disclosed is a circuit for adjusting a horizontal center of a raster displayed on a monitor crt , which includes a current generating circuit which can control an amount of a direct current flowing through a horizontal deflection yoke of the monitor based on a control voltage , a first voltage , and a second voltage . a control part generates the control voltage in response to a center adjustment signal . a voltage generating circuit generates the first and second voltages , respectively . the first voltage has a higher potential than that of a b + voltage which is applied to the horizontal deflection yoke , and the second voltage has a lower potential than that of the b + voltage . the current generating circuit either generates a first current flowing into the horizontal deflection yoke to increase the direct current or a second current flowing out therefrom to decrease the direct current , such that the horizontal center of the raster is controlled .