JPS62126819U

JPS62126819U -

Info

Publication number: JPS62126819U
Application number: JP1349786U
Authority: JP
Priority date: 1986-01-31
Filing date: 1986-01-31
Publication date: 1987-08-12

Description

[Brief explanation of drawings]

第１図は本考案の実施例の構造を示す模式図、
第２図は従来の変圧器の構造を示す模式図、第３
図ａおよびｂは第２図の変圧器の出力電圧電流特
性を説明するための線図である。１…鉄心、２…１次巻線、４…第１の２次巻線
、５…第２の２次巻線、４ｂ，５ｃ…６０Ｈ_ｚ用
端子、４ｃ，５ｂ…６０Ｈ_ｚ用端子。 FIG. 1 is a schematic diagram showing the structure of an embodiment of the present invention;
Figure 2 is a schematic diagram showing the structure of a conventional transformer;
Figures a and b are diagrams for explaining the output voltage and current characteristics of the transformer in Figure 2. 1... Iron core, 2... Primary winding, 4... First secondary winding, 5... Second secondary winding, 4b, 5c... _60Hz terminal, 4c, 5b... _60Hz terminal.

Claims

[Claims for Utility Model Registration] 1. The primary winding and the winding are _n21 and one end is 5
a first secondary winding that is loosely magnetically coupled to the primary winding, which has a 0 _Hz terminal and a 60 Hz tap terminal located a predetermined number of turns Δn from the 50 _Hz terminal; The number of turns is _n22 and one end is 60H.
_z terminal and the number of turns △ from the 60Hz _z terminal.
A second secondary winding is magnetically densely connected to the primary winding provided with a tap terminal for 50 Hz at position n, and magnetically loosely coupled to the first secondary winding. and the first and second secondary windings are connected in series with each other using the terminals for _50Hz or _60Hz or the other ends of the secondary windings, respectively, depending on the power supply frequency _. The total number of turns of the _secondary winding is (n _{2
1} +n ₂₂ -Δn) A power transformer for arc machining. 2. The power transformer for arc machining according to claim 1, wherein the number of turns Δn is 10 to 30% smaller than the value satisfying n ₂₁ n ₂₁ −Δn=√1.2.