High voltage regulator for an integrated horizontal sweep system
AssigneeZenith Electronics Corporation
InventorBruce E. Messman
Life of this patent
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Abstract
A voltage regulator for a flyback-type high voltage supply having: a pulse transformer with its secondary interconnected in series with the primary of a flyback transformer; a control circuit for sensing the generation of a flyback pulse, a reference voltage, and a feedback voltage signal appearing at the output of the flyback transformer; and a switch for selectively applying energy to the primary of the pulse transformer while uniformly maintaining the flow of current through the primary of the flyback transformer.
Claims14
A circuit for generating a regulated high voltage signal comprising:
- means responsive to a horizontal drive signal for generating a series of flyback voltage pulses;
- control means for generating a corresponding series of regulation voltage pulses each of which occurs in at least partial time coincidence with a respective one of said flyback voltage pulses;
- means for combining each of said regulation voltage pulses with the corresponding one of said flyback voltage pulses to produce a combined output signal;
- and
- means for generating a reference signal, said control means being responsive to said reference signal and said combined output signal for adjusting the position of each of said regulation voltage pulses relative to the corresponding flyback voltage pulse to regulate the level of said combined output signal.
A circuit for regenerating a regulated high voltage signal comprising:
- means responsive to a horizontal drive signal for generating a series of flyback voltage pulses;
- control means responsive to said horizontal drive signal for generating a corresponding series of regulation voltage pulses each having substantially the same amplitude and pulse width and each occurring in at least partial time coincidence with a respective one of said flyback voltage pulses;
- means for combining each of said regulation voltage pulses with the corresponding one of said flyback voltage pulses to produce a combined output signal;
- and
- means for generating a reference signal, said control means being responsive to said reference signal and said combined output signal for adjusting the position of each of said regulation voltage pulses relative to the corresponding flyback voltage pulse to regulate the level of said combined output signal.
A regulated high voltage circuit comprising:
- means for generating a horizontal drive signal;
- means including a horizontal deflection coil responsive to said horizontal drive signal for generating a series of flyback voltage pulses;
- control means responsive to said horizontal drive signal for generating a corresponding series of regulation voltage pulses each of which occurs in at least partial time coincidence with a respective one of said flyback voltage pulses;
- flyback transformer means combining each of said regulation voltage pulses with the corresponding one of said flyback voltage pulses for producing a series of combined high voltage output pulses;
- means rectifying said series of combined high voltage output pulses for producing a rectified high voltage output signal;
- and
- means for generating a reference signal, said control means being responsive to said reference signal and said rectified high voltage output signal for adjusting the position of each of said regulation voltage pulses relative to the corresponding flyback voltage pulse to regulate the level of said rectified high voltage output signal.
Dependencies are inferred from the claim text.