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Over-current protection device of multiple high voltage power elements and method thereof

A technology of a power element and a protection device, which is applied in the field of printing devices, can solve the problems of increasing the manufacturing cost of a multifunctional laser printer or a business machine, and cannot protect the high-voltage power element and its power supply circuit, and achieves the effect of saving the manufacturing cost.

Inactive Publication Date: 2012-03-14
CAL COMP ELECTRONICS +1
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  • Abstract
  • Description
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Problems solved by technology

However, adding sheet metal will increase the manufacturing cost of the multifunctional laser printer or business machine, and it is impossible to immediately protect the high-voltage power components and their power circuits

Method used

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  • Over-current protection device of multiple high voltage power elements and method thereof
  • Over-current protection device of multiple high voltage power elements and method thereof
  • Over-current protection device of multiple high voltage power elements and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] An embodiment of the present invention provides an overcurrent protection device for multiple high-voltage dynamic components, which is used for overcurrent protection of high-voltage dynamic components such as solenoid valves or electronic clutches when a multi-function laser printer or a business machine fails.

[0036] First, please refer to figure 1 , figure 1 It is a schematic diagram of an overcurrent protection device for multiple high-voltage power components provided by an embodiment of the present invention. The overcurrent protection device 1 for multiple high-voltage power components includes a comparison module 14 and a logical operation module 15 . In this embodiment, the high-voltage power components are exemplified by solenoid valves S1-S3, but the multiple high-voltage power component overcurrent protection device 1 of the present invention is not limited to be used for solenoid valves S1-S3. For electronic clutches, the present invention The overcurr...

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Abstract

The invention provides an over-current protection device of multiple high voltage power elements and a method thereof. The device comprises a comparison module and a logical operation module, wherein the comparison module is used for receiving a plurality of voltages produced by a plurality of working currents of a plurality of high voltage power elements and respectively comparing the voltages with at least one reference voltage, so as to produce a plurality of comparison results; the high voltage power elements are a plurality of solenoid valves, a plurality of electronic clutches or combinations of the solenoid valves and the electronic clutches; the logical operation module is used for receiving the comparison results and producing at least one control signal for a driving circuit of the high voltage power elements according to the comparison results; and the high voltage power elements are respectively driven by the driving circuit of the high voltage power elements according to the at least one control signal.

Description

technical field [0001] The invention relates to a printing device, in particular to an overcurrent protection device and method for multiple high-voltage power components, which are used to simultaneously protect multiple high-voltage power components in the printing device. Background technique [0002] Generally, multi-function laser printers or business machines need multiple high-voltage power components to convert power into power for smooth printing. The high-voltage power element may be a solenoid valve (solenoid) or an electronic clutch (clutch). However, when a multi-function laser printer or business machine (MFP) fails or momentarily misoperates (for example, the action of each component stops due to a paper jam), these high-voltage power components and their power circuits may continue to receive high voltage or high voltage. current, and burning occurs first. More seriously, the burning of these high-voltage power components may spread to other components, cau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/08
Inventor 张智鸣陈汝洲
Owner CAL COMP ELECTRONICS
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