Shredder thickness with anti-jitter feature

A shredder comprising:

• a housing having a throat for receiving at least one article to be shredded;
• a shredder mechanism received in the housing and including an electrically powered motor and cutter elements, the shredder mechanism enabling the at least one article to be shredded to be fed into the cutter elements and the motor being operable to drive the cutter elements in a shredding direction so that the cutter elements shred the articles fed therein;
• at least one thickness detector configured to detect a thickness of the at least one article to be shredded being received by the throat;
• and
• a controller coupled to the motor and the at least one thickness detector, the controller being configured
• a) when the at least one article is being received in the throat prior to operation to either (i) operate the motor to drive the cutter elements in the shredding direction to shred the at least one article, if the thickness detector detects the thickness is less than a predetermined maximum thickness threshold, or (b) prevent operation of the motor to drive the cutter elements in the shredding direction, if the thickness detector detects a violation of the predetermined maximum thickness threshold;
• b) to monitor the thickness detector during the operation of the motor;
• and
• c) to perform a predetermined operation if the thickness detector detects during operation of the motor a violation of a flutter threshold, the flutter threshold being higher than the predetermined maximum thickness threshold.