FIELD: equipment for control of amplitude of deviation signal of CRT. SUBSTANCE: device has controlled synchronized line scanning transistor which controls current in line scanning transformer. In response to switching signal V, scanning modulator switches conducting states of line scanning transistor. Line scanning transformer winding W for first blanking pulses is connected to synchronization circuit, which provides generation of output saw-tooth line frequency signal which has first constituent, which provides linear alternation within first half of blanking pulse, and second constituent which provides linear alternation and which duration is equal to duration of scanning pulse. Modulator of correction of raster signal in right-left scanning is connected to comparator for generation of switching signal V. In response to modulating and saw-tooth signals, comparator generates switching signal V, which first polarity prevents conductance in line scanning transistor, and which second polarity renders line scanning transistor conducting. First polarity of switching signal starts within first half of blanking pulse duration; second polarity starts within rest of line scanning signal duration. EFFECT: improved quality of image. 15 cl, 4 dwg
