A dynamic calibrating current sensor control system, comprising: an input power supply that generates an input current; a current sensor interposed between the input power supply and a load, the current sensor configured to output at least one current signal indicating a level of current delivered to the load; a switch interposed between the current sensor and the input power supply to selectively deliver the input current to the load; an electronic switching control circuit in signal communication with the switch, the electronic switching control circuit configured to generate a switch control signal that controls the switch to selectively connect the input power supply to the load and to deliver the switch control signal a predetermined time period after generating the switch control signal; an electronic drift suppression circuit in signal communication with the current sensor and the switching control circuit, the drift suppression circuit configured to generate a corrected current signal in response to applying an offset value to the current signal, the offset value cancelling drift current from the current signal in response to connecting the input power supply to the load, the drift suppression circuit configured to store different current values output by the current sensor based on the connection state of the input power supply to the load; wherein the electronic drift suppression circuit includes an electronic differential circuit configured to store, as the offset value, a first current value output by the current sensor after generating the switch control signal but prior to closing the switch such that the input power supply is disconnected from the load, and after storing the offset value, is configured to receive a second current value output by the current sensor in response to delivering the switch signal to close the switch connecting the power supply to the load such that the input power supply is connected and drives the load, and to subtract the first current value from the second current value in response to connecting the input power supply to drive the load; and further comprising: an electronic BIT analysis circuit that is configured to receive the corrected current signal excluding drift current from the drift suppression circuit, and to determine an on-state or an off-state of the load based on the corrected current signal. an input power supply that generates an input current; a current sensor interposed between the input power supply and a load, the current sensor configured to output at least one current signal indicating a level of current delivered to the load; a switch interposed between the current sensor and the input power supply to selectively deliver the input current to the load; an electronic switching control circuit in signal communication with the switch, the electronic switching control circuit configured to generate a switch control signal that controls the switch to selectively connect the input power supply to the load and to deliver the switch control signal a predetermined time period after generating the switch control signal; an electronic drift suppression circuit in signal communication with the current sensor and the switching control circuit, the drift suppression circuit configured to generate a corrected current signal in response to applying an offset value to the current signal, the offset value cancelling drift current from the current signal in response to connecting the input power supply to the load, the drift suppression circuit configured to store different current values output by the current sensor based on the connection state of the input power supply to the load; wherein the electronic drift suppression circuit includes an electronic differential circuit configured to store, as the offset value, a first current value output by the current sensor after generating the switch control signal but prior to closing the switch such that the input power supply is disconnected from the load, and after storing the offset value, is configured to receive a second current value output by the current sensor in response to delivering the switch signal to close the switch connecting the power supply to the load such that the input power supply is connected and drives the load, and to subtract the first current value from the second current value in response to connecting the input power supply to drive the load; and further comprising: an electronic BIT analysis circuit that is configured to receive the corrected current signal excluding drift current from the drift suppression circuit, and to determine an on-state or an off-state of the load based on the corrected current signal.