BL0921 Single Phase Energy Meter IC with Integrated Oscillator FEATURES High accuracy, less than 0.
1% error over a dynamic range of 500: 1 On-chip oscillator as clock source Exactly measure the real power in the positive orientation and negative orientation, calculate the energy in the same orientation Two current monitors continuously monitor the phase and neutral currents in two-wire distribution systems.
Uses the larger of two currents to bill, even during a Fault condition A PGA in the current channel allows using small value shunt and burden resistance The low frequency outputs F1 and F2 can directly drive electromechanical counters and two phase stepper motors and the high frequency ...

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