Power supply circuit with current detection function for classroom blackboard LED strip

Abstract

The invention discloses a power supply circuit with a current detection function for a classroom blackboard LED strip. The power supply circuit comprises a mobile power supply, an inductor energy storage module, a current detection module, a microprocessor, a switch module, a clock circuit, and a rectification and filtering circuit. The mobile power supply is connected with the inductