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Balun trasfomazione multipla


Balun trasfomazione multipla

Con un rapporto 4:1 portiamo ad 1/4 l'impedenza che presenta l'antenna, con un rapporto 9:1 ad 1/9 e con un rapporto 16:1 ad 1/16. Alcuni esempi di elevati valori d'impedenze che potrebbe presentare un'antenna, adattate tramite balun

post 20 Oct 2024


Toroid & balun Links

199



50ohm to 200ohm
Balanced and unbalanced systems can produce common mode currents that cause equalizing currents at the interface of both systems. And exactly at this interface baluns are switched

9:1 UnUn Project
known as a Magnetic Longwire Balun, it is an impedance transformer whose purpose is to feed a high impedance long wire from a 50ohm unbalanced coaxial input. With a 9:1 turns ratio, this gives 450ohm output impedance for the long wire

A cheap easy 1:1 balun
My Baluns are working well on both my 40M resonant dipole and my G5RV antennas

A Cost Effective Current-Mode 1:4 Balun
A cost effective current-mode 1:4 balun can be constructed from two lengths of coax, two ferrite rods, some electrical tape, cable ties, a length of PVC water-pipe and some connectors


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