FIELD: electric engineering, possible use for transforming voltage 220V, 50 Hz to current of given amplitude and frequency, which is injected into phases B and C of three-phased electric communication line without its processing by high frequency rejecters.
SUBSTANCE: in accordance to the invention, power consumed by generator is decreased 3,5 times, "parasite" currents at frequencies f0±300Hz; f0±600Hz are removed, air transformer is removed from generator circuit and inductance coil is used instead of the transformer, elements of generator key are not under rectified linear voltage of 380V, but under rectified phase voltage of 220V instead.
EFFECT: increased efficiency.
2 dwg
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