Loop antennas consist of a loop (or coil) of wire. The sensor consists of an induction loop or detector coil. The cycle then repeats in a negative feedback loop. Coupling was by a simple loop and pin arrangement. The pipe forms with the jet a feedback loop. This is an example of a negative feedback loop. This is an example of a positive feedback loop. This is an instance of a positive feedback loop. This is done through the second loop. This provides a good example of a negative feedback loop. It consists of a downward half loop and upward half loop. The pendant is suspended from a rectangular shaped metal loop with rounded corners. A tolled extension of State Highway Loop 1 was also created. Consider a robotic arm that can be moved and positioned by a control loop. There are several methods for tuning a PID loop.