A circuit arrangement for a brake system with anti-lock control generates pulse-shaped brake pressure control signals. In order to increase the pressure again after a pressure drop, the brake pressure is first controlled with a steep gradient and then with a flatter gradient. This is achieved by means of a variable pulse (P1) and by means of short constant pulses (P2) in rapid succession. Switch circuits determine the pulse and pulse pause times (T1, T2, Tk) which determine the pressure increase - from the duration of the presure build-up (T1) during the build-up with steep increase in the preceding cycle - from the duration (T1 + nT2) of the total pressure build-up in the preceding cycle - from the duration (T0) of the preceding pressure build-up. The pulse times are chosen so that at constant coefficient of friction and uniform preliminary pressure the locking limit of the wheel is attained again after a predetermined time interval or after a predetermined number of pulses. The duration of the variable and constant pressure build-up pulses is computed from the pressure build-up of the preceding pressure or read from a stored table.