![]() When a balanced source is to be isolated from an unbalanced load, the impedance matching transformer is referred to as a balun. An asymetrical unblanced (single ended) line has one conductor connected to ground, such as coaxial cable. Twisted pair cable and ribbon cable are examples of balanced line cables. An asymmetrical unbalanced (differential) directions. Twisted pair cable are examples of balanced line cable. Matching the output impedance of the power source to the input impedance of the power source to the input impedance of an electrical load maximizes the power source from reflected energy and optimize circuit efficiency.Ī symmetrical balanced line has two conductors having equal current in opposite (differential) directions. Impedance mismatch in a circuit results in energy being reflected back to the source, reducing the amount of power available to the load and possibly causing damage to the power source.
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