過負荷保護・周波数補償された電流帰還型磁気マルチバイブレータの半導体素子における電力損を考慮した解析  [in Japanese] Analysis of an Overload -Protected Frequency-Compensated Current-Feedback Magnetic Multivibrator Taking Accout of Power Dissipation in Semiconductor Devices  [in Japanese]

Current-feedback magnetic multivibarators are highly efficiint and reliable. However, these circuits have no ability to protect themselves from overloading, and the oscillation frequency changes with the load current. We previously proposed an improved multivibrator with overload proteciton and frequency compensation. In this paper, the condition for cessation of oscillation and that for fixed frequency 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 and the junction voltages depend on the junction temperature.