H - Electricity – 04 – B
Patent
H - Electricity
04
B
340/79
H04B 3/54 (2006.01) H04B 3/56 (2006.01)
Patent
CA 1163343
RD-12124 METHOD OF, AND APPARATUS FOR, INSERTING CARRIER FREQUENCY SIGNAL INFORMATION ONTO DISTRIBUTION Abstract of the Disclosure Power line carrier frequency signals are provided at a distribution transformer primary winding by controlled current injection onto the neutral and phase conductors of the dis- tribution transformer secondary winding circuit, with the direction of current flow in each half of the secondary winding being con- trolled in in-phase additive fashion. Apparatus for causing in-phase distribution secondary winding current flow includes a pair of electronic current control means supplying in phase currents to a pair of secondary windings of an auxiliary trans- former having its primary winding coupled to half of the distribution transformer secondary winding and having the auxiliary transformer secondary winding center tap coupled to local neutral through a band-stop filter and to the remaining distribution transformer secondary winding through a band-pass filter for augmentation of signal current flow into the dis- tribution transformer.
378184
Company General Electric
Eckersley Raymond A.
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