Television receiver having an automatic radiofrequency resonant circuit adjustment circuit

摘要

In a television receiver having an automatic adjustment circuit for a radio frequency resonant circuit (3) of the receiver, using two carriers fed to the read frequency input of the receiver, the product of the amplitudes of the two carriers is formed by means of a detection circuit (37) coupled to an output (5) of the radio frequency circuit (3) and the adjustment setting of the resonant circuit is effected to a maximum value of this product (at 77), thus providing a simple, correct adjustment.