Use of scr Deflection System to Achieve Power-Line Isolation

Discussed are possible options for isolating the SCR deflection system by means of its existing inductive components. More details are given for isolation on the high-voltage transformer. Several solutions are suggested that are different from conventional flyback designs and that provide safe isolation. The triggering of the comutation and trace switches is arranged such that power supply and commutating parts become self-contained mechanically as well as electrically. Measurements of the characteristics of experimental circuits for a 110 °system are added to demonstrate performance capability and efficiency, Table I.