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.

Operate Millitesla (mT)

Required number input.

Release Millitesla (mT)

Required number input.

Magnetic hysteresis window between the Hall switch operating and release thresholds. 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]

Hysteresis Millitesla (mT)

The resulting hysteresis millitesla returned as a number.

• Hall voltage and switch thresholds depend on bias current, material, geometry, field orientation, temperature, hysteresis, offset, and magnetic circuit. Use guaranteed operate and release limits for switching designs.
• 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.

• Comparator Hysteresis Band

  Comparator hysteresis-band width between upper and lower switching thresholds.

• Battery Internal Impedance

  Estimate DC battery internal resistance from the voltage drop between two load-current operating points measured over a short interval.

• LED Series Resistor Calculator

  Compute the series resistor that sets an LED operating point: R = (Vs - Vf) / I, dissipating the difference between supply and forward voltage.