参数资料
型号: US4881LUA-AAA-000-BU
厂商: Melexis Technologies NV
文件页数: 9/46页
文件大小: 498K
描述: IC LATCH CMOS H-S TO-92UA
产品目录绘图: UA-92 Series Side
标准包装: 1,000
传感范围: 6mT 跳闸,-6mT 释放
类型: 双极卡锁
电源电压: 2.2 V ~ 18 V
电流 - 电源: 5mA
电流 - 输出(最大): 50mA
输出类型: 数字式,开漏极
工作温度: -40°C ~ 150°C
封装/外壳: TO-226-3,TO-92-3 短体
供应商设备封装: TO-92UA
包装: 散装
产品目录页面: 2792 (CN2011-ZH PDF)
其它名称: US4881LUA
US4881LUA-ND
Rotary Slide-by Switch
Figure 7, Rotary Slide-by Switch
The Rotary Slide-by Switch in Figure 7 is generally used to measure rotary speed to synchronize switch-
ing with position. The Hall IC is activated by a rotating magnet. When the South pole passes by the Hall
IC, the IC is switched ON. As the North pole passes, the Hall IC is switched OFF. The solid circular mag-
net, shown in Figure 7A, is called a Ring Magnet. A ring magnet has alternating North and South poles.
Ring magnets may have from two poles to thirty-six or more, depending on size. Graph 1, below illus-
trates the transition between North and South polarity at various air gaps. Notice the transition point is
similar at the various gaps.
Graph 1, Rotary Slide-by vs. Air gap
Section 3 - Applications
3-7
S   N
S
N
A-11
N
S
A-12
Figure 7A
6 Pole Ring Magnet
-150
-100
-50
0
50
100
150
0
50
100
150
200
250
300
350
400
Rotation in Degrees
0 Airgap
0.025" airgap
0.050" Airgap
0.100" Airgap
0.150" airgap
Figure 7B
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