A paper shredder control circuit

Abstract

The invention discloses a control circuit for a paper shredder. The control circuit for the paper shredder comprises a paper feed detection circuit, a paper shredding delay control circuit, a starting delay control circuit, a feedback control circuit, a triggering control circuit, a switching circuit, a power circuit and a motor, wherein the paper feed detection circuit is used for detecting whether paper is placed into a paper shredding opening of the paper shredder or not; the paper shredding delay control circuit and the starting delay control circuit are used for controlling the stopping work delay time and the starting work delay time by changing the resistance value and the capacitance; the feedback control circuit is used for providing positive feedback for the starting delay control circuit; the triggering control circuit is used for controlling on-off of the switching circuit; the switching circuit is used for controlling the motor to operate or stop; the power circuit is used for supplying power to the other circuits of the paper shredder; and the motor is used for driving the paper shredder. According to the control circuit for the paper shredder, the paper shredding delay control circuit and the starting delay control circuit are arranged, the paper shredder can still work for a period of time after the tail of paper leaves the paper shredding opening, or the paper shredder can be stopped and then operate again under the condition that the tail of the paper is not completely shredded after paper-jam stopping caused by too much paper, and thus the paper can be completely shredded.

Description

technical field [0001] The invention relates to a paper shredder control circuit. Background technique [0002] A paper shredder is a machine used to shred and destroy paper. It generally consists of a set of rotating blades, a paper comb and a drive motor. The paper is fed from the middle of the interlocking blades and is divided into many small pieces of paper to achieve Purposes of Confidentiality. With the enhancement of confidentiality awareness, the application of paper shredders has become more and more common, and paper shredders with various functions have also been developed. Smart (programmable) shredders are powerful and reliable, but expensive. Non-intelligent (pure circuit, no program) paper shredders are reasonably priced, but their functions are limited. For example, they will stop working if the paper cannot be detected at the paper inlet, causing the tail of the paper to be shredded and unclean. The popularity of low-priced paper shredders. Contents of...

AI Technical Summary

Problems solved by technology

Smart (programmable) shredders are powerful and stable, but expensive

Non-intelligent (pure circuit, no program) paper shredders are reasonably priced, but their functions are limited. For example, they will stop working if the paper cannot be detected at the paper inlet, causing the tail of the paper to be shredded and unclean. The popularity of low-priced paper shredders

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