Inductor-adjustable apparatus

Abstract

The invention provides an inductance adjustable device, comprising a first inductance and a second inductance which can generate mutual inductance effect; the first pin of the first inductance can be electrically connected with the third pin or the fourth pin of the second inductance; the first terminal of the inductance adjustable device can be electrically connected with the third pin or the fourth pin of the second inductance; the second terminal of the inductance adjustable device is electrically connected with the second pin of the first inductance; the inductance adjustable device can simply change the connection relationship between the first inductance and the second inductance according to the requirement, realizes the adjustment of inductance quantity, has simple structure, hardly increases manufacture cost, has convenient usage, and does not affect production efficiency.

Description

technical field [0001] The invention relates to inductance, in particular to an adjustable inductance device. Background technique [0002] Inductor is a very commonly used electronic component. Usually the inductance of the inductor is constant. In some applications, it is necessary to change the inductance of the inductor. A typical example is the use of inductors in cathode ray tube (CRT) televisions. In an ultra-thin picture tube TV, the thickness of the picture tube is very thin, and accordingly, the deflection angle of the electron beam increases when the picture tube is working, for example, it may be increased from the original 90° to 120°, plus the sensitivity of the deflection coil increases, The initial inductance of the line high-voltage package and the discreteness of the errors of other components in the line will lead to the deterioration of the accuracy and consistency of the electron bombardment of the phosphor, and finally in a non-linear form, that is, ...

AI Technical Summary

Problems solved by technology

However, this will consume more production man-hours, reduce production efficiency, and be detrimental to the pass-through rate of mass production; in this way, it is necessary to prepare a variety of inductance linear inductors for backup; at the same time, each TV may use different inductances. Different row linear inductance will cause inconvenience to the follow-up process and after-sales service

[0004] Using the above method 2, it is convenient to adjust the inductance online for nonlinear correction, but the price of the threaded adjustable inductance is twice the price of the replaced ordinary linear inductance, which will increase the cost of the positive electrode

[0005] In other applications other than CRT TVs, the above two methods are usually used when the inductance of the inductor needs to be changed, and there are also unfavorable factors that affect production efficiency and manufacturing costs.

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