Schmitt trigger circuit characterized by noise insensitivity

Claim 1

A TRIGGER CIRCUIT COMPRISING: (A) FIRST AND SECOND CURRENT CONDUCTING DEVICES, EACH CURRENT CONDUCTING DEVICE HAVING AN INPUT ELEMENT, A CONTROL ELEMENT AND AN OUTPUT ELEMENT; (B) COMMON CONNECTION MEANS CONDUCTIVELY COUPLING SAID INPUT ELEMENTS OF SAID FIRST AND SECOND CURRENT CONDUCTING DEVICES; (C) VOLTAGE DIVIDER MEANS INTERCOUPLING SAID CONTROL ELEMENT OF SAID SECOND CURRENT CONDUCTING DEVICE WITH SAID OUTPUT ELEMENT OF SAID FIRST CURRENT CONDUCTING DEVICE SUCH THAT SAID SECOND CURRENT CONDUCTING DEVIDE CONDUCT WHEN SAID FIRST CURRENT CONDUCTING DEVICE IS NON-CONDUCTING AND SUCH THAT SAID SECOND CURRENT CONDUCTING DEVICE IS RENDERED NON-CON DUCTING WHEN SAID FIRST CURRENT CONDUCTING DEVICE IS CONDUCTING; (D) FIRST RESISTOR MEANS CONNECTED TO THE OUTPUT ELEMENT OF SAID FIRST CURRENT CONDUCTING DEVICE; (E) SECOND RESISTOR MEANS HAVINGA LESSER VALUE THAN SAID FIRST RESISTOR MEANS CONNECTED TO THE OUTPUT ELEMENT OF SAID SECOND CURRENT CONDUCTING DEVICE THEREBY DETERMINING THAT THE VALUE OF THE FIRST CURRENT FLOWING THROUGH SAID FIRST CURRENT CONDUCTING DEVICEIS NOT AS GREAT AS THE VALUE OF THE SECOND CURRENT FLOWING THROUGH SAID SECOND CURRENT CONDUCTING DEVICE; (F) INDUCTIVE VOLTAGE DEVELOPING MEANS CONNECTED TO SAID COMMON CONNECTION AND RESPONSIVE TO SAID FIRST AND SECOND CURRENTS RESPECTIVELY FLOWING IN SAID FIRST AND SECOND CURRENT CONDUCTING DEVICES SUCH THAT WHEN AN INPUT SIGNAL IS APPLIED TO SAID FIRST CURRENT CONDUCTING DEVICE TO CHANGE THE STATE OF CONDUCTION THEREOF THE INITIAL VOLTAGE DEVELOPED ACROSS SAID TRANSIENT VOLAGE DEVELOPING MEANS AND APPLIED TO SAID COMMON CONNECTION RENDERS SAID INPUT ELEMENTS AT A VOLTAGE POLARITY AND A VOLTAGE VALUE WHICH PREVENTS SAID FIRST CURRENT CONDUCTING DEVICE FROM SPURIOUSLY RETURNING TO THE STATE OF CONDUCTION FROM WHENCE IT IS BEING CHANGED, IN RESPONSE TO NOISE SIGNALS LESS THAN A PREDETERMINED LEVEL SUPERIMPOSED UPON SAID INPUT SIGNAL.