JPS59171366A - Horizontal amplitude adjusting device - Google Patents

Abstract

PURPOSE:To adjust the horizontal amplitude while keeping a high voltage to a constant value by detecting a change in a high voltage attended with the adjustment of horizontal amplitude from a high voltage breeder dividing resistor and controlling a varactor circuit of a horizontal deflection circuit by the detected output. CONSTITUTION:In decreasing an inductance of a horizontal amplitude adjusting coil 9 so as to increase the horizontal amplitude, the high voltage is increased and a detected voltage at a point (a) is also increased. Since a prescribed bias is applied to an operational amplifier 18 by a +E2 power supply, when the detected potential of the point (a) is increased, a difference between a non- inverting input terminal and an inverting input terminal is amplified in the way of non-inversion by the ratio of resistors 20, 21 and applied to a transistor (TR) 14. Thus, the resonance capacitance by resonance capacitors 4, 13 is increased so as to decrease a high voltage generated in the secondary winding of a flyback transformer 5. Thus, the fluctuation in high voltage is suppressed and the horizontal amplitude is adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF APPLICATION OF THE PRODUCT V,', 1-1 The present invention (f; 1, horizontal vibration 11 used in a display 1 monitor that uses all cathode ray tubes) adjustment device f.

Construction of a conventional example and its problems - 1 First, a horizontal vibration [1] adjusting device used in a conventional display monitor is shown in FIG. 1 and will be explained. In the figure, 1 is a horizontal output drive circuit, 2Q horizontal output l transistor, 3 is a damper W, =A-do, 4 is a resonance capacitor, 5i-Flybar Kutra/S,
6 ttj: , 4i +'tE rectification da'fJ-t・
, Clear HI investigation to the line tube, 8 (1 water deflection Yo-heku, 9 to 1 water (// stationary adjustment coil, 10 Water drop linearity coil, 111 steep pink non-yon correction circuit, 12
fdS'''4 correction J■1:7 capacitor.

Here, 1 ["1's horizontal amplitude adjustment 4'l: V
Let me explain about C. There are many cases where a display monitor has various different types of display signals. Also, the display 1tJi of the screen at C may be folded within the water scanning 11J1 interval (C) due to the nearby navy frequency.

As shown in the figure, the power of B is greater than the period indicated by b.

Therefore, when such a 1-ce display signal L↑1 is displayed on both sides of the 4-way display monitor, the horizontal amplitude of the displayed screen will be different like /, b/. If you are using the input signal 1 (if you are using the 1st monitor, you will need to adjust the horizontal amplitude accordingly and set the horizontal amplitude to the regular price). be.

In Fig. 1, in the conventional circuit, +1, horizontal vibration d] adjustment coil 9 has its A circumference adjusted to -1), but its adjustment f: rC gives water 1,000 + j J: change. () - If the deflection circuit's Jl, : the inductance of the deflection circuit changes - 'ru/comni, 1-71 [■ D type! r: changes and -2 [There is a drawback that...

Purpose of the present invention: 1. To solve the drawbacks of the conventional art. Then, the horizontal vibration is 1■ without changing the high pressure fig t', 'fl.
1. Our objective is to provide a complete horizontal amplitude adjustment device that can be adjusted.

According to the present invention, Pf Aonari's defense is to detect the change in Ichikawa from the Bruder division resistor, and to use this detection output. By controlling the variable capacitance provided in the 11-wave circuit V in the horizontal deflection circuit [1], the horizontal deflection is controlled while suppressing the change in the high 1-to-electric current 1-E and keeping it constant. It has a V-shape so that the width can be adjusted.

Real ellipse example A;? , below, Fig. 3 R An example of the present invention (horizontal vibration [
1,+ill Show an example of the [[]i path of the q bottom device C
ft, Akirasu Z).

