Deflection yoke and cathode ray tube

A deflection yoke for use in a color cathode ray tube, comprising:

• a horizontal deflection coil;
• a vertical deflection coil;
• an annular core;
• a first magnetic coil pair consisting of a first coil and a second coil;
• and
• a second magnetic coil pair consisting of a third coil and a fourth coil;
• wherein said first magnetic coil pair and said second magnetic coil pair are so positioned as to be opposite horizontally to the rear end of said deflection yoke;
• said first and fourth coils are connected in parallel to constitute a first electric coil pair for generating magnetic fields in mutually reverse directions, while said second and third coils are connected in parallel to constitute a second electric coil pair for generating magnetic fields in mutually reverse directions;
• and said first and second electric coil pairs are connected in series to generate magnetic fields in mutually reverse directions;
• wherein said first and second electric coil pairs constitute a bridge circuit in combination with a variable resistor, and said bridge circuit is connected in series to said vertical deflection coil.

A color cathode ray tube having a deflection yoke and an inline type electron gun disposed horizontally, said deflection yoke comprising:

• a horizontal deflection coil;
• a vertical deflection coil;
• an annular core;
• a first magnetic coil pair consisting of a first coil and a second coil;
• and
• a second magnetic coil pair consisting of a third coil and a fourth coil;
• wherein said first magnetic coil pair and said second magnetic coil pair are so positioned as to be opposite horizontally to the rear end of said deflection yoke;
• said first and fourth coils are connected in series to constitute a first electric coil pair for generating magnetic fields in mutually reverse directions, while said second and third coils are connected in series to constitute a second electric coil pair for generating magnetic fields in mutually reverse directions;
• and said first and second electric coil pairs are connected in series to generate magnetic fields in mutually reverse directions;
• wherein said first and second electric coil pairs constitute a bridge circuit in combination with a variable resistor, and said bridge circuit is connected in series to said vertical deflection coil.

A color cathode ray tube having a deflection yoke and an inline type electron gun disposed horizontally, said deflection yoke comprising:

• a horizontal deflection coil;
• a vertical deflection coil;
• an annular core;
• a first magnetic coil pair consisting of a first coil and a second coil;
• and
• a second magnetic coil pair consisting of a third coil and a fourth coil;
• wherein said first magnetic coil pair and said second magnetic coil pair are so positioned as to be opposite horizontally to the rear end of said deflection yoke;
• said first and fourth coils are connected in parallel to constitute a first electric coil pair for generating magnetic fields in mutually reverse directions, while said second and third coils are connected in parallel to constitute a second electric coil pair for generating magnetic fields in mutually reverse directions;
• and said first and second electric coil pairs are connected in series to generate magnetic fields in mutually reverse directions;
• wherein said first and second electric coil pairs in combination with a variable resistor constitute a bridge circuit, and said bridge circuit is connected in series to said vertical deflection coil.