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| Created | December 24, 2012 |
| Last modified | December 24, 2012 |
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This circuit demonstrates how to interface a 1000:1 current transformer to an ADC. The current being measured is 0-10A RMS, and the 100-ohm load resistor yields an output voltage of 0-1V RMS, which is 2.828Vpp. This is biased to the middle of the range of a 0-5V ADC by R2 and R3, and the ADC is protected from overvoltage by D1 and D2. Note that R2 and R3 serve to limit the fault current through the diodes.
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