Energy monitor for a power source

At least one computer-readable storage medium comprising instructions that, when executed, cause a controller to:

• receive a first indicator of a current sense signal and a second indicator of an associated voltage sense signal that are derived from an output of the power supply unit;
• trigger digitization of a measurement of the first indicator to produce a digitized first indicator measurement;
• trigger an accumulation of the digitized first indicator measurement to produce an accumulated first indicator measurement;
• and
• scale the accumulated first indicator measurement into a measurement of energy.

A system comprising:

• a current sensor to provide a first voltage that indicates a current delivered by an energy source;
• a processor to consume energy produced by the energy source;
• a memory coupled to the processor, the memory configured to store data;
• a voltage sensor to provide a second voltage that indicates voltage measurement of a voltage associated with the current delivered by the energy source;
• a first analog-to-digital converter (ADC) to digitize the first voltage and produce digitized first voltages;
• and
• control logic to accumulate in a first accumulator the digitized first voltage when triggered by a signal based upon the second voltage, and to scale an accumulation of digitized first voltages into a measurement of energy.