JPS58138179A - Horizontal deflection and high-voltage generating device - Google Patents
Horizontal deflection and high-voltage generating deviceInfo
- Publication number
- JPS58138179A JPS58138179A JP2142382A JP2142382A JPS58138179A JP S58138179 A JPS58138179 A JP S58138179A JP 2142382 A JP2142382 A JP 2142382A JP 2142382 A JP2142382 A JP 2142382A JP S58138179 A JPS58138179 A JP S58138179A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- deflecting
- horizontal
- high voltage
- transistor
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
- H04N3/185—Maintaining dc voltage constant
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は水平出力トランジスタのコレクタ出力端ラフラ
イバックトランスの一次巻線に接続した一体型の水平偏
向・高圧発生装置に関するもので、高圧負荷変動にかか
わらず高圧および水平偏向振幅をほぼ一定に保持しよう
とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an integrated horizontal deflection/high voltage generator connected to the primary winding of a rough flyback transformer at the collector output terminal of a horizontal output transistor, and the present invention relates to an integrated horizontal deflection/high voltage generator that is connected to the primary winding of a rough flyback transformer to maintain high voltage and horizontal deflection regardless of high voltage load fluctuations. This attempts to keep the amplitude approximately constant.
従来のこの種水平偏向・高圧発生装置の一例を第１図に
示す。図中１は水平出力トランジスタ、２はフライバッ
クトランス、３は偏向コイル、４゜５はダンパーダイオ
ード、６，７は共振用コンデンサであり、ダンパーダイ
オード４．５の接続点へはインダクタンス８を介して端
子９よりサイドピンクッション補正用パラボラ電圧を有
する直流電圧を加えている。この回路はブリッジ型水平
偏向回路としてよく知られているものであり、その動作
説明は省略する。An example of a conventional horizontal deflection/high pressure generator of this type is shown in FIG. In the figure, 1 is a horizontal output transistor, 2 is a flyback transformer, 3 is a deflection coil, 4.5 is a damper diode, 6 and 7 are resonance capacitors, and the connection point of damper diode 4.5 is connected via inductance 8. A DC voltage having a parabolic voltage for side pincushion correction is applied from terminal 9. This circuit is well known as a bridge type horizontal deflection circuit, and a description of its operation will be omitted.
この第１図の回路は高圧負荷の変動により水平偏向振幅
が全振幅の数％変化し、また高圧回路の内部インピーダ
ンスも２〜３ＭΩと比較的大きくなるという欠点がある
。この欠点を除去するために水平偏向回路と高圧発生回
路を別々にした分離型もあるが１回路構成が複雑で高価
になるという欠点がある。The circuit shown in FIG. 1 has the drawback that the horizontal deflection amplitude changes by several percent of the total amplitude due to fluctuations in the high voltage load, and the internal impedance of the high voltage circuit also becomes relatively large, at 2 to 3 MΩ. In order to eliminate this drawback, there is a separate type in which the horizontal deflection circuit and the high voltage generation circuit are separated, but the disadvantage is that the single circuit configuration is complicated and expensive.
本発明は上記従来の欠点を除去するもので、高圧の負荷
変動を検出する回路を設け、この検出出力によって高圧
の変動および水平偏向振幅の変動を抑えるようにしたも
のである。The present invention eliminates the above-mentioned conventional drawbacks by providing a circuit for detecting high-voltage load fluctuations, and suppressing high-voltage fluctuations and horizontal deflection amplitude fluctuations using this detection output.
以下その一実施例を第２図を用いて説明する。An example of this will be described below with reference to FIG.
なお図中第１図のものと同じ機能を有する素子には同一
番号を付しており、ここではそれ以外の構成について説
明する。図中、１０．１１はフライバックトランス２か
らの高圧出力を分圧する分圧抵抗、１２は差動増幅器、
基準電圧源等よりなる誤差検出回路で、フライバックト
ランス２からの高圧出力電圧は抵抗１０．ＴＩで分圧さ
れてこの誤差検出回路１２０入力端に加えられる。１３
は電源電圧制御用トランジスタで、コレクタをフライバ
ックトランス２の一次巻線に、エミッタを＋Ｂ、電圧源
におのおの接続しており、ベースに誤差検出回路１２の
出力電圧が加えられる。１４゜１５は誤差検出回路１２
の出力電圧を分圧する抵抗、１６．１７は水平振幅制御
用トランジスタで、前記抵抗１４．１５で分圧された検
出出力電圧が加えられる。そして、トランジスタ１７の
出力は抵抗１８、インダクタンス８を介してダイオード
４と６の接続点に加えられる。In the figure, elements having the same functions as those in FIG. 1 are denoted by the same numbers, and the rest of the structure will be described here. In the figure, 10.11 is a voltage dividing resistor that divides the high voltage output from the flyback transformer 2, 12 is a differential amplifier,
The error detection circuit consists of a reference voltage source, etc., and the high voltage output voltage from the flyback transformer 2 is connected to a resistor 10. The voltage is divided by TI and applied to the input terminal of this error detection circuit 120. 13
is a power supply voltage control transistor, which has a collector connected to the primary winding of the flyback transformer 2, an emitter connected to +B and a voltage source, and the output voltage of the error detection circuit 12 is applied to the base. 14°15 is the error detection circuit 12
A resistor 16.17 is a horizontal amplitude control transistor to which the detected output voltage divided by the resistor 14.15 is applied. The output of the transistor 17 is then applied to the connection point between the diodes 4 and 6 via a resistor 18 and an inductance 8.
