Power amplifier

Abstract

Abstract The invention relates to a power amplifier for amplifying analog input signals, which is constructed of N switched-mode amplifiers (V1-VN), which are connected in series at the output end, and a subsequent low-pass filter (FL, FC). The switched-mode amplifiers are implemented as switched-mode amplifiers which are switched on the secondary side and are driven by pulse-duration-modulated pulse sequences (UST1, USTN) which are derived from the input signal (UNF) to be amplified and which are in each case phase shifted with respect to one another by 360 DEG /N. In these switched-mode amplifiers, the mains transformer (TR) handles the DC isolation of switched-mode amplifier output and feed voltage input. <IMAGE>

Inventors

• 👤 Horst Beeken
• 👤 Klaus Dipl.-Ing. Weber

Bibliographic Details