Discriminator filter for remote control device using the wires of the electrical current supply network

摘要

Discriminator filter intended to be connected up between the electrical current supply network and an installation supplied by the said network and provided with means of remote control of its appliances through the current supply conductors, characterised in that all the branches of the filter and in particular the branches (L11, R11, C11, L21, C21, R21) situated at its two ends consist of damped resonance circuits whose tuning frequencies differ.