Siteadmin, Check users, oversight, Administrators
350,908
edits
Changes
Jump to navigation
Jump to search
Line 5:
Line 5: − + +
→Positive feedback
Feedback causes the output to depend not only on the current values of the inputs but on what they were in the past, because one input is actually the prior output. This is why an electrical [[circuit]] with feedback is called a sequential electric circuit. One main element of sequential electric circuits is the [[flip flop]].
Feedback causes the output to depend not only on the current values of the inputs but on what they were in the past, because one input is actually the prior output. This is why an electrical [[circuit]] with feedback is called a sequential electric circuit. One main element of sequential electric circuits is the [[flip flop]].
==Positive feedback==
== Positive feedback loops ==
In general, feedback is positive when the reaction of the system goes in the same direction as the initial signal. The most likely best-known example for this is [[audio feedback]]. An example of a non-technical feedback loop is the spreading of a rumor in the mass media: One person makes a plausible claim and other sources repost it, causing yet more sources to post it.
In general, feedback is positive when the reaction of the system goes in the same direction as the initial signal. The most likely best-known example for this is [[audio feedback]]. An example of a non-technical feedback loop is the spreading of a rumor in the mass media: One person makes a plausible claim and other sources repost it, causing yet more sources to post it.