Period-to-rate converter having means for summing capacitor discharge curves

Claim 1

APPARATUS FOR DETERMINING THE REPETITION RATE OF A PULSATING VOLTAGE COMPRISING: SLOPE AND LEVEL DETECTING MEANS ADAPTED TO RECEIVE SAID PULSATING VOLTAGE AND OPERATIVE TO PRODUCE AN ELECTRICAL IMULSE AS SAID PULSATING VOLTAGE REACHES A PREDETERMINED VOLTAGE WITH A PREDETERMINED SLOPE; A PLURALITY OF CAPACITORS CONNECTED IN SERIES; A VOLTAGE SOURCE FOR CHARGING SAID CAPACITORS; A FIRST RELAY HAVING A PLURALITY OF NORMALLY OPEN AND CLOSED CONTACTS WITH SAID NORMALLY CLOSED CONTACTS CONNECTING EACH CAPACITOR OF SAID CAPACITORS IN PARALLEL WITH AN ASSOCIATED RESISTOR OF SAID VOLTAGE SOURCE; A DISCHARGING CIRCUIT FOR SAID CAPACITORS CONSISTING OF A SECOND PLURALITY OF RESISTORS CONNECTED IN SERIES, WITH THE LAST RESISTOR THEREOF BEING CONNECTED TO SAID LAST CAPACITOR; A SECOND RELAY HAVING A PLURALITY OF NORMALLY CLOSED CONTACTS AND AT LEAST ONE NORMALLY OPEN CONTACT, EACH NORMALLY CLOSED CONTACTS BEING CONNECTED TO AN ASSOCIATEDF NORMALLY OPEN CONTACT OF SAID FIRST RELAY AND CONNECTED TO SAID SECOND RESISTORS OF SAID SECOND PLURALITY OF RESISTORS WHEREBY UPON CLOSING SAID NORMALLY OPEN CONTACTS, EACH SECOND RESISTOR IS CONNECTED IN PARALLEL WITH AN ASSOCIATED CAPACITOR; VOLTAGE INDICATING MEANS CONNECTABLE TO SAID CAPAC-