Voltage regulator for pulsed voltage power supplies

A voltage regulator for a flyback-type voltage supply, said supply having a deflection yoke circuit (100, 170, 150, 120, and 110) connected to the primary of a flyback transformer (130), and said supply being capable of generating a series of unregulated voltage flyback pulses (E.sub.P) at said primary in order to produce an unregulated voltage (V.sub.XH) at the output of said supply, said voltage regulator comprising:

• first means (370, 380) connected to the secondary of said flyback transformer (130) for producing voltage feedback signals (V.sub.HVS) proportional to the magnitude of said output voltage (V.sub.XH),
• second means (T1) connected to said primary of said flyback transformer (130) for producing flyback timing signals (V.sub.FBS) corresponding to the time for generation of each said flyback pulses (E.sub.P),
• third means (T2) for producing a reference voltage (V.sub.REF), and
• means (360, 300) operatively connected to the primary of said flyback transformer (130) and receptive of said voltage feedback signals (V.sub.HVS) from said first producing means, of said flyback timing signals (V.sub.FBS) from said second producing means, and of said reference voltage (V.sub.REF) from said third producing means for applying sufficient additional voltage (E.sub.A) during said generation time to the primary input of said flyback transformer (130) to maintain the voltage feedback signal (V.sub.HVS) substantially equal to the reference voltage (V.sub.REF) thereby maintaining the combined voltage pulses (E.sub.P and E.sub.A) near a regulated level (E.sub.PD).

A voltage regulator for a flyback-type voltage supply, and said supply having a deflection yoke circuit (100, 170, 150, 120, and 110) connected to the primary of a flyback transformer (130), and said supply being capable of generating a series of voltage flyback pulses (E.sub.P) at said primary in order to produce an unregulated voltage (V.sub.XH) at the output of said supply, said voltage regulator comprising:

• first means (370, 380) connected to the secondary of said flyback transformer (130) for producing voltage feedback signals (V.sub.HVS) proportional to the magnitude of said output voltage (V.sub.XH),
• second means (T1) receptive of said flyback pulse (E.sub.P) for producing flyback timing signals (V.sub.FBS) corresponding to the time for generation of each said flyback pulses, (E.sub.P),
• third means (T2) for producing a reference voltage (V.sub.REF), and
• means (360, 300) operatively connected to the primary of said flyback transformer (130) and receptive of said voltage feedback signals (V.sub.HVS) from said first producing means, of said flyback timing signals (V.sub.FBS) from said second producing means, and of said reference voltage (V.sub.REF) from said third producing means for applying sufficient additional voltage (E.sub.A) to each of said flyback pulses (E.sub.P) in order to maintain the high voltage feedback signal (V.sub.HVS) substantially equal to the reference voltage (V.sub.REF).

A voltage regulator for a flyback-type voltage supply, said supply having a deflection yoke circuit (100, 170, 150, 120, and 110) connected to the primary of a flyback transformer (130) for generating a series of high voltage flyback pulses (E.sub.P), said supply producing an unregulated output voltage (V.sub.XH), said voltage regulator comprising:

• an energy storage transformer (300) having its secondary interconnected in series with said primary of said flyback transformer (130),
• first means (370, 380) connected to said output of said supply for producing voltage feedback signals (V.sub.HVS) proportional to the magnitude of each of said high voltage flyback pulses (E.sub.P),
• second means (T1) receptive of said flyback pulse (E.sub.P) for producing flyback timing signals (V.sub.FBS) corresponding to the generation of said high voltage flyback pulses (E.sub.P),
• third means (T2) for producing a reference voltage (V.sub.REF), and
• means (360) receptive of said voltage feedback signals (V.sub.HVS) from said first producing means, of said flyback timing signals (V.sub.FBS) from said second producing means, and of said reference voltage (V.sub.REF) from said third producing means for applying sufficient voltage (E.sub.A) to the primary input of said energy storage transformer (300) during the generation of each said flyback pulse (E.sub.P) to maintain the high voltage feedback signal (V.sub.HVS) substantially equal to the reference voltage (V.sub.REF) thereby maintaining the combined voltage pulses (E.sub.P and E.sub.A) near a regulated level (E.sub.PD), said flyback voltage pulse (E.sub.P) being capable of supplying more than fifty percent of the magnitude of said regulated voltage pulse (E.sub.PD).

