Ultrastable eddy current nondestructive testing apparatus
阅读：376发布：2024-02-05
专利汇可以提供Ultrastable eddy current nondestructive testing apparatus专利检索，专利查询，专利分析的服务。并且，下面是Ultrastable eddy current nondestructive testing apparatus专利的具体信息内容。
1. AN ULTRASTABLE EDDY CURRENT DEVICE FOR NONDESTRUCTIVELY TESTING A SAMPLE COMPRISING A FIRST PROBE COIL MOUNTED ADJACENT SAID TEST SAMPLE, A REFERENCE TEST SAMPLE, A SECOND LIKE PROBE COIL MOUNTED ADJACENT SAID REFERENCE SAMPLE, A FIRST BRIDGE CIRCUIT, MEANS FOR CONNECTING SAID FIRST AND SECOND PROBE COILS SO THAT EACH FORMS AN ADJACENT ARM OF SAID FIRST BRIDGE CIRCUIT, A SECOND BRIDGE CIRCUIT, SAID FIRST AND SECOND BRIDGE CIRCUITS BEING INITIALLY BALANCED TO GIVE EQUAL AMPLITUDE OUTPUTS THEREFROM, AN OSCILLATOR, MEANS FOR CONNECTING THE OUTPUT OF SAID OSCILLATOR ACROSS THE INPUTS OF SAID FIRST AND SECOND BRIDGE CIRCUITS, AN AMPLIFIER, MEANS FOR ALTERNATELY CONNECTING THE OUTPUTS OF SIAD BRIDGE CIRCUITS TO THE INPUT OF SAID AMPLIFIER, MEANS FOR CONVERTING THE OUTPUT OF SAID AMPLIFIER TO A D-C SIGNAL, FIRST AND SECOND CAPACITORS, MEANS SYNCHRONIZED WITH SAID OUTPUT ALTERNATE CONNECTING MEANS FOR APPLYING THE D-C OUTPUT SIGNAL FROM SAID CONVERTING MEANS DERIVED FROM THE OUTPUT OF SAID FIRST BRIDGE CIRCUIT TO SAID FIRST CAPACITOR TO CAUSE CHARGING THEREOF, MEANS SYNCHRONIZED WITH SAID OUTPUT ALTERNATE CONNECTING MEANS FOR APPLYING THE D-C OUTPUT SIGNAL FROM SAID CONVERTING MEANS DERIVED FROM THE OUTPUT OF SAID SECOND BRIDGE CIRCUIT TO SAID SECOND CAPACITOR TO CAUSE CHARGING THEREOF, AND MEANS FOR DIFFERENTIALLY MEASURING THE CHARGE ON SAID CAPACITORS.
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