High voltage regulator

Claim 1

In a television receiver including an image display device and a deflection and high voltage generating circuit for supplying high voltage to said display device and for supplying deflection current, a regulator circuit comprising: supply means comprising a voltage source coupled to a variable reactance for supplying current to energy storage means during one portion of each deflection cycle; means for coupling said energy storage means to said deflection and high voltage generating circuit during another portion of each deflection cycle; regulation control means including an active current control device coupled to said deflection and high voltage generating circuit and to said variable reactance and being responsive to variations in said high voltage for varying said reactance to control said current supply to said energy storage means for controlling the current supply to said deflection and high voltage generating circuit to thereby regulate said high voltage; said regulation control means further including a two-terminal reference voltage source coupled to the control electrode of said active device and to a source providing pulses representative of high voltage variations, and integrating means coupled between the terminal of said reference voltage source remote from said control electrode and a point of reference potential for integrating said pulses coupled through said reference voltage source to said control electrode said reference voltage source providing a path for current stored in said integrating means such that said current renders said active current control device fully conducting relatively quickly when the voltage across said capacitor exceeds the combined voltage drops of said reference voltage source and the conducting threshold voltage of said active current control device.