次に動作を説明する。Next, the operation will be explained.
いま、陰極線管１９に流れる電流、すなわち高圧負荷電
流が増大すると、出力端子２ｏの電圧が低下し、抵抗１
０．１１を介して誤差検出回路１２が働らき、トランジ
スタ１３のベース電圧を高くする。この結果、フライバ
ックトランス２へ供給される電源電圧が高くなって高圧
の低下を防ぐ・逆に高圧負荷電流が減少した場合は上記
各回路が逆に働らき高圧の増大を防ぐ。すなわち、高圧
負荷電流の変動にかかわらず高圧をほぼ一定に保つこと
ができる。Now, when the current flowing through the cathode ray tube 19, that is, the high voltage load current increases, the voltage at the output terminal 2o decreases, and the resistor 1
0.11, the error detection circuit 12 operates and raises the base voltage of the transistor 13. As a result, the power supply voltage supplied to the flyback transformer 2 increases to prevent a drop in high voltage. Conversely, when the high voltage load current decreases, each of the circuits described above works in reverse to prevent an increase in high voltage. That is, the high voltage can be kept substantially constant regardless of fluctuations in the high voltage load current.
そして、以上の動作と並行して下記のごとくトランジス
タ１６，１了よりなる回路が動作して偏向コイル３に流
れる偏向電流を一定に保つ。さて第２図において、端子
９の電圧によって偏向コイル３を流れる偏向電流が変化
しても高圧出力電圧は変化しないことは従来より知られ
ている。通常。In parallel with the above operation, a circuit consisting of transistors 16 and 1 operates as described below to keep the deflection current flowing through the deflection coil 3 constant. Now, as shown in FIG. 2, it is conventionally known that even if the deflection current flowing through the deflection coil 3 changes depending on the voltage at the terminal 9, the high voltage output voltage does not change. usually.
端子２１にはサイドピンクッション補正用パラボラ電圧
が印加され、同時に直流電圧を変えることにより水平振
幅の調整を行うようにしている。いま、高圧負荷電流が
増大したとすると、前述のようにトランジスタ１３０ベ
ース電圧は増大するが。A parabolic voltage for side pincushion correction is applied to the terminal 21, and at the same time, the horizontal amplitude is adjusted by changing the DC voltage. Now, if the high-voltage load current increases, the base voltage of the transistor 130 increases as described above.
その電圧は抵抗１４．１５で分圧されトランジスタ１６
のベースに加えられているため、端子９の電圧も増大し
、偏向コイル３に流れる偏向電流を減少させる。逆に高
圧負荷電流が減少した場合、上記と逆に動作し、結局偏
向電流は一定に保たれる。The voltage is divided by resistors 14 and 15 and transistor 16
, the voltage at terminal 9 also increases, reducing the deflection current flowing through deflection coil 3. Conversely, when the high-voltage load current decreases, the above operation is reversed and the deflection current is eventually kept constant.
以上述べたように本構成によれば、高圧負荷電流による
高圧の変動をフライバックトランスに供給する電源電圧
を変化させて補正し、さらにそれに伴って発生する偏向
電流の変化を端子９の電圧を電源電圧と同一方向に変化
させることで補正することにより、高圧および偏向電流
の安定な水平偏向・高圧発生装置を得ることができる。As described above, according to this configuration, fluctuations in high voltage due to high voltage load current are corrected by changing the power supply voltage supplied to the flyback transformer, and changes in deflection current that occur accordingly are corrected by changing the voltage at terminal 9. By correcting the voltage by changing it in the same direction as the power supply voltage, it is possible to obtain a horizontal deflection/high voltage generator with stable high voltage and deflection current.
