MEASURING SYSTEM EMPLOYING A SENSING LOOP AND A REFERENCE LOOP IN BUCKING RELATIONSHIP TO PROVIDE CURRENT-TO-VOLTAGE CONVERSION

摘要

This invention is a current-to-voltage conversion system. The use of the conversion system is in measuring AC or DC signals and in sound reproduction systems. The DC conversion system comprises a reference loop and a sensing loop connected in current bucking relation. A transistorized "zero junction circuit" senses the current differential between the two loops and generates an output voltage that is related to the current differential. The DC conversion system is used to sense current changes for a measuring instrument. the AC conversion system is used to sense output current flow in an audio reproduction system and to provide a feedback voltage directly related to the current flow, for example.