Title :
Analysis of an overload-protected current-feedback magnetic multivibrator
Author :
Katsuki, Akihiko ; Matsushima, Masahiro ; Ouchiyama, Masaki
Author_Institution :
Dept. of Comput. Sci. & Electron., Kyushu Inst. of Technol., Fukuoka, Japan
Abstract :
A detailed analysis is presented of our original overload-protected current-feedback magnetic multivibrator. Since current-feedback magnetic multivibrators are highly efficient and are suitable for high-frequency operation, they are widely used as power sources for electronic equipment. Unlike voltage-feedback multivibrators, however, their circuits have no ability to protect themselves from overloading. We therefore proposed a new current-feedback multivibrator with overload protection. In this paper, the conditions for cessation of oscillation are derived by using our model of bipolar junction transistors. This model takes account of power dissipation, because the common-emitter static forward current transfer ratio depends on the collector current and the junction temperature
Keywords :
bipolar transistor circuits; bipolar transistors; circuit oscillations; equivalent circuits; feedback; multivibrators; power supplies to apparatus; protection; bipolar junction transistors; collector current; common-emitter static forward current transfer ratio; current-feedback magnetic multivibrator; electronic equipment; high-frequency operation; junction temperature; oscillation cessation; overload-protection; power dissipation; power sources; Circuit faults; Computer science; Feedback circuits; Magnetic analysis; Magnetic circuits; Magnetic cores; Power supplies; Saturation magnetization; Transformer cores; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE
Conference_Location :
Baveno
Print_ISBN :
0-7803-3500-7
DOI :
10.1109/PESC.1996.548700
