Data signals isolating device for electrical power distribution network, has high pass filter blocking energy signal for discriminating data signal, and insulation transformer adapted to extract discriminated data signal

摘要

#CMT# #/CMT# The device has a high pass filter (420) blocking an energy signal for discriminating a data signal. A negative feedback loop cancels the discriminated data signal at a junction point of communication segments. An insulation transformer (430) is adapted to extract the discriminated data signal, and an operational amplifier (470) is used in an inverter to inverse the data signal. #CMT# : #/CMT# An independent claim is also included for a method of isolating data signals between communication segments of electrical energy distribution network. #CMT#USE : #/CMT# Used for isolating data signals between communication segments of an electrical power distribution network (claimed) that is utilized for distributing electric power in a private environment such as a work place or dwelling. #CMT#ADVANTAGE : #/CMT# The high pass filter blocks the energy signal for discriminating the data signal, so that only less current passes through the isolation device and the device is made with small dimensions to consume very little energy, thus simplifying the design of the data signal isolating device. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a combination of low pass filter and a coupling network to isolate communication segments. 410 : Filter unit 420, 440 : High pass filters 430 : Insulation transformer 450, 455 : Coupling elements 470 : Operational amplifier.