Protective circuit for partial excitation in converter transformer

Abstract

Abstract PURPOSE: To prevent a transformer from partial excitation by varying time widths of base driving pulse signals alternately in response to the storage time of each of a pair of switching transistors which repeat ON-OFF alternately. CONSTITUTION: When a transformer T is excited partially, collector currents i c1 and i c2 of transistors TR 1 and TR 2 are detected by collector current detectors DET 1 and DET 2 and converted into DC voltages e 1 and e 2 . By comparing these two detected voltages e 1 and e 2 through a differential amplifier DEF the driving pulse width is controlled so that the current applied to a pair of switching transistors TR 1 and TR 2 may be equal. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Akio Konemori
• 👤 Yuichiro Kawamura

Bibliographic Details