Isolation transformer for a magnetic deflection yoke

Details Isolation transformer for a magnetic deflection yoke Isolation transformer for a magnetic deflection yoke

1978-12-22

1980-08-05

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315388, H01J 2970, H01J 2976

Patent

active

042164141

ABSTRACT:
Each orthogonal driver channel for the magnet deflection yoke of a conventional CRT includes a simple bifilar wound transformer which is connected so that the deflection current waveform passes therethrough. The transformer effectively minimizes the inherent parasitic capacitance between the two windings of the magnetic deflection yoke as it affects a high frequency input signal presented to the input terminal of the high gain operational amplifier. However, the impedance introduced within the feedback loop of the operational amplifier is minimal with respect to an input signal to either driver channel, and thus no significant distortion is presented to the current waveform driving each winding.

REFERENCES:
patent: 2891192 (1959-06-01), Goodrich
patent: 3428855 (1969-02-01), McDonald
patent: 3544810 (1970-12-01), McDonald et al.

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