Rotation speed controlling system for shredder motor
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United States of America Patent
Stats
-
Aug 30, 2011
Grant Date -
May 21, 2009
app pub date -
Nov 16, 2007
filing date -
Nov 16, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for controlling the rotation speed of a shredder motor is disclosed. It consists of a bridge rectifier circuit, a forward/reverse controlling switch, a motor speed switch, and AC motor coils. By changing a switch, it is possible to activate the following four modes: forward fast, reverse fast, forward slow, and reverse slow. A user can thus operate a shredder at high torque and low rotation speed or high rotation speed and low torque depending on the number of sheets to be shredded.
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