gasrastereo.blogg.se - Air core inductor calculator awg

wire : Length of wire required to wind the inductor.įrequency dependent: (Text goes RED when selected frequency > SRF.

SRF : Self-resonant frequency (MHz) for the unloaded coil.

Rdc : DC resistance is calculated using conductor length divided by the conductor cross-sectional area, assuming a copper conductor.

C : Capacitance is calculated using Knight's 2016 paper on self-resonance and self-capacitance of solenoid coils.

L : Inductance is calculated using Nagaoka's equation incorporating his coefficient.

c : Distance between windings, measured from the conductor centers (mm).

⌀i : Inner coil diameter (mm) - corresponds to the diameter of the winding former.

Relative to the coil length is representative.

f : The frequency of interest (MHz) for some of the calculations.Ĭharacteristics on the left are independent of frequency, while the characteristics on the right are dependent on the selected frequency.Įach of the graphic representations attempt to keep the relative geometry correct, without exceeding the drawing boundary.

(Must be >= 1.1)Ī low-value will increase the resistance due to the proximity effect.

c/a : 'c' is the inter-winding spacing, and 'a' is the conductor diameter, so 'c/a' is the spacing ratio.

⌀b : Coil diameter in millimeters (mm).

Estimated equivalent AWG & SWG wire sizes are also displayed when appropriate.

⌀a : Conductor diameter in millimeters (mm).

RF Inductor Calculator was developed to help users predict the RF characteristics of a single-layer solenoid-style air-core inductor.