A phase-locked loop is an example of a control system using negative feedback.

Of course, you always use feedback to notice if the person is responding or not.

Balance and coordination training using visual feedback can also be incorporated into activities of daily living.

Additionally, less hopeful students don't use feedback from failures to make changes in the future.

Rather students use feedback as evidence of their progress in educational portfolios.

The products were designed using feedback from his salon clients".

Also, are we actually going to see you use feedback from this survey?

We only use feedback when this is the most cost-effective way to achieve our goal.

In this case, we use feedback from delivered software products.

Figure 3 shows a mirror using negative feedback to increase output resistance.