Single-layer air coil in a screen

The program allows you to calculate the inductance Le of a single-layer coil with a shield. The inductance value L of an unshielded coil is determined using the same principle as described on the page regarding determining the inductance of a single-layer air coil. The principle for calculating inductance was taken from the book "Construction and Assembly of Amateur Radio Systems" by Zbigniew Faust.

cewka1warstwekran.gif (3009 bytes)

Body diameter D

[cm]

Winding length l

[cm]

Number of turns n

-

Screen diameter De

[cm]

Screen height le

[cm]

Inductance L (without shield)

[mi.gif (850 bytes)H]

Inductance Le (with shield)

[mi.gif (850 bytes)H]

Practical notes:

  1. Please note that the use of a shield reduces the coil's inductance.

  2. Minimum distance of the coil winding edge (see drawing) from the chassis h = D.

  3. When entering data, remember that it is physically impossible for the coil body diameter D to be greater than the screen diameter De, or for the winding length on the coil body l to be greater than the screen height le. Entering incorrect values will result in error messages appearing in the appropriate data fields.

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