JPH0173901U

JPH0173901U -

Info

Publication number: JPH0173901U
Application number: JP1988152823U
Authority: JP
Priority date: 1988-11-24
Filing date: 1988-11-24
Publication date: 1989-05-18

Description

[Brief explanation of the drawing]

第１図はこの考案によるハイブリツド可変抵抗
器の一実施例の基本的構成を示す斜視図、第２図
はこの考案の一実施例の等価回路図、第３図はこ
の考案の一実施例の特性を示す線図、第４図はこ
の考案の一実施例の具体的構成を示す断面図、第
５図及び第６図は従来のハイブリツド可変抵抗器
の構成例を示す断面図及び斜視図である。１は抵抗線、２は被膜抵抗、３は巻線抵抗素子
、５は摺動子、ＲＷは巻線抵抗素子のみの抵抗値
、ＲＨは被膜抵抗形成後の合成抵抗値である。 Fig. 1 is a perspective view showing the basic configuration of an embodiment of a hybrid variable resistor according to this invention, Fig. 2 is an equivalent circuit diagram of an embodiment of this invention, and Fig. 3 is an example of an embodiment of this invention. FIG. 4 is a sectional view showing a specific configuration of an embodiment of the invention, and FIGS. 5 and 6 are sectional views and perspective views showing an example of the configuration of a conventional hybrid variable resistor. be. 1 is a resistance wire, 2 is a film resistor, 3 is a wire-wound resistance element, 5 is a slider, RW is the resistance value of only the wire-wound resistance element, and RH is the combined resistance value after forming the film resistance.

Claims

[Claims for Utility Model Registration] A smooth coated resistor is formed on at least one side of a wire-wound resistor element so as to avoid unevenness caused by the wound resistance wire, and the smooth surface of the coated resistor is slid. In a hybrid variable resistor having a sliding element, the difference between the resistance value of the wire-wound resistance element alone and the combined resistance value after forming the film resistor is 20 to 40% of the resistance value of the wire-wound resistance element alone. %, and the change in contact resistance value between when the sliding part of the slider is in a position facing each winding of the resistance wire and when it is in the middle of this facing position is to be reduced. A hybrid variable resistor characterized by: