15
Current Sense Circuit
The Current Sense Circuit allows the user to connect a DC input (such as a battery, benchtop
supply or the rectified output of the AC Power Cell + Power Management Board) and a load device
through a low-side 10 Ω sense resistor (see Figure 10). Using an external oscilloscope, the user
can view the amplified current signal. This allows the user to quantify the current draw of their
device. The gain settings of the amplifier allow the user to measure current more accurately
without losing accuracy over the full measurement range of the device. The three current sensing
ranges overlap so there is no loss of continuity.
Figure 10: Current Sense Circuit
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