REGELSCHALTUNG ZUM ABGLEICH EINER LAUFZEITLEITUNG.

摘要

The circuit compensates a progression time lead (20) for a t.v. receiver. The lead (20) has a series connected all-pass stage of a least the second order of which the inductances are substituted by gyrators connected with capacities. During at least one line of the vertical blanking out period, the progression time lead is in a phase regulating circuit (17,18,30). This enables comparison with a line frequency signal so that the delay time of the all-pass limbs are regulated.