Stabilized power supply with very high efficiency through switching series regulation.

摘要

The stabilised power supply comprises a mains transformer (5) followed by a single-phase or multi-phase rectifier (6) and by an integrator. The positive output of the bridge is connected to the negative input of a differential voltage regulator (8). The positive output of the regulator is connected directly to the load (13). The negative output of the bridge is connected to earth. The differential voltage is regulated by a negative-feedback loop which neutralises the upstream and downstream variations, as well as the residual ripples. This differential voltage (Udiff) is obtained through an independent switch-mode source with very high efficiency (UI). It provides an additional contribution of power which adds to the output power of the transformer. <IMAGE>