Rotation speed controlling system for shredder motor

Details Rotation speed controlling system for shredder motor Rotation speed controlling system for shredder motor

2011-08-30

2011-08-30

Duda, Rina I (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

C318S772000, C241S225000

Reexamination Certificate

active

08008882

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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