Astable, magnetically coupled multivibrator

An astable, magnetically coupled multivibrator circuit comprising

• a first power input terminal;
• a second power input terminal;
• a first power capacitor connected on one side to the first power input terminal;
• a second power capacitor connected on one side to the second power input terminal and connected on a second side to a second side of the first power capacitor;
• a first switching transistor having two rectifying electrodes including emitter and collector and having a base where a first rectifying electrode of the first switching transistor is connected to the first side of the first power capacitor;
• a second switching transistor having two rectifying electrodes including emitter and collector and having a base where a first rectifying electrode of the second switching transistor is connected to the first side of the second power capacitor;
• a first transformer winding connected at a first end to the second side of the first power capacitor and to the second side of the second power capacitor and connected at a second end to a second rectifying electrode of the first switching transistor and to a second rectifying electrode of the second switching transistor;
• a series connection of an ohmic resistance and of a second transformer winding connected at a first end to the second rectifying electrode of the first switching transistor and to the second rectifying electrode of the second switching transistor and connected at a second end to the base of the first switching transistor and to a base of the second switching transistor;
• a current controlled inductor connected in parallel to the series connection for setting the frequency of the multivibrator, where the inductor is an electronic component which can be controlled by a control current and which inductor comprises two ferromagnetic cores, which two ferromagnetic cores are independent of each other, which two ferromagnetic cores have the same properties and are disposed coaxially relative to each other and are formed as a ring each closed in itself, a control winding which winds around the two ferromagnetic cores jointly, and an induction winding, which forms two partial windings connected in series and which winds around the two ferromagnetic cores in each case separately, where the sense of direction of the control winding and of the partial windings is such that currents passing through the control winding and the partial windings generate magnetic fluxes in the cores such that the magnetic fluxes are of the same direction in one of the cores and in opposite direction in a second one of the ferromagnetic cores, where the functional dependence of a magnetic flux density in a core on the magnetic field strength in that core exhibits a course for the core material employed, which course exhibits, over its full region, an about uniform curvature and no saturation bend, where the core is of a soft magnetic material and thereby a course is present which is substantially identical for increasing and decreasing field strength, and where there are two magnetic field strength values such that the ratios of the slope of the course are at least 1 to 100.