JPH036367U - - Google Patents
Info
- Publication number
- JPH036367U JPH036367U JP6583889U JP6583889U JPH036367U JP H036367 U JPH036367 U JP H036367U JP 6583889 U JP6583889 U JP 6583889U JP 6583889 U JP6583889 U JP 6583889U JP H036367 U JPH036367 U JP H036367U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- circuit
- ray tube
- cathode ray
- vertical oscillation
- 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
- 230000010355 oscillation Effects 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Details Of Television Scanning (AREA)
Description
図は本考案に係るブラウン管保護回路の一実施
例を示すブロツク回路図である。
１……垂直発振回路、３……垂直偏向ドライブ
回路、５……垂直偏向出力回路、７……水平偏向
出力回路、９……安定化電源回路、１１……第１
の電源回路、１３……第２の電源回路、Ｂ１……
第１の電源電圧、Ｂ２……第２の電源電圧、Ｃ１
〜Ｃ５……コンデンサ、Ｄ１，Ｄ２……ダイオー
ド、Ｄ３……逆流防止用ダイオード、Ｄ４……ツ
エナーダイオード、Ｌｈ……水平偏向コイル、Ｌ
ｖ……垂直偏向コイル。
The figure is a block circuit diagram showing an embodiment of the cathode ray tube protection circuit according to the present invention. DESCRIPTION OF SYMBOLS 1...Vertical oscillation circuit, 3...Vertical deflection drive circuit, 5...Vertical deflection output circuit, 7...Horizontal deflection output circuit, 9...Stabilized power supply circuit, 11...First
power supply circuit, 13...second power supply circuit, B1 ...
First power supply voltage, B 2 ... Second power supply voltage, C 1
~ C5 ... Capacitor, D1 , D2 ... Diode, D3 ... Backflow prevention diode, D4 ... Zener diode, Lh... Horizontal deflection coil, L
v...Vertical deflection coil.
Claims (1)
発振する垂直発振回路と、 前記ブラウン管を水平偏向動作させる水平偏向
出力回路のフライバツクトランスからの出力パル
ス信号を整流して得られた第１の電源を前記垂直
発振回路に供給する第１の電源回路と、 前記水平偏向出力回路の動作に連動しない第２
の電源を前記水平偏向出力回路の動作停止時に前
記垂直発振回路に供給する第２の電源回路と、 を具備してなることを特徴とするブラウン管保
護回路。 (2) 前記第１の電源が逆流防止用ダイオードを
介して前記垂直発振回路に供給されるとともに、
逆方向挿入されたツエナーダイオードを介して前
記第２の電源が前記垂直発振回路に供給されてな
る請求項１記載のブラウン管保護回路。 (3) 前記第１の電源電圧より前記第２の電源電
圧が高く設定されてなる請求項２記載のブラウン
管保護回路。 (4) 前記第１の電源電圧をＢ１、前記第２の電
源電圧をＢ２、前記逆流防止用ダイオードの順方
向電圧をＶｄ、前記ツエナーダイオードの逆方向
電圧をＶｚ、前記垂直発振回路の動作可能最低電
圧をＶａとすると、 〔Ｂ２−Ｖｚ＜Ｂ１−Ｖｄ〕および 〔Ｂ２−Ｖｚ＞Ｖａ〕 に設定されてなる請求項３記載のブラウン管保
護回路。[Claims for Utility Model Registration] (1) Rectification of output pulse signals from a flyback transformer of a vertical oscillation circuit that oscillates signals necessary for vertical deflection operation of a cathode ray tube and a horizontal deflection output circuit that causes horizontal deflection operation of the cathode ray tube. a first power supply circuit that supplies the first power obtained by the above to the vertical oscillation circuit; and a second power supply circuit that is not interlocked with the operation of the horizontal deflection output circuit.
a second power supply circuit that supplies power to the vertical oscillation circuit when the horizontal deflection output circuit stops operating. (2) the first power source is supplied to the vertical oscillation circuit via a backflow prevention diode;
2. The cathode ray tube protection circuit according to claim 1, wherein said second power source is supplied to said vertical oscillation circuit via a Zener diode inserted in a reverse direction. (3) The cathode ray tube protection circuit according to claim 2, wherein the second power supply voltage is set higher than the first power supply voltage. (4) The first power supply voltage is B 1 , the second power supply voltage is B 2 , the forward voltage of the reverse current prevention diode is Vd, the reverse voltage of the Zener diode is Vz, and the vertical oscillation circuit is 4. The cathode ray tube protection circuit according to claim 3, wherein the lowest operable voltage is set to [ B2 -Vz< B1 -Vd] and [ B2 -Vz>Va].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6583889U JPH036367U (en) | 1989-06-07 | 1989-06-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6583889U JPH036367U (en) | 1989-06-07 | 1989-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH036367U true JPH036367U (en) | 1991-01-22 |
Family
ID=31598030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6583889U Pending JPH036367U (en) | 1989-06-07 | 1989-06-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH036367U (en) |
-
1989
- 1989-06-07 JP JP6583889U patent/JPH036367U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0586145B2 (en) | ||
| JPH036367U (en) | ||
| US6504733B1 (en) | Switch mode power supply | |
| EP1458184A1 (en) | Arrangement comprising a microprocessor, a demagnetization circuit and a switched mode power supply, and a respective display unit | |
| JP2000023458A (en) | Switching power supply unit | |
| JPH05211618A (en) | Deflection circuit | |
| JPH0345985B2 (en) | ||
| JPS587734Y2 (en) | television receiver | |
| JPH0110055Y2 (en) | ||
| JPH0117889Y2 (en) | ||
| JPS581986U (en) | Horizontal scanning width constant device | |
| JPH0195868U (en) | ||
| JPS586464U (en) | vertical output device | |
| JPS63200965U (en) | ||
| JPH01180887U (en) | ||
| JPH0159367U (en) | ||
| JPH0414439U (en) | ||
| JPS6091772A (en) | Drive circuit of flyback transformer | |
| JPH0351556U (en) | ||
| JPS62173877U (en) | ||
| JPS6195164U (en) | ||
| JPH0485961U (en) | ||
| JPH0269391U (en) | ||
| JPH01198275A (en) | Self-excited switching power source | |
| JPS6114573U (en) | CRT horizontal output circuit |