CIRCUITO D'ALIMENTAZIONE A BATTERIA TAMPONE PER INTERFACCIA DI LINEA TELEFONICA D'ABBONATO.

摘要

An arrangement for providing a subscriber line with an operating potential. The energy to the line is transferred thereto inductively at a fixed frequency and includes the rectification means on the subscriber side of the inductor. The amount of energy transferred to the line is controlled by pulse width. The control pulse width circuit includes means to decrease the energy transfer above a level at which a subscriber station internal regulation would be defeated.