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| 型号： | US4881LUA-AAA-000-BU |
| 厂商： | Melexis Technologies NV |
| 文件页数： | 28/46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 |
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Flux Concentrators
A flux concentrator, or pole piece, is a ferrous material used to significantly increase the performance of
a Hall Effect Sensor System. When a flux concentrator is placed opposite the pole face of a magnet, the
magnetic field channels through the concentrator, thereby increasing the flux density between the con-
centrator and the pole face.
Figure 13, Flux Concentrator
The reason this magnetic flux channels through the concentrator is because of the reluctance of the fer-
rous material. Reluctance is the resistance that magnetic flux lines experience as they flow from the North
pole into the South pole of a magnet. Ferromagnetic materials have lower reluctance than air, therefore a
pole piece provides an easier path for the flux to flow through, while increasing the flux density at the
same time. There are three benefits to adding a flux concentrator to a magnetic circuit. First, a less sensi-
tive Hall Effect Sensor can be implemented, a result of the increased flux density. The second benefit of
using a flux concentrator is that Hall Effect Sensor with a specific operate level can be actuated a greater
distance from the magnet, than if one were not in use. The addition of a pole piece also allows the use of
a magnet with a lower field intensity. A flux concentrator makes it possible to use a smaller magnet or a
magnet of different material to achieve the same operating characteristics as one with higher flux density
or a larger size. When choosing materials for a pole piece, pay attention to the following characteristics:
The permeability and reluctance of the material will affect its performance as a flux concentrator. Also,
pay close attention to the mechanical characteristics of machining and corrosion. These properties are
very important when selecting an alloy.
Section 3 - Applications
3-9
N
Magnet
S
Ferrous
Concentrator
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相关代理商/技术参数 |
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| US-4AI | 制造商:Tripp Lite 功能描述:4 PORT USB DEVICE SERVER - INT - Bulk 制造商:Tripp Lite 功能描述:4 Port USB Device Server - Int |
| US4KB80-7000 | 功能描述:整流器 4.0 Amp 800 Volt RoHS:否 制造商:Vishay Semiconductors 产品:Standard Recovery Rectifiers 配置: 反向电压:100 V 正向电压下降: 恢复时间:1.2 us 正向连续电流:2 A 最大浪涌电流:35 A 反向电流 IR:5 uA 安装风格:SMD/SMT 封装 / 箱体:DO-221AC 封装:Reel |
| US4KB80R | 功能描述:桥式整流器 Diode-Bridge Rectifier RoHS:否 制造商:Vishay 产品:Single Phase Bridge 峰值反向电压:1000 V 最大 RMS 反向电压: 正向连续电流:4.5 A 最大浪涌电流:450 A 正向电压下降:1 V 最大反向漏泄电流:10 uA 功率耗散: 最大工作温度:+ 150 C 长度:30.3 mm 宽度:4.1 mm 高度:20.3 mm 安装风格:Through Hole 封装 / 箱体:SIP-4 封装:Tube |
| US4KB80R-7000 | 功能描述:桥式整流器 4.0 Amp 800 Volt RoHS:否 制造商:Vishay 产品:Single Phase Bridge 峰值反向电压:1000 V 最大 RMS 反向电压: 正向连续电流:4.5 A 最大浪涌电流:450 A 正向电压下降:1 V 最大反向漏泄电流:10 uA 功率耗散: 最大工作温度:+ 150 C 长度:30.3 mm 宽度:4.1 mm 高度:20.3 mm 安装风格:Through Hole 封装 / 箱体:SIP-4 封装:Tube |
| US4PBC-E3/86A | 制造商:Vishay Semiconductors 功能描述:4A,200V SM ULTRAFAST RECTIFIER - Tape and Reel |
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