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Air-Core Coil Inductance Calculator
The following is a design tool which calculates the inductance of an air core inductor
post 08 Feb 2024
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High-Q Coil Construction Techniques
High-Q coil inductors have something in common: the length of the coil can only be slightly longer than its diameter. In other words, high-Q coils have cube-like dimensions
Homebrew Your Own Inductors
Air-dielectric inductors can be made quite easily at home
Helical Coil
The inductance and self capacitance of a helical coil can be determined by entering its dimensions in the boxes above. The length of wire used is also calculated
Jar Capacitance Calculator For Coils
This calculator requires the use of Javascript enabled and capable browsers. The purpose of the calculator is to determine the capacitance value of the jar capacitor needed for the circuit's coil
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High-Q coil inductors have something in common: the length of the coil can only be slightly longer than its diameter. In other words, high-Q coils have cube-like dimensions
Air-dielectric inductors can be made quite easily at home
The inductance and self capacitance of a helical coil can be determined by entering its dimensions in the boxes above. The length of wire used is also calculated
This calculator requires the use of Javascript enabled and capable browsers. The purpose of the calculator is to determine the capacitance value of the jar capacitor needed for the circuit's coil
Linear loaded short dipole 21Mhz For my amateur radio activities on the HF bands I only have a 3.6 m wide balcony available for antennas. After some study I decided to experiment with a shortened dipole for the 15 m band
Rx antennas 4Square Rx Vertical Array My frequency design of 1.825 MHz a 90 degrees line would be 33,70 metersinstead of the previously calculated 33,27 m
A simple SWR Meter is to be used at HF An SWR meter provides information about how well matched is your antenna with the transmitter and how well power is being radiated