Most homeostatic mechanisms involve Negative Feedback , i.e. a corrective mechanism involving an action that directly opposes a variation from normal limits.
Here the stimulus produces a response that depresses the stimulus i.e. the stimulus and response are opposite to each other. Ex-
Secretion of thyroxine
Maintenance of water balance by osmoreceptors &ADH
Arterial pressure regulating mechanism by baroreceptors.
Regulation of majority of the hormone release