Patent ID: 11946988
Assignee: PURDUE RESEARCH FOUNDATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method of sensing a current, comprising:
sequentially connecting a first fixed voltage and an output of a first digital to analog converter to an input of a first magnetic tunnel junction device, using a first single pole double throw analog switch;
sequentially connecting a V+ output and a V− output of the first magnetic tunnel junction device to an input of a first band pass filter using a second single pole double throw analog switch, wherein the first single pole double throw analog switch is configured such that the first fixed voltage is connected to the input of the first magnetic tunnel junction device when the V+ output is connected to the input of the first band pass filter, and the first digital to analog converter is connected to the input of the first magnetic tunnel junction device when the V− output is connected to the input of the first band pass filter;
modifying the output of the first digital to analog converter such that an output of the first band pass filter produces an unsaturated sine wave; and
measuring a current passing through a conductor electrically connected to a battery of a vehicle and configured carry the current using the first magnetic tunnel junction device after modifying the output of the first digital to analog converter.