Many designs exist for logic-based astable multivibrators, one of the simplest being an RC feedback loop around a single inverting Schmitt trigger inverter (Figure 1).The output charges the capacitor ...

PNAS Plus: The c-MYC oncoprotein, the NAMPT enzyme, the SIRT1-inhibitor DBC1, and the SIRT1 deacetylase form a positive feedback loop. Proceedings of the National Academy of Sciences , 2011; DOI ...

This is, however, an example of a positive feedback loop enhancing a negative outcome. How Negative Feedback Works . Many people believe financial markets can exhibit feedback loop behaviors.

The output of the Hall-effect sensor will not 100% match the sensed current, though. For example, if the sensed current is a sine wave, then the output of the Hall-effect sensor is a sine wave with a ...