SevIQ. Design bank

Electrical theory you can build, measure, and play with.

Interactive lessons, bench-ready labs, and live instruments from a workbench in Raufoss, Norway.

Start learning Open live tools
A technical instrument showing two alternating-current waveforms, a sixty-degree phasor, an R-L circuit, and RMS measurements.

Waveforms

4000−400 01020 ms

Phasor (RMS)

0°+90°180°−90° Δφ +60.0°V₁

Circuit

50.00 HzR1.00 kΩL10.0 mH

Measurements (RMS)

V₁
230.0 V
V₂
230.0 V
I
203.7 mA
φ (V₁ → I)
−28.1°
P
46.9 W
Q
−25.3 var
S
53.3 VA
01

Understand

Build intuition with interactive theory and guided explanations.

 02

Build

Assemble circuits and run bench-ready labs.

 03

Observe

Measure real signals with live instruments.

 04

Play

Experiment freely and see what happens.

Follow a signal from idea to instrument.

Each topic connects the explanation, the experiment, the bench build, and the live result.

Browse every topic

Featured experiment

See three line-to-line voltages move together, then connect their phase relationship to RMS values, power factor, and the power triangle.

Open the phasor lesson