP S6266465 U JPS6266465 U JP S6266465U
- Authority
- JP
- Japan
- Prior art keywords
- current
- circuit
- synchronization
- constant current
- collapse
- 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
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Picture Signal Circuits (AREA)
Description
第１図は、本考案の一実施例を示す回路図、第
２図は同期つぶれが生じることを説明する為の回
路図、第３図は従来の同期つぶれ防止回路を示す
回路図、第４図は第１図の具体回路例を示す回路
図、及び第５図は第１図の別の具体回路例を示す
回路図である。
主な図番の説明、１５……入力結合コンデンサ
、２０……第１定電流回路、２１……第２定電流
回路。
Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a circuit diagram for explaining the occurrence of synchronization loss, Fig. 3 is a circuit diagram showing a conventional synchronization loss prevention circuit, and Fig. 4 is a circuit diagram showing an example of the present invention. 1 is a circuit diagram showing the specific circuit example of FIG. 1, and FIG. 5 is a circuit diagram showing another specific circuit example of FIG. 1. Explanation of main drawing numbers, 15... Input coupling capacitor, 20... First constant current circuit, 21... Second constant current circuit.
Claims (1)
止する為の同期つぶれ防止回路であつて、クラン
プ時に入力結合コンデンサに流れる電流を検出し
て、該電流に応じた値の電流を発生する第１定電
流回路と、前記第１定電流回路の出力電流に応じ
てクランプ電流を吸引する第２定電流回路とから
成り、前記入力結合コンデンサに流れる電流を全
て、第２定電流回路に吸引することにより、前記
同期信号のつぶれを防止する様にしたことを特徴
とする同期つぶれ防止回路。 A first constant current circuit, which is a synchronization collapse prevention circuit for preventing synchronization signal collapse during synchronization clamping, detects the current flowing through the input coupling capacitor during clamping, and generates a current with a value corresponding to the detected current. and a second constant current circuit that sucks a clamp current according to the output current of the first constant current circuit, and by sucking all the current flowing through the input coupling capacitor into the second constant current circuit, A synchronization collapse prevention circuit characterized by preventing collapse of a synchronization signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15882085U JPS6266465U (en) | 1985-10-17 | 1985-10-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15882085U JPS6266465U (en) | 1985-10-17 | 1985-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6266465U true JPS6266465U (en) | 1987-04-24 |
Family
ID=31082666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15882085U Pending JPS6266465U (en) | 1985-10-17 | 1985-10-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6266465U (en) |
-
1985
- 1985-10-17 JP JP15882085U patent/JPS6266465U/ja active Pending
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