JPS58115804A - Flyback transformer - Google Patents

Abstract

PURPOSE:To obtain a flyback transformer capable of greatly varying the width of fluctuation of a leakage inductance and applicable to a variety of horizontal deflection circuits having different circuit constants from each other, by employing a second low-voltage coil bobbin which can be fitted on and removed from a first low-voltage coil bobbin at will. CONSTITUTION:A second low-voltage coil bobbin 2 is fitted on a first low-voltage coil bobbin 1, and a high-voltage coil bobbin 17 which has a housing part 14 capable of disposing therein the second low-voltage coil bobbin 2 as well as a high-voltage coil 15 wound and split by a plurality of collars 16 is disposed as illustrated. In case of requiring much leakage inductance, a low-voltage coil 12 is wound on a groove 11 defined by collars 5 and 6. In case of requiring a decrease in leakage inductance, the low-voltage coil 12 is split-wound on also the other groove 18 of the second low-voltage coil bobbin 2. In case of requiring a further decrease in leakage inductance, the low-voltage coil 12 is split-wound on both the grooves 11, 18 of the second low-voltage coil bobbin 2 as well as the first coil bobbin 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flyback transformer used in a television receiver aircraft.

In general, the performance of flybag transformers differs due to differences in the voltage of the horizontal deflection circuit that uses it, and circuit constants such as the inductance of the horizontal deflection coil and the resonant capacitor. It must be designed to adapt.

Performance requirements for flyback transformers include small regulation V yon and small aj nging, and as a means to satisfy these requirements, conventional methods have been used to set the leakage inductance and distributed capacitance of the flyback transformer to appropriate values. Adjustments are made to make the same high ski. In particular, the leakage inductance is adjusted by increasing or decreasing the number of turns of the low-voltage coil and high-voltage coil, or by increasing or decreasing the relative distance between the low-voltage coil and the high-voltage coil, but in conventional flyback transformers, the low-voltage coil is wound. Since the position of the deflection is uniformly determined and cannot be selected arbitrarily, we designed a flybag transformer that has a narrow variable range of leakage inductance and is applicable to many types of horizontal deflection circuits with different circuit constants.
It was not easy.

The present invention has been devised to eliminate the above-mentioned drawbacks, and will be described below with reference to the drawings.

Figure 1 shows a hollow ItC installed integrally with a terminal board (4) in which a plurality of external S* terminal bins 31 are implanted.
A cylindrical $1 low-voltage coil bobbin (11) through which a core (not shown) is inserted is shown in FIG.
If it is necessary to make the leakage inductance very small (1h
A low-voltage coil is wound uniformly every month, and a high-voltage coil is placed around the outer circumference of the low-voltage coil.

s! 11! cl is a front view of the second low-voltage coil bobbin (2 summer), which has a plurality of collars (5), (6), and (7); FIG. 4 shows its plan view; The I12 low voltage coil bobbin (2) is inserted into the first low voltage coil bobbin (1) like the SSM, and requires a large amount of inductance. In the case of '#46, as shown in the figure, insert a low pressure coil h@3 into the concave #1 (ll) formed by the collar (5) and the collar (6).
It is for wrapping. The inner surface of the second low-voltage coil bobbin (2) has a plurality of protrusions s (1:1 (*41!1
(Reference JLI) is installed to prevent rattling that occurs in the 11 low-pressure coil bobbin (1). It has a storage part a- in which a 112 low-voltage coil bobbin (2) can be placed, and a plurality of high-voltage coils J&0 at the collar 106: Therefore, it is divided into parts! i was ＼pressure coil pobbin 1? ) are arranged as shown in Figure s7.The low-voltage coil is wound in the concave groove (1m long) of the second low-voltage coil bobbin (2) so that the leakage inductance is as large as possible on the inner surface (showing this embodiment). If you want to reduce the wire inductance.

If the other concave groove a of the second low-voltage coil bobbin (2) is also divided and wound, and it is necessary to further reduce leakage inductance, the double concave groove αυ of the s2 low-voltage coil bobbin (2;
In addition to installing it separately, 41 low-voltage coils are required for the first coil bobbin + Ill:, and the flange 1i of the 112 low-voltage coil bobbin (2): This is for pulling out the t' bobbin (2), and the notch (9) of the collar (6) is used when winding the bobbin by dividing it into two parts.

Further, the narrowing inductance can be made smaller by forming a low voltage coil only on the 41st coil bobbin, as described above (without inserting the second low voltage coil bobbin into the first coil bobbin C).

The winding position of the low-voltage coil can be selected from several types, greatly expanding the variable range of leakage inductance.

As explained above, according to the present invention, since the in-house i12 low voltage coil bobbin y is used for insertion and removal into the W41 low voltage coil bobbin, the width of increase/decrease in thi inductance can be greatly varied, and the horizontal deflection of the highly successful type that increases the circuit constant. A flexible back transformer that can be centered around the circuit is obtained.

[Brief explanation of the drawing]

All of the figures below relate to the present invention ζ2, and are 111
The figure is a side view schematically showing the first low-voltage coil bobbin, and FIG. 2 is a plan view thereof. Figure s6 is a side view of the second low-voltage coil bobbin, and Figure 4 is its plan view.
is a perspective view showing the combined state of iJl and the second low voltage coil bobbin, Figure 6 is a cross-sectional view of the leg showing the state in which the low voltage coil is wound around it, and Figure 's7 is to show the positional relationship between the high voltage coil and the low voltage coil. I! This is the lIs cross section. Roto...First low pressure coil bobbin, (1a)...Hollow part.

Claims (1)

[Claims] (1) It has a cylindrical LT low-voltage coil bobbin into which the core is inserted into the middle 9 part, a groove formed by a plurality of flanges, and can be freely inserted into and removed from the 111 low-voltage coil bobbin. Flyback transformer with low voltage coil bobbin.