Abstract

A signal transmission system includes: a switch component, a first choke component, a first conductive path and a second choke component that are connected in series between a power wire and a load; a third choke component and a resonant circuit that are connected in series between another power wire and a common node of the switch component and the first choke component; a second conductive path connected between the load and a common node of the third choke component and the resonant circuit; and a control block. Under control of the control block, a magnetic core of each choke component reaches magnetic saturation when the switch component does not conduct, and operates at magnetic saturation when the switch component conducts.

IPC Classes  ?

• H04B 3/54 - Systems for transmission via power distribution lines
• H04B 3/26 - Improving frequency characteristic by the use of loading coils
• H01F 27/24 - Magnetic cores
• H03H 7/01 - Frequency selective two-port networks

Abstract

A signal transmission system includes a switch component and a choke component each coupled to one of a first power wire and a second power wire, a first conductive path between the switch component and a load, a second conductive path between the choke component and the load, and a control block. The control block controls the switch component to not conduct when providing a control signal to the first and/or second conductive paths. When the switch component does not conduct, a magnetic core of the choke component does not reach magnetic saturation. When the switch component conducts, the magnetic core of the choke component operates at magnetic saturation.

IPC Classes  ?

• H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
• H03K 5/1252 - Suppression or limitation of noise or interference
• H04B 3/56 - Circuits for coupling, blocking, or by-passing of signals
• H04B 3/58 - Repeater circuits
• H03H 7/38 - Impedance-matching networks

Abstract

A power line communication control system for coupling between an power line and a load is disclosed. The exemplary system is capable of simultaneously distributing electrical power and transmitting communication signals with minimized interference there-between. The exemplary system includes an inductive coupling input terminal and an inductive coupling output terminal. Each of the input and the output terminals includes a pair of series-connected inductors having substantially identical inductance value. Accordingly, the system is capable of may deliver the household power signal under common mode transmission while transmitting the communication signal using differential mode transmission, thereby minimizing the interference between the power line AC current and the communication signal.

IPC Classes  ?

• H04B 3/54 - Systems for transmission via power distribution lines
• H02J 13/00 - Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the networkCircuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network