Fast recovery agc

Claim 1

A FAST RECOVERY CIRCUIT FOR AN AUTOMATIC GAIN CONTROL CIRCUIT INCLUDING SIGNAL AMPLITUDE REGULATING MEANS ADAPTED TO RECEIVE INPUT SIGNALS AND TO REGULATE THE AMPLITUDE THEREOF IN RESPONSE TO A CONTROL SIGNAL APPLIED THERETO, AND RECTIFIER MEANS COUPLED TO THE OUTPUT OF THE AUTOMATIC GAIN-CONTROL CIRCUIT FOR RECEIVING THE AMPLITUDE REGULATED INPUT SIGNALS AND TO DEVELOP A CONTROL SIGNAL HAVING A TRAILING EDGE INN RESPONSE THERETO, SAID FAST RECOVERY CIRCUIT INCLUDING IN COMBINATION, FILTER MEANS COUPLING THE RECTIFIER MEANS TO THE SIGNAL AMPLITUDE REGULATING MEANS FOR FILTERING THE CONTROL SIGNAL AND APPLYING THE SAME TO THE SIGNAL AMPLITUDE REGULATION MEANS, SAID FILTER MEANS BEING RESPONSIVE TO THE CONTROL SIGNAL TO STORE A POTENTIAL THEREIN, REGENERATIVE CIRCUIT MEANS HAVING AN INPUT CIRCUIT COUPLED TO THE FILTER MEANS FOR RECEIVING THE CONTROL SIGNAL AND AN OUTPUT CIRCUIT, CIRCUIT MEANS COUPLING SAID OUTPUT CIRCUIT OF SAID REGENERATIVE CIRCUIT MEANS TO SAID INPUT CIRCUIT OF SAID REGENERATIVE CIRCUIT MEANS AND SAID FILTER MEANS, SAID REGENERATIVE CIRCUIT MEANS BEING RESPONSIVE TO THE TRAILING EDGE OF THE CONTROL SIGNAL TO DEVELOP A DISCHARGE SIGNAL AT SAID OUTPUT CIRCUIT OF SAID REGENERATIVE CIRCUIT MEANS, SAID FILTER MEANS BEING RESPONSIVE TO SAID DISCHARGE SIGNAL WHEREBY SAID STORED POTENTIAL IS RAPIDLY REDUCED.