Shopping for electronic components online has many advantages that make it a convenient and efficient way to shop. Here are some advantages of shopping for electronic components online:
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1. **Wide Selection* Online marketplaces usually offer a wide variety of electronic components, including different brands, models, and specifications. You can easily find the components you need.

2. **Compare and Research* When shopping online, you can easily compare the price, performance and features of different products. You can view detailed product information, spec sheets, technical data and user reviews to make informed purchasing decisions.

Current sensors and proximity sensors are two different types of sensors that are used in different applications and have significant differences in how they work and what they are used for.
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**Current Sensor*

1. **Purpose* Current sensors are used to measure the current flowing within a circuit, determining its magnitude and direction. They are commonly employed for monitoring current loads, detecting current anomalies, and various applications in power systems.

2. **Working Principle* Current sensors can operate based on various principles, including inductive, Hall effect, and current transformers. Inductive current sensors measure current by detecting the magnetic field changes it induces. Hall effect sensors utilize the Hall effect to measure current, and current transformers function as per the transformer principle to reduce current to a measurable range.