Abstract:
A variable linearity coil has a coil which is wound around a first core, a permanent magnet for charging a bias magnetic field to the first core, a bias magnetic field adjusting coil which is wound around a second core, and an electrically insulating base for mounting thereon the coil, the permanent magnet, and the magnetic field adjusting coil. The first core and the second core are placed one on top of the other with a non-magnetic and shock-absorbing spacer in between. Alternatively, the first core and the second core may be placed one on top of the other with a non-magnetic spacer in between, and a combination of the first core, the second core and the non-magnetic spacer is mounted on the base with a shock-absorbing spacer between the combination and the base.
Abstract:
A wide-band horizontal linearity correction circuit includes: a primary line coil connected between a horizontal deflection yoke and an S-correction capacitor, the primary coil being wound around a first a core having a hysteresis characteristic; a secondary line coil wound around a second core adjacent the first core; a pair of permanent magnets of opposite polarities, disposed on either end of the first core; a microprocessor for supplying an analog linearity correction control signal in response to the variation of the frequency of a horizontal drive pulse signal; and a coil driver for driving the secondary line coil in response to the correction control signal supplied by the microcomputer. Accordingly, horizontal linearity can be corrected over an entire frequency band.
Abstract:
A continuously rectifiable linearity coil circuit having a saturated transformer serially connected with a deflection yoke of a computer monitor, a linearity coil and a control circuit. In a nearly saturated state, the inductance of the saturated transformer decreases when the input DC current increases. Accordingly, by changing the value of the current passing through the linearity coil, the wave form of the deflection current passing through the deflection yoke is changed so as to keep the horizontal linearity of the computer monitor optimal with respect to different input horizontal frequency signals.
Abstract:
A circuit for horizontal deflection in television picture display devices is described, in which a capacitor for correcting the tangential error by means of an S-shaped distortion of the deflection current is arranged in series with the horizontal deflection coil. This capacitor includes a series arrangement of two sub-capacitors (4, 5) of corresponding capacitance, at least the capacitor (5) which is not directly connected to the horizontal deflection coil (1) having a dielectric which is dependent on the direct voltage, and the junction point (6) of these two capacitors (4, 5) conveys a variable direct voltage.