Use this electronics calculation for a first-pass component, converter, signal, motor, or sensor estimate when the stated operating conditions and units match the device data.

Supply Volts (V)

Required number input.

Baseline Ohms (Ω)

Required number input.

Resistance Change Ohms (Ω)

Required number input.

Change in divider output voltage when the upper magnetoresistive element changes by ΔR while an equal fixed resistor remains below it. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Output Change Volts (V)

The resulting output change volts returned as a number.

• Magnetic-field and heading results depend on axis alignment, calibration, hard- and soft-iron distortion, local inclination, temperature, nearby current, sensor saturation, and tilt compensation. A field magnitude alone does not provide a reliable compass heading.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check the result against the current datasheet and worst-case operating corners, then verify the circuit or measurement with simulation and bench testing where failure matters.

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