A Conversation for The h2g2 Team

Positive Feedback

Post 1

Just zis Guy, you know? † Cyclist [A690572] :: At the 51st centile of ursine intelligence

An anal-retentive engineer writes:

"Positive feedback creates instability - it's like trying to correct a drift to the left by steering further left."

So now you know smiley - smiley


Consider the Schmitt trigger.

Post 2

Sean


A pedant replies:

"Positive feedback doesn't always create instability - saturation's a pretty stable state."

"And without positive feedback applied to comparator circuits, you'd have unstable outputs (multiple transitions) due to noisy input crossing the trigger threshold".


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