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US 5,331,532 AGranted
High voltage regulating circuit
AssigneeSony Corporation
InventorsKenji Iwai, Seiji Kawaberi, Akihiro Ueyama, Junzo Watanabe
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Abstract
A coil (11) is connected in series to a primary winding (1a) of a flyback transformer (1). A series circuit of a capacitor (15) and a switching circuit (12) is connected in parallel to the coil (11). By turning on and off the switching circuit (12), the connection of the capacitor (15) to the coil (11) is switched, to thereby connect or disconnect the coil (11) in an AC fashion. Therefore, it is possible to realize a high voltage regulating circuit which can be made inexpensive.
Claims9
A high voltage regulating circuit comprising:
- a flyback transformer circuit for generating a high voltage at its secondary winding that corresponds to a voltage input to its primary winding;
- an inductance connected to said primary winding of said flyback transformer circuit in series;
- a series circuit formed of a capacitor and a switching element and connected in parallel to said inductance;
- and
- a detecting circuit for detecting said high voltage from said secondary winding, said switching element being switched by an output from said detecting circuit.
2 more elements
Dependencies are inferred from the claim text.