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Differential Current Sensing Inside H Bridge (AD8205)

2016-05-16 22:45  
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This article describes the Differential Current Sensing Inside H Bridge (AD8205). The content is very simple, very helpful. Components in this article can help you understand better understanding of this article. For example, in this article, you can go to find and buy these components:AD8205.

A differential current sensing that is inserted inside a H bridge circuit. is shown in the schematic diagram below. This circuit is one example of AD8205 application. The AD8205 measures current in both directions as the motor changes direction and H-bridge switches.

Differential Current Sensing Inside H Bridge circuit schematic

This circuit has high accuracy in current measurement because AD8205 is placed in the middle of the H-bridge. Compared with a ground referenced op amp, this circuit is better, because ground is unstable reference voltage, so ground referenced op amp is inaccurate.

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