Power Electronics

Telecomunications




Power electronics is widespread in the telecommunications industry. It is actually one of the largest users of power supplies and batteries. The uses range from ultra-reliable backup power systems that keep telephones working under all conditions to small supplies for cordless phones. This application area has its own major annual conference, the International Telecommunications Energy Conference (INTELEC).

 

 

A typical power system for a "central office" in a telephone network might have a a 5-kW power converter system for telecommunication system. This might comprise a front-end off-line power-factor-correction (PFC) boost converter to support any possible ac utility input, followed by two 2.5-kW forward converters to support high output current for the telehone system's 48 V dc distributed bus.

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