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.

Delta RA (Ω)

Required number input.

Delta RB (Ω)

Required number input.

Delta RC (Ω)

Required number input.

Convert a delta network to its equivalent wye network and return the R1 arm. 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]

Wye R1 (Ω)

The resulting wye r1 returned as a number.

• Compact electronics formulas omit some combination of tolerances, temperature drift, bandwidth, loading, parasitics, noise spectrum, nonlinearity, clipping, calibration, layout, and device-specific limits. Typical datasheet values are not guaranteed limits.
• 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.

• Wye To Delta RA

  Convert a wye network to its equivalent delta network and return the RA arm.

• ESR From Q

  Derive the equivalent series resistance of a component from its reactance and quality factor.

• Peak to RMS Voltage Calculator

  Convert a sinusoidal peak voltage to its root-mean-square value, Vrms = Vp / sqrt(2); the RMS value produces the same heating in a resistor as the equivalent DC voltage.