METHOD FOR INJECTING SIGNAL CURRENTS INTO THREE-PHASED ELECTRIC NETWORK Russian patent published in 2007 - IPC H04B3/54 

FIELD: electric engineering, possible use during organization of communication channels with use of three-phased electric networks (0,4-35) kV without processing thereof with high frequency rejecters.

SUBSTANCE: given generator is different from analogs because time of closed position of key is determined as optimal and is equal to where To - period of signal sequence. Efficiency of generator is increased because discharge capacitor and limiting resistor are absent in circuit. As key, transistor is used in place of thyristor with forced closure, thus substantially improving commutator part of generator and increasing reliability of its operation. Generator of prototype is enabled for linear voltage of 380 V, and disclosed generator - for phase voltage, resulting in increased reliability.

EFFECT: increased efficiency of generator realizing disclosed method by 25%.

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