Telephone transductor equipment with pulse toroidal cores - has decoders in pyramid configuration with register to read pulses

摘要

The telephone transductor equipment may be integrated with any type of automatic selector and partic. with crossbar selectors. In can easily allow any change of subscriber equipment when the subscriber retains his original telephone number. The transductor equipment has a loop circuit comprising a current supply first decoder a toroidal core and strap assembly with diodes and a second decoder. Both decoders have a pyramid matrix configuration, the second decoder being inversed to the first encoder. Reading of the train of pulses to the transductor equipment is carried out by a register connected by an interface unit to the assembly.