Transient Response of Junction Transistors in the Case of Inductive Load

Analysis of the transient responses of junction transistors in the case of inductive load is given in the paper. Principal relations characteristic for transient process, such as switching-on time, switching-on current value, switching-off voltage maximum value, etc., are derived. Special attention is paid to the aperiodic case and the conditions to be fulfilled in order to keep the collectoremitter switching-off voltage under supply voltage value. Comparison of the experimental results of the small-signal transient response with the theoretical prediction shows a good agreement. In the case of large-signal transient response, the dependence of the characteristic parameters on collector current and collector voltage should be taken into account.