このように本発明によれば、水平偏向・高圧発生回路を
含む一体型構成であるにもかかわらず。Thus, according to the present invention, despite the integrated structure including the horizontal deflection and high voltage generation circuits.
高圧負荷変動に対して高圧および偏向電流の安定した高
精能、低コストの装置を提供することができる。It is possible to provide a high-precision, low-cost device that maintains stable high voltage and deflection current against high voltage load fluctuations.
第１図は従来例における水平偏向・高圧発生装置の回路
図、第２図は本発明の一実施例における水平偏向・高圧
発生装置の回路図である。
１・・・・・・水平出力トランジスタ、２・・川・フラ
イバックトランス、３・・・・・・偏向コイル、４，５
・・・・・−ダンパーダイオード、６，７・・・・・・
共振コンデンサ。
１２・・・・・・誤差検出回路、１３・・・・・・電源
電圧制御用トランジスタ、１８．１７・・・・・・水平
振幅制御用トランジスタ。FIG. 1 is a circuit diagram of a conventional horizontal deflection/high pressure generator, and FIG. 2 is a circuit diagram of a horizontal deflection/high pressure generator according to an embodiment of the present invention. 1...Horizontal output transistor, 2...River/flyback transformer, 3...Deflection coil, 4,5
・・・・・・－Damper diode, 6, 7・・・・・・
resonant capacitor. 12...Error detection circuit, 13...Transistor for power supply voltage control, 18.17...Transistor for horizontal amplitude control.
Claims (1)
ンス、複数個のダンパーダイオードを備え、前記ダンパ
ーダイオードの接続点へ水平振幅調整ならびに水平ビン
クッション補正電圧を加えるようにするとともに、高圧
出力電圧の変動を検出し基準値と比較する誤差検出回路
と、フライバックトランスを介して水平出力トランジス
タに供給する電源電圧を制御する手段を設け、前記誤差
検出回路の出力電圧を前記電源電圧制御手段へ供給する
と同時に前記出力電圧によって前記ダンパーダイオード
の接続点の電圧を変化させ、高圧負荷変動に対して高圧
および偏向電流を安定化せしめることを特徴とする水平
偏向・高圧発生装置。It includes a horizontal output transistor, a deflection coil, a flyback transformer, and a plurality of damper diodes, and applies horizontal amplitude adjustment and horizontal bin cushion correction voltage to the connection point of the damper diodes, and also detects fluctuations in the high voltage output voltage. An error detection circuit for comparing with a reference value and a means for controlling a power supply voltage supplied to the horizontal output transistor via a flyback transformer are provided, and the output voltage of the error detection circuit is supplied to the power supply voltage control means at the same time as the output voltage. A horizontal deflection/high voltage generator characterized in that the voltage at the connection point of the damper diode is changed depending on the voltage, and the high voltage and deflection current are stabilized against high voltage load fluctuations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2142382A JPS58138179A (en) | 1982-02-12 | 1982-02-12 | Horizontal deflection and high-voltage generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2142382A JPS58138179A (en) | 1982-02-12 | 1982-02-12 | Horizontal deflection and high-voltage generating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58138179A true JPS58138179A (en) | 1983-08-16 |
| JPS6350909B2 JPS6350909B2 (en) | 1988-10-12 |
Family
ID=12054583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2142382A Granted JPS58138179A (en) | 1982-02-12 | 1982-02-12 | Horizontal deflection and high-voltage generating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58138179A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6230463U (en) * | 1985-08-06 | 1987-02-24 | ||
| US4823052A (en) * | 1987-06-10 | 1989-04-18 | Hitachi, Ltd. | Horizontal deflection high-voltage circuit |
| JPH0320572U (en) * | 1989-07-05 | 1991-02-28 | ||
| CN112187249A (en) * | 2019-07-03 | 2021-01-05 | 瑞昱半导体股份有限公司 | Bias circuit system and bias method |
-
1982
- 1982-02-12 JP JP2142382A patent/JPS58138179A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6230463U (en) * | 1985-08-06 | 1987-02-24 | ||
| US4823052A (en) * | 1987-06-10 | 1989-04-18 | Hitachi, Ltd. | Horizontal deflection high-voltage circuit |
| JPH0320572U (en) * | 1989-07-05 | 1991-02-28 | ||
| CN112187249A (en) * | 2019-07-03 | 2021-01-05 | 瑞昱半导体股份有限公司 | Bias circuit system and bias method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6350909B2 (en) | 1988-10-12 |
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