JPS5826230B2 - Mitsupugata flyback transformer - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a method for manufacturing a sealed flyback transformer with a built-in resonant capacitor in a horizontal deflection output circuit, and its purpose is to produce an oil capacitor as a resonant capacitor without impregnating it. After assembling the transformer part of the flyback transformer and placing it in an appropriate container, vacuum impregnation is performed with high voltage insulating oil such as silicone oil to simultaneously insulate the oil capacitor as the resonance capacitor and the transformer part of the flyback transformer. By doing so, the aim is to significantly reduce manufacturing man-hours and the number of parts.

In the conventional horizontal deflection output circuit (see Fig. 3), the resonant capacitor 6 consists of a relatively large-capacity oil capacitor and a small-capacity chitabari 4 for high-voltage adjustment, both of which are connected to the air. On the other hand, the flyback transformer 14 was assembled with the transformer part, high voltage rectifier diode 9, etc. and housed in an appropriate container, and then vacuum impregnated with high voltage insulating oil such as silicone oil.

In FIG. 3, 1 is a horizontal output transistor, 2 is a damper diode, 3 is a horizontal deflection yoke, 7 is a flyback transformer secondary winding, and 8 is a flyback transformer high voltage winding.

In the conventional structure described above, when manufacturing an oil capacitor as a single unit, an impregnation process is required. Also, when using an oil capacitor as a resonant capacitor, creeping insulation becomes a problem, so a ceramic cylinder is covered with the surface of the oil capacitor. must be further reinforced with a film or the like, which has the disadvantage of complicating the manufacturing process, requiring a large number of manufacturing steps, and increasing the number of parts.

This invention of a method for manufacturing a sealed flyback transformer eliminates the above-mentioned conventional drawbacks, and one embodiment will be described below with reference to the drawings.

FIG. 1 shows a horizontal deflection output circuit using a sealed flyback transformer according to the method of the present invention, in which 1 is a horizontal output transistor, which is sequentially connected to a damper diode 2, a horizontal deflection yoke 3, and a resonant capacitor for high voltage adjustment 4. is connected to.

The dotted line part 5 indicates the flyback transformer, and the resonant capacitance 6
It also incorporates transformer parts such as a flyback transformer secondary winding 7, a flyback transformer high voltage winding 8, and a high voltage rectifier diode 9.

As shown in FIG. 2, the flyback transformer 5 according to the invention of this method is constructed by installing an oil capacitor as a resonance capacitor 6 in a container 10 at the time of assembling the transformer portion of the flyback transformer 5. Vacuum impregnation is performed with voltage-resistant insulating oil 11, and the oil capacitor serving as the resonance capacitor 6 and the transformer portion of the flyback transformer 5 are insulated at the same time.

In the figure, 12 indicates a ferrite core for a flyback transformer, and 13 indicates a high voltage terminal.

Since the manufacturing method of the sealed flyback transformer according to the present invention adopts the above-mentioned method, the following effects can be obtained.

The oil capacitor as a resonant capacitor and the transformer part of the flyback transformer are housed in a container at the same time, and then vacuum impregnated with high-voltage insulating oil such as silicone oil, which makes the impregnation process easier when manufacturing the oil capacitor as a single unit. It will no longer be necessary after that, and when an oil capacitor is used as a resonant capacitor, the entire capacitor will be placed in high-voltage insulating oil. It used to be reinforced with film, etc., but that is no longer necessary.

In addition, the manufacturing process is simplified, such as eliminating the need to install a resonant capacitor as a circuit element on a printed board, etc., and it is possible to provide a manufacturing method for a sealed flyback transformer with equivalent value, which can significantly reduce manufacturing man-hours and the number of parts. Ta.

[Brief explanation of the drawing]

FIG. 1 is a horizontal deflection output circuit diagram of the invention of this method, FIG. 2 is an explanatory diagram of the internal structure of a sealed flyback transformer in the same circuit, and FIG. 3 is a conventional horizontal deflection output circuit diagram. 5...Flyback transformer, 6...
Resonance capacity, 11... High voltage insulation oil.

Claims (1)

[Claims] 1. A transformer part in a horizontal deflection output circuit, a high-voltage rectifier diode connected to this transformer part, and an unimpregnated oil capacitor as a resonance capacitor are housed in a container, and then a high-voltage insulating oil such as silicone oil is placed in the container. A method for manufacturing a sealed flyback transformer, which is characterized in that the transformer is sealed by vacuum impregnation.