Note 8: Enter the coil winding density compact factor. Note 7: Enter the core relative permeability constant, k. Another example, a distance of 25mm means the magnetic field is calculated 10mm outside of the coil (30mm/2+10mm = 25mm). For example, if the coil bobbin width is 30mm, a distance of 15mm is at the coil edge. Enter zero for the magnetic at the center of the coil/solenoid. Note 6: The calculated magnetic at a distance from the center of the coil, see Figure 2. For DC, just leave the default 1kHz and use the DC parameters calculated below. Note 5: Enter the solenoid/coil operation frequency (sinewave). If the current is AC, this is the peak current. Note 3: Enter the number of turns in the coil or solenoid. Use Table 1 to enter the bare copper wire diameter. This diameter is used to calculate the resistance more accurately.
Table 2: Copper wire diameter WITHOUT coated insulation. Use Table 1 to enter the copper wire diameter. Table 1: Copper wire diameter with coated insulation. The coil width is same as the bobbin inner width. Note 2: Enter the length of the solenoid or coil. Copper inner radius must be larger than bobbin inner radius. Note the copper inner radius is not same as the bobbin inner radius. Note1 : Coil copper inner radius from the center to the first layer of copper.
