Published:2011/6/8 21:50:00 Author:leo | Keyword: The high-end current monitor circuit formed by INA168, INA168 | From:SeekIC
What the picture shows is a high-end current monitor circuit formed by INA168. When detecting the changing current of the power supply, loop wire is connected to the ground by the side. Sometimes, the enclosure and rock can not be connected to diverge resistance, it needs to connect Rs to the plus terminal of power supply to test the voltage difference generating by the current passing through Rs in order to detect the current passed through.
In this circuit, INA168 is specailly used to detect the current. The followings are some parameters of it: The voltage of power supply is 30 to 60 V. The maximum current it can detect is 10 A. When the current value is 10 A, the output detecting voltage should be 4 V. When the detecting voltage of power supply is low, it needs to use operating amplifier to form differential amplifier. But this circuit is suitable for the application under high power supply.
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