Abstract: A constant-voltage transformer for stabilized power supply includes a primary coil and a secondary coil connected across a tuning capacitor. A magnetically continuous magnetic core links both the primary coil and the secondary coil, and a magnetically discontinuous magnetic core links the secondary coil but not the primary coil. Another discontinuous magnetic core may link the primary coil but not the secondary coil, and a compensating coil may be linked by this core only. Preferred designs have an abrupt cut-off at a load current only a little greater than design value, so that a dangerously high current can never be drawn, even into a total short circuit.

Abstract: An inductor having a coil member commonly wound on a couple of closed magnetic circuits made of a soft magnetic material. A magnetic gap is provided at a part of the soft magnetic material of at least one of the two closed magnetic circuits, and a permanent magnet providing a magnetic bias is inserted in the magnetic gap. This inductor is used in series between a DC power source providing a superimposed current of a DC current and an AC current and a load. The inductance of the inductor is very large with respect to a small DC current, while it reduces sharply when the applied DC current increases to be a certain value to show a substantially constant low value with respect to a DC current value beyond the certain value.

Abstract: For use in the deflection circuitry of a cathode ray tube, such as with a television receiver picture tube, a single pincushion correction transformer providing both vertical and horizontal correction. The transformer includes an E core having a control winding provided around the central leg, a horizontal correction winding provided on one outer leg and a pair of phase opposed windings on the other leg to minimize cross modulation and sensitivity to stray magnetic fields.