How to use

Pick L, R_coil, R_load, and source settings.
Press Set Ref to store a baseline.
Change parameters and watch power split + Δ Counter-EMF.

Violet band = 0 → τ window. The metric integrates ∫ |vL(t)| dt in that window.

Coil & Load

Inductance L

Coil resistance R_coil

Load resistance R_load

R_total = R_coil + R_load

—

τ = L / R_total

—

I∞ = V / R_total

—

I0 (steady)

—

Source

Mode

Pulse train Sinewave

Amplitude (pulse)

Repetition frequency

Pulse width

Ideal rectangular voltage pulse into an RL branch (analytic).

Scope

Timebase

ms/div

Channels

CH1: v(t) CH2: i(t) CH3: v_L(t)

CH1 v(t)

CH2 i(t)

CH3 vL(t)

Counter-EMF Δ

Set Ref

Δ of ∫|vL|dt in window (0→τ) vs ref

Δi_win: —

Ref

—

Now

—

Set a reference to start comparing.

Metrics

P_source_avg

—

P_load_avg

—

P_coil_loss_avg

—

Load share

—

Coil share

—

ΔP_source vs ref

—

E_source / period

—

E_load / period

—

E_coil_loss / period

—

ΔW_L (0→τ)

—

Energy balance (per)

—

Set reference to compare.

V_rms

—

I_rms

—

S = V_rms·I_rms

—

PF = P/S

—

φ (deg)

—

Q (var)

—

Q_win (0→τ)

—

Δλ_win (0→τ)

—

W_L,pk (0→τ)

—

Check Δλ ?= L·Δi

—

Check ΔW ?= ∫ vL·i dt

—

Sine: φ and Q are physical. Pulse: φ/Q are “equivalent” unless you later add fundamental-only metrics.

What the source must “fight”.

Peak |vL| (window)

—

Peak |di/dt| (window)

—

Rise softness index

—

Pulse-only meaning; for sine this is not emphasized.

I_end

—

½·L·I_end²

—

Remaining after OFF

—