SWR Protection Circuit | RF Circuits

Monday, January 30, 2012

SWR Protection Circuit

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This scheme is an SWR meter, which is quite simple and easily built. Once you make a directional coupler, the results will be displayed with the measure led meters as a ratio SWR.


IC used in the scheme SWR meter is an LM3914, which are available on the market. Use non-inductive resistor (carbon-film or metal-oxide).

Complete set of SWR protection circuit schematic, see example image below to prototype soldering its components and the layout..

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