conduction of the transistor pair q1 q2 current is drawn through the inductive coil l1 and the output capacitor c1 the current induces in the inductive coil l1 a magnetic field representing stored electrical energy in addition the resultant induced voltage across the coil l1 meters current flow to thereby limit the change in output voltage across the capacitor c1 when the winding 14 of the transformer t1 is pulled lower than the reference voltage v the transistor pair q1 q2 is switched 34 off 34 and the magnetic field of the inductive coil l1 collapses releasing its stored energy as an inductive kick once the inductive kick voltage exceeds the break down clamp level voltage of the diodes cr cr3 current resumes flowing through the coil l1 and stored energy is returned by the transfer diodes cr2 cr3 to the power supply e shortly thereafter the reference voltage u becomes more negative than the voltage at winding 14 of the transformer t1 and the transistor pair q1 q2 is again switched 34 on 34 this switching action slows down when a lighter load is present and speeds up for heavier loads and may reach a 200 khz rate as shown in fig6 c the voltage at the winding 14 of the transformer t1 has.