JPS62161426U

JPS62161426U -

Info

Publication number: JPS62161426U
Application number: JP5029186U
Authority: JP
Priority date: 1986-04-03
Filing date: 1986-04-03
Publication date: 1987-10-14

Description

[Brief explanation of drawings]

第１図は、本考案による磁気近接スイツチの基
本的な実施例の構成を示す電気回路図である。第
２図は、強磁性体抵抗素子の基本的な動作の説明
に供する図である。第３図は、強磁性体抵抗素子
に対する駆動磁石からの磁石の作用形態を説明す
る図である。第４図は、第２図および第３図に示
した強磁性体抵抗素子の出力特性図である。第５
図は、本考案における強磁性体抵抗素子の基本的
動作を説明する図である。第６図は、第５図に示
した強磁性体抵抗素子の動作を説明する特性線図
で、第６図ａは強磁性体抵抗素子の出力電圧特性
を、第６図ｂはこの強磁性体抵抗素子の出力電圧
に応じたコンパレータの出力特性を示すものであ
る。第７図は、本考案の他の実施例を示す電気回
路図である。符号の説明、ＭＲ；強磁性体抵抗素子、１；コ
ンパレータ、２；駆動磁石、Ｒ１，Ｒ２；内部抵
抗、ｒ１，ｒ２；調整抵抗、Ｅ；電源、Ｖ１；出
力電圧、Ｖ２；しきい値電源、ＶＨ，ＶＬ；しき
い値電圧、Ｂ１；バイアス磁力、Ｂ２；駆動磁力
。 FIG. 1 is an electrical circuit diagram showing the configuration of a basic embodiment of a magnetic proximity switch according to the present invention. FIG. 2 is a diagram for explaining the basic operation of a ferromagnetic resistance element. FIG. 3 is a diagram illustrating the mode of action of the magnet from the drive magnet on the ferromagnetic resistance element. FIG. 4 is an output characteristic diagram of the ferromagnetic resistance element shown in FIGS. 2 and 3. Fifth
The figure is a diagram explaining the basic operation of the ferromagnetic resistance element in the present invention. Figure 6 is a characteristic diagram explaining the operation of the ferromagnetic resistance element shown in Figure 5. Figure 6a shows the output voltage characteristics of the ferromagnetic resistance element, and Figure 6b shows the 3 shows the output characteristics of the comparator according to the output voltage of the body resistance element. FIG. 7 is an electrical circuit diagram showing another embodiment of the present invention. Explanation of symbols, MR: Ferromagnetic resistance element, 1: Comparator, 2: Drive magnet, R1, R2: Internal resistance, r1, r2: Adjustment resistance, E: Power supply, V1: Output voltage, V2: Threshold power supply , VH, VL: threshold voltage, B1: bias magnetic force, B2: drive magnetic force.

Claims

[Scope of utility model registration request]

A ferromagnetic resistance element MR to which a bias magnetic force B1 of a certain direction and value is applied is connected to a comparator 1 whose threshold value has a hysteresis, and is arranged near the movement locus of a drive magnet 2. is,
The output voltage V1 of the resistive element MR is set such that the maximum value of the output voltage V1 is higher than the on-switching threshold voltage VH of the comparator 1, but the minimum value is lower than the off-switching threshold voltage VL of the comparator 1. value, and furthermore, both threshold voltages V when the driving magnetic force B2 from the driving magnet 2 is not acting.
The bias magnetic force B1, the drive magnetic force B2, and both threshold voltages V
A self-holding type magnetic proximity switch consisting of H and VL settings.