Peak-to-peak a. c. signal measuring system using two complementary transistors having capacitor output means and a common input to derive proportional positive and negative peak voltages

Claim 1

A PEAK DETECTOR CIRCUIT FOR USE IN A SYSTEM FOR MEASURING THE DEVIATION OF A FREQUENCY MODULATED WAVE AND WHICH INCLUDES A PORTION FOR RECOVERING THE MODULATION SIGNAL FROM THE FREQUENCY MODULATED WAVE, SAID PEAK DETECTOR CIRCUIT INCLUDING IN COMBINATION; FIRST AND SECOND TRANSISTORS EACH HAVING INPUT AND OUTPUT MEANS, SAID FIRST AND SECOND TRANSISTORS HAVING COMPLEMENTARY SYMMETRY, MEANS FOR APPLYING THE MODULATION SIGNAL TO SAID INPUT MEANS OF SAID FIRST AND SECOND TRANSISTORS IN COMMON WHEREBY THE SAME SIGNAL IS APPLIED TO EACH OF SAID INPUT MEANS, FIRST POTENTIAL STORAGE MEANS CONNETED BETWEEN SAID OUTPUT MEANS OF SAID FIRST TRANSISTOR AND A FIRST REFERENCE POTENTIAL, SECOND POTENTIAL SOTRAGE MEANS CONNECTED BETWEEN SAID OUTPUT MEANS OF SAID SECOND TRANSISTOR AND A SECOND REFERENCE POTENTIAL, SAID FIRST AND SECOND POTENTIAL STORAGE MEANS STORING THE PEAK POTENTIAL APPLIED THERETO FROM SAID FIRST AND SECOND TRANSISTOR OUTPUT MEANS, AND METER MEANS CONNECTED TO SAID FIRST AND SECOND POTENTIAL STORAGE MEANS TO MEASURE AND INDICATE THE VALUE OF THE PEAK POTENTIALS APPLIED TO SAID FIRST AND SECOND POTENTIAL STORAGE MEANS.