In Figure 3, each part of 1 to 12 (/: 1 in Figure 1 is the same as ffL and -1, so the explanation will be omitted. 13 (d and Lii Tl -1 supplementary 11 horn care jl-114 (-4-: Jl: Used for shaking I
The JII U//star'C1 resistor'16 is connected in series with the resonance auxiliary =l/de/zer 13.Furthermore, the 16
,176・Divide resistor for height bleeder, child dividing point a
Detect the 2' conversion of 1 F1 from the point with Ichikawa 4' dynamic binding 7, add the detection output to the operational terminal 18, electrolytic corrosion 19, tK resistance 20 + 21 and 7C setting L/'
i electric 1] [ and [ comparison L7, its error output (/i':
, ): Base city of Retran/Star 14 IT:, ke1li
By controlling the resonant container of the resonant circuit 1-
ru, ■two (f koshi 7..

In such a configuration, it is now adjusted for the input bow as shown in FIG. 2 fa).'1. When the input signal as shown in (b) of the same figure is given, 1 ton of water is added to the cut barrel.
-i] is small and h is small, so that water 31' of A is shaken "1" ((Water 1'N6 [13 Adjustment Monthly 1 coil 9 tunes V) An example of operation will be explained.

In FIG. 3, when V is adjusted in the direction of decreasing the innoctor/kN of the horizontal vibration riJ adjustment coil 9 so as to increase the water I' vibration rjJ, the 11. : A of the oscillating circuit / the ductance decreases / the high voltage electric current a= becomes 10 Jjl-. For this reason, 16,1
The detection rate of point a divided by γ also increases. In the operation terminal 18, the detection signal of point a is supplied to the non-inverting input terminal, and the inverting input terminal (-
In display) C, a constant bias is applied to the +E2 power supply, so when the detection potential LL at point a rises,
The balance between the non-inverting input terminal (indicated by "-") and the inverting input terminal is distorted, and the difference between the non-inverting input terminal (indicated by "-") and the difference between the
) is non-invertingly amplified and applied to the transistor 14.

Therefore, the internal I/P of the transistor 14 decreases, and the resonant capacitance constituted by the resonant coders 4 and 13 increases substantially, causing the flyback transformer to
It operates in the direction of reducing the high pressure and load generated in the secondary winding. In this way, fluctuations in high voltage and high current are suppressed and kept constant, and the horizontal amplitude can be adjusted.

1. When adjusting to reduce the total horizontal amplitude, conversely, 1. , t:y, the operation opposite to that of Mi2 is performed;
t+,, -? 2. You can adjust the IJ sub-adjustment without causing any changes in high pressure.

Effects of the Invention As described above, according to the present invention, even if the water i1 is fully adjusted horizontally by one coil of one width HH+M on a display monitor, etc., the high-voltage electric current U' It is possible to adjust horizontal vibration (11) while suppressing changes in horizontal vibration and keeping it constant.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of a conventional horizontal vibration rl-,+ adjustment device.
Figure 2 is a 7J type and F side view showing changes in the water vibration value on both sides due to the human input signal input to the display monitor, and Figure 3 is a side view of an embodiment of the + invention. FIG. 3 is a circuit diagram of a horizontal amplitude adjustment device. 4...Resonance co/de/male, 6...Fried back transformer, 6...High voltage rectifier diode,
7...Cathode ray tube, 8...Water 1' deflection yoke, 9...Horizontal vibration rl adjustment coil, 13...
・Auxiliary connector/capacitor for both 4 pins, 14...Tou/distor, 16...Resistance, 16゜17...High [I-
Divided resistor for nib reader, No. 18 verational knob, 19... Power supply, 20. 21・
·····resistance. Names of the 111 people Ben Sotoshi Satoshi Nakao Male 7 minutes 1 person Diagram 2! zu:7'l-)no-zuzu□ ■ 1 1 1

Claims (1)

[Claims] Water 31'1 Changes in high-use power associated with the adjustment of the monthly 1 coil - Breeder Jl' connected to the 11 circuit! 1
From the dividing resistor to the electrical and dynamic parts! 2, =- (detected, and by this detection output, -) is set in the horizontal deflection circuit (1) in the horizontal deflection circuit. 2) Control the fluctuation of the water to suppress the fluctuation of the table.