Spoiler summary: The loop inductance of a circular loop is about 25nH per inch of circumference. Remember: before you start using rules of thumb, be sure to read the Rule of Thumb #0: Use rules of ...

Equipment: A flux model made from a 10 x 10 grid of nails and a square wire loop. What it does: The model shows how the flux ('number' of field lines) through a closed loop changes as the angle ...

The model shows how the flux ('number' of field lines) through a closed loop changes as the angle between the field lines and the loop changes. The relation between flux and angle may be ...

Home built probes and measurement tools. My favorite probes are square 1 inch loops built from stiff brass wire. I also build resistive voltage probes. I have made countless measurement devices for ...