Power Supply of Program Controlled Digital Exchanger Specification and Installation Consideration

Consideration is given to the high-speed and sensitive integrated circuit module of program controlled digital exchanger. The comparisons are made of the requisites of power source in terms of power distribution available, feeding system, main features and total power for the program controlled digital exchanger and electro-mechanical exchanger. The installation consideration is presented. Additionally performance specification and design features of lead batteries required are discussed.