JPS6438878U

JPS6438878U -

Info

Publication number: JPS6438878U
Application number: JP13444787U
Authority: JP
Priority date: 1987-09-02
Filing date: 1987-09-02
Publication date: 1989-03-08

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例の水平偏向位置調
整回路を示す接続図、第２図は従来の水平偏向位
置調整回路を示す接続図である。１は水平出力トランジスタ、２はダンパーダイ
オード、３は共振コンデンサ、４は水平出力トラ
ンス、５は水平偏向コイル、６ａ，６ｂはダイオ
ード、８ａは第１のトランジスタ、８ｂは第２の
トランジスタ、９ａ，９ｂは可変抵抗器、１０は
チヨークコイル、１１は切換えスイツチ、１３は
フオトカプラ、２０は整流回路、２１はＳ字補正
コンデンサ。なお、図中、同一符号は同一または
相当部分を示す。 FIG. 1 is a connection diagram showing a horizontal deflection position adjustment circuit according to an embodiment of this invention, and FIG. 2 is a connection diagram showing a conventional horizontal deflection position adjustment circuit. 1 is a horizontal output transistor, 2 is a damper diode, 3 is a resonant capacitor, 4 is a horizontal output transformer, 5 is a horizontal deflection coil, 6a and 6b are diodes, 8a is a first transistor, 8b is a second transistor, 9a, 9b is a variable resistor, 10 is a choke coil, 11 is a changeover switch, 13 is a photocoupler, 20 is a rectifier circuit, and 21 is an S-shaped correction capacitor. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Scope of utility model registration request]

A horizontal deflection coil through which a sawtooth current flows depending on whether the horizontal output transistor is turned on or off, a rectifier circuit that rectifies the output voltage of the horizontal output transformer to obtain a voltage relative to the power supply/voltage, and the horizontal deflection described above. a first transistor connected between one end of the coil and a positive output end of the rectifier circuit; a second transistor connected between the one end of the horizontal deflection coil and a negative output end of the rectifier circuit; These first
and a changeover switch connected to the base of the second transistor, which is selectively connected to the bases of the first and second transistors by switching the changeover switch, and has a plurality of transistors having different resistance values. A variable resistor is provided, and by operating the variable resistor, the base currents of the first and second transistors are controlled to differentially operate the first and second transistors, and the horizontal position adjustment current is controlled. The horizontal position adjustment current is applied to the horizontal deflection coil by controlling the direction and magnitude of the current, and by selectively connecting the plurality of variable resistors to the bases of the first and second transistors. A horizontal deflection position adjustment circuit characterized in that the control range of the horizontal deflection position adjustment circuit can be changed.