Circuit for generating a deflection current through the field deflection coil of a picture display device.

摘要

To reduce both the number of capacitors and the number of connecting terminals, the circuit comprises a sawtooth generator (1), a combining stage (2, 5-8), a multiplying circuit (12) and an amplifier (18). Applied to the combining stage (2, 5-8) is a sawtooth signal generated by the sawtooth generator (1) and also a sawtooth signal originating from a feedback (26) and the combining stage (2, 5-8) generates three linear combinations of these input signals. Two linear combinations are applied to the multiplying circuit (12) for obtaining a parabolic signal which is applied to a signal input terminal (20) of the amplifier (18), whereas the third linear combination is applied to the feedback input terminal (19) of the amplifier (18). The series arrangement of the deflection coil (24) and a seperating capacitor (25) is coupled to the output terminal (22) of the amplifier (18), a feedback network (26) being included between the said series network and the combining stage.