Stable static inverter with transistor multivibrator - has two output switches connected to opposite ends of output transformer primary and driven from transistor emitters

摘要

The static inverter has a stabilised d.c. voltage source (25) located in the collector circuit of the two oscillating transistors(2, 3) forming the inverter's multivibrator (1). The base of each transistor is cross-coupled by an RC circuit to the collector of the other. The transistor's emitters are connected via resistors (12, 13) to a temperature-dependent resistor (14). The other end of the temperature-dependent resistor is connected to the junction between the emitters of two transistor switches (10, 11) driven by the two oscillating transistors. The collectors of the transistor switches are connected to opposite ends of an output transformer's primary (18).