Electricity Tools
Browse all available electricity tools.
Available tools
- AC Power Triangle Calculator Derive apparent power, signed reactive power, and phase angle from nonnegative real power and a leading or lagging power factor.
- AC Voltage Reference Phase Shift Tool Change a sinusoidal phasor reference by subtracting an explicit phase shift and wrapping to [0,360) degrees.
- Admittance Conductance Susceptance Sign Pair Tool Classify the susceptance sign of G+jB under the exp(+j*omega*t) admittance convention.
- Balanced Star Neutral Current Residual Tool Calculate balanced star neutral current residual from explicit caller-supplied inputs.
- Bridge Arm Ratio Balance Residual Tool Return ideal unloaded bridge midpoint voltage difference and the exact resistor-ratio balance flag.
- Bridge Sensor Common Mode Reference Tool Separate two bridge node voltages into differential and reference-centered common-mode components.
- Cable Resistance Two Wire Loop Factor Tool Calculate cable resistance two wire loop factor from explicit caller-supplied inputs.
- Capacitive Inductive Reactance Crossover Flag Compare explicit inductive and capacitive reactance magnitudes in a series reactive balance without estimating a crossover frequency.
- Capacitor Charge Residual Tool Compare supplied signed charge against C times measured voltage in compatible units; no charging transient model.
- Capacitor Charge Sharing Dissipation Tool Return ideal charge-sharing energy loss and final voltage for like-polarity parallel connection; parasitic dynamics are excluded.
- Capacitor Charge Sign Reference Calculate ideal capacitor terminal charge from explicit capacitance and terminal potentials under a supplied terminal sign reference.
- Capacitor Charge Step Energy Residual Tool Compare supplied work with the capacitor stored-energy change.
- Capacitor Leakage Power Fraction Tool Compare ideal resistive leakage power with a supplied total power, without component safety assessment.
- Capacitor Ripple Current Heating Term Tool Calculate capacitor ripple current heating term from explicit caller-supplied inputs.
- Capacitor Series Reciprocal Term Tool Return one positive ideal capacitor's contribution to the reciprocal sum for a series combination.
- Capacitor Series Voltage Share Tool Compute a selected ideal series-list capacitor voltage share under equal charge, reusing pair-voltage arithmetic after reciprocal scaling.
- Complex Power One Harmonic Cross Term Tool Return P and Q for one matching-frequency RMS voltage/current harmonic with voltage-minus-current phase.
- Conductance Temperature Relative Change Tool Apply a linear resistance temperature coefficient to the reciprocal conductance, not directly to conductance.
- Current Divider Conductance Fraction Tool Calculate current divider conductance fraction from explicit caller-supplied inputs.
- Current Transformer Ratio Polarity Apply an ideal explicit current-transformer turns ratio and supplied reference polarity without sizing or operating a transformer.
- Delta Wye Single Impedance Branch Tool Convert one real-valued delta branch pair to its wye branch using the sum of all three delta impedances.
- Diode Small Signal Conductance At Point Tool Differentiate the ideal Shockley equation at an explicit operating point, including the saturation-current term.
- Electrical Current Calculator Calculate electrical current from voltage and resistance using Ohm's law.
- Electrical Energy Meter Pulse Factor Tool Calculate electrical energy meter pulse factor from explicit caller-supplied inputs.
- Electrical Power Calculator Calculate electrical power from voltage and current.
- Electrical Power Practice Create reproducible practice for Electrical Power Calculator from supplied scenarios, returning validated questions and computed answers under the source tool's assumptions and limits.
- Electrical Resistance Calculator Calculate electrical resistance from voltage and current using Ohm's law.
- Electrical Voltage Calculator Calculate electrical voltage from current and resistance using Ohm's law.
- Electricity: Ac Power Leading Lagging Quadrant Tool Label an explicit P/Q operating point under positive-load power convention, refusing a load leading/lagging label for nonpositive real power; no grid-stability judgment.
- Electricity: Capacitor Initial Final Energy Delta Tool Compute ideal capacitor stored-energy change between explicit signed initial/final voltages, independent of charge polarity; excludes losses and dielectric nonlinearities.
- Electricity: Complex Power Real Imaginary Pair Tool Compute RMS complex power V*conjugate(I) from one explicit voltage/current phasor pair under the passive load convention.
- Electricity: Ideal Diode Branch Drop Check Tool Check supplied ideal-diode operating-point consistency under an explicit absolute tolerance, not solve or certify a circuit.
- Electricity: Inductor Mutual Dot Sign Tool Apply the ideal mutual-inductance dot-convention sign to one supplied current derivative and voltage-reference orientation; not a coupled-circuit solver.
- Electricity: Phasor Leading Lagging Label Tool Label current phase relative to voltage under a signed phasor convention normalized to [-180,180); not power-factor or instrument calibration.
- Electricity: Reactive Power Sign Convention Crosswalk Tool Crosswalk the sign of one supplied reactive-power value between explicitly declared load-positive and generator-positive conventions; not a grid stability assessment.
- Electricity: Resistor Conductance Weighted Current Share Tool Compute one parallel-resistor branch current from total current, its resistance and the independently summed other-branch conductance; ideal resistive split only.
- Electricity: Resistor Delta Temperature Coefficient Step Tool Apply the local linear resistance temperature-coefficient approximation about a caller-established reference state, rejecting nonpositive predicted resistance; not a wide-range material model.
- Electricity: Shunt Burden Single Reading Error Tool Compute ideal ammeter shunt loading of an explicit Thevenin source, including the series burden and relative current change; no instrument rating or safety claim.
- Electricity: Transformer Turns Polarity Sign Tool Apply an ideal transformer turns ratio with an explicit common/opposed dotted voltage-reference orientation; not a winding safety or saturation model.
- Electricity: Voltage Divider Instrument Loading Delta Tool Compute the ideal resistive-divider measurement loading change caused by finite parallel meter resistance; no instrument safety or transient response.
- Inductance Coupling Sign Term Tool Form one signed ideal mutual-inductance term from supplied coupling magnitude and aiding/opposing convention.
- Inductor Copper Loss DC Term Tool Calculate inductor copper loss dc term from explicit caller-supplied inputs.
- Inductor Current Step Energy Tool Compare stored energies at two explicit signed currents in the same ideal inductor, reusing the single-state energy function.
- Inductor Energy Current Sign Invariance Tool Compare ideal inductor stored energy before and after reversing current polarity.
- Inductor Flux Linkage Current Point Tool Return flux linkage and differential inductance under an explicitly constant linear-inductor model.
- Inductor Mutual Energy Sign Token Tool Signed mutual energy term under an explicit dot-convention sign.
- Inductor Series Initial Flux Balance Tool Resolve an ideal constrained common current by conserved total flux linkage for uncoupled inductors.
- Lossy Inductor Series Parallel Resistance Factor Tool Calculate lossy inductor series parallel resistance factor from explicit caller-supplied inputs.
- Magnetically Coupled Inductor Energy Cross Term Tool Return only the signed mutual M*i1*i2 contribution to ideal coupled-inductor stored energy.
- Neutral Star Point Single Phase Offset Subtract an explicit neutral-point potential from a phase potential on the same scalar instantaneous reference.
- Parallel Capacitor Initial Charge Balance Tool Find the signed charge-conserving voltage when ideal capacitors are joined with the supplied common polarity.
- Parallel RC Admittance Loss Angle Tool Calculate parallel rc admittance loss angle from explicit caller-supplied inputs.
- Parallel Resistance Calculator Combine resistors in parallel into one equivalent resistance via reciprocal summation.
- Parallel Resistance Single Branch Sensitivity Tool Return the derivative of equivalent parallel resistance with respect to one positive branch resistance.
- Phasor Conjugate Power Sign Check Tool Compute complex power V*conj(I) from RMS rectangular phasors using the passive sign convention.
- Phasor Phase Sign Reference Inversion Tool Reverse the polarity reference of a phasor by a half-turn while preserving nonnegative magnitude.
- Phasor Single Frequency Time Origin Tool For new time coordinate t_new=t_old-originShift, apply phase_new=phase_old+omega*originShift.
- Phasor Three Way Zero Sum Gap Tool Residual of exactly three supplied complex phasors in rectangular coordinates.
- RC Time Constant Calculator Compute the resistor-capacitor time constant tau = R*C.
- Residual Current Three Conductor Vector Term Tool Sum three supplied RMS conductor-current phasors algebraically without a protection or safety verdict.
- Resistor Junction Temperature Sensitivity Tool First-order supplied linear resistance model and its temperature derivative.
- Resistor Power Rating Explicit Margin Tool Compare measured dissipation with a caller-supplied rating without selecting or certifying a component.
- Resistor Self Heating Power Coefficient Tool Linear small-signal self-heating resistance coefficients using supplied thermal resistance and temperature coefficient.
- Resistor Thevenin Load Current Sensitivity Tool Calculate resistor thevenin load current sensitivity from explicit caller-supplied inputs.
- Resistor Voltage Sensitivity Tool Return supplied ideal Ohm-law voltage and its two local partial derivatives.
- RMS DC AC Composite Voltage Tool Calculate rms dc ac composite voltage from explicit caller-supplied inputs.
- Series Resistance Calculator Sum resistors wired in series: R_total = sum(R_i).
- Series Rl Impedance Phase Component Tool Calculate series rl impedance phase component from explicit caller-supplied inputs.
- Three Phase Phase Sequence Permutation Parity Tool Classify phase-order orientation as permutation parity relative to the explicit [0,1,2] reference.
- Transformer Turns Ratio Reflected Capacitance Tool Reflect secondary capacitance to the primary for ratio N_primary/N_secondary.
- Transformer Turns Ratio Reflected Inductance Tool Reflect secondary inductance to the primary for ratio N_primary/N_secondary.
- Transformer Voltage Regulation Signed Gap Tool Calculate transformer voltage regulation signed gap from explicit caller-supplied inputs.
- Voltage Divider Ratio Resistor Sensitivity Tool Differentiate ideal divider output supply*bottom/(top+bottom) with respect to both resistors.
- Wattmeter Sign Reversal Policy Apply explicit voltage and current reference-polarity reversals to signed wattmeter power.
- Zener Series Resistor Power Term Tool Calculate zener series resistor power term from explicit caller-supplied inputs.