A first voltage-to-current converter (Q07,U06A) responsive to a picture height adjustment control signal (V-SIZE) generates a first current (IURAMP) in a capacitor (C03) for producing a trace portion of a sawtooth signal (VSAW) in the capacitor having a rate of change that is adjustable in accordance with an adjustment of the control signal. A second voltage-to-current converter (Q09,U02A) responsive to the control signal generates a second current (I0) in a resistor (R09) for producing a third signal (base voltage of U01C) that is adjustable in accordance with the control signal. The sawtooth and third signals are coupled via a differential amplifier (U01B,U01C) to a vertical deflection winding (Ly,Fig. 1c) to produce a vertical deflection current (iy) in accordance with a difference between the sawtooth and third signals such that picture height adjustment does not affect vertical centering.