A voltage regulator for a flyback-type high voltage supply, said supply having a deflection yoke circuit (100, 170, 150, 120, and 110) connected to the primary of a flyback transformer (130) for generating a series of flyback pulses (E.sub.P) at the primary of said flyback transformer (130) in order to provide an unregulated output voltage (V.sub.XH), said voltage regulator comprising:

• an energy storage transformer (300) having its secondary interconnected in series with said primary of said flyback transformer (130),
• a switch (350) connected to the primary of said energy storage transformer (300) for selectively applying energy to the aforesaid primary,
• first means (370, 380) connected to said supply output for producing voltage feedback signals (V.sub.HVS) proportional to the magnitude of said output voltage (V.sub.XH),
• second means (T1) connected to said primary of said flyback transformer (130) for producing flyback timing signals (V.sub.FBS) corresponding to the generation of said high voltage flyback pulses (E.sub.P),
• third means (T2) for producing a reference voltage (V.sub.REF), and
• a control circuit (360) receptive of said voltage feedback signals (V.sub.HVS) from said first producing means, of said flyback timing signals (V.sub.FBS), from said second producing means, and of said reference voltage (V.sub.REF) from said third producing means for selectively activating said switch, at a point in time before the generation of each of said voltage flyback pulses (E.sub.P), said control circuit (360) being capable of activating said switch (350) earlier in time to the generation of said voltage flyback pulse (E.sub.P) when a greater difference between the reference voltage (V.sub.REF) and the high voltage feedback signal (V.sub.HVS) exists in order to increase the amount of energy stored in said energy storage transformer (300) so that the addition of said applied energy (E.sub.A) to said flyback pulse (E.sub.P) causes the aforesaid difference to be nearly zero and said control circuit (360) being further capable of deactivating said switch (350) immediately after the start of the generation of said flyback pulse (E.sub.P) in order to apply said additional voltage (E.sub.A) to said primary of said flyback transformer (130).

A voltage regulator for a flyback-type voltage supply, said supply having a deflection yoke circuit (100, 170, 150, 120, and 110) connected to the primary of a flyback transformer (130) for generating a series of flyback pulses (E.sub.P) in order to provide an unregulated output voltage (V.sub.XH) at the secondary of said flyback transformer, said voltage regulator comprising:

• means (300 and 350) connected to the primary of said flyback transformer (130) for selectively applying energy to the primary of said flyback transformer (130),
• first means (370, 380) connected to the secondary of said flyback transformer (130) for producing feedback signals (V.sub.HVS) proportional to the magnitude of each of said flyback pulses, (E.sub.P),
• second means (T1) receptive of said flyback pulses (E.sub.P) for producing flyback timing signals (V.sub.FBS) corresponding to the generation of each of said flyback pulses (E.sub.P),
• third means (T2) for producing a reference voltage (V.sub.REF), and
• a control circuit (360) receptive of said feedback signals (V.sub.HVS) from said first producing means, of said flyback timing signals (V.sub.FBS) from said second producing means, and of said reference voltage (V.sub.REF) from said third producing means for selectively activating said applying means before the generation of each of said voltage flyback pulses (E.sub.P), said control circuit (360) being capable of activating said applying means (300 and 350) earlier in time when a greater difference between the reference voltage (V.sub.REF) and the feedback signal (V.sub.HVS) exists in order to increase the amount of energy (E.sub.A) applied to said primary so that the addition of said applied energy (E.sub.A) to said flyback pulse (E.sub.P) causes the aforesaid difference to be nearly zero and said second circuit (360) being further capable of deactivating said applying means (300 and 350) immediately after the start of the generation of said flyback pulse (E.sub.P) in order to apply said additional voltage (E.sub.A) to said primary of said flyback transformer (130).

A voltage regulator for a flyback-type high voltage supply, said supply having a deflection yoke circuit (100, 1770, 150, 120, and 110) connected to the primary of a flyback transformer (130) for generating a series of flyback pulses (E.sub.P) in order to provide an unregulated output voltage (V.sub.XH) at the secondary of said flyback transformer (130), said voltage regulator comprising:

• an energy storage transformer (300) having its secondary interconnected in series with said primary of said flyback transformer (130),
• first means (370, 380) connected to said secondary of said flyback transformer (130) for producing voltage feedback signals (V.sub.HVS) proportional to the magnitude of each of said high voltage flyback pulses (E.sub.P),
• second means (T1) connected to said primary of said flyback transformer (130) for producing flyback timing signals (V.sub.FBS) corresponding to the generation of said high voltage flyback pulses (E.sub.P),
• third means (T2) for producing a reference voltage (V.sub.REF), and
• means (360) receptive of said high voltage feedback signals (V.sub.HVS) from said first producing means, of said flyback timing signals (V.sub.FBS) from said second producing means, and of said reference voltage (V.sub.REF) from said third producing means for applying sufficient voltage (E.sub.A) to the primary input of said energy storage transformer (300) to maintain the high voltage feedback signal (V.sub.HVS) substantially equal to the reference voltage (V.sub.REF) for each of said high voltage flyback pulses (E.sub.P) thereby maintaining the combined voltage pulses (E.sub.P and E.sub.A) at a regulated level (E.sub.PD).