公开(公告)号：DE69935961D1

公开(公告)日：2007-06-14

申请号：DE69935961

申请日：1999-12-30

Applicant: ST MICROELECTRONICS SRL

Inventor： ROSSI WALTER ,  LARI FERDINANDO ,  ANTONINI CARLO ,  CONSIGLIO PIETRO ,  VERGANI LUIGI

IPC: H04M19/02

Abstract: A subscriber's telephone system is presented that includes at least one driver circuit connected to Tip and Ring terminals. An additional network is connected between an output of the driver circuit and the Ring terminal. This additional network includes a suitably dimensioned capacitor and a diode limiter connected in parallel with each other to minimize the overall voltage while maintaining a desired battery mean value.