feedback loop

English Thesaurus

1. a circuit that feeds back some of the output to the input of a system (noun.artifact)

hypernym	:	circuit, electric circuit, electrical circuit,
definition	:	an electrical device that provides a path for electrical current to flow (noun.artifact)

hyponym	:	control circuit, negative feedback circuit,
definition	:	a feedback circuit that subtracts from the input (noun.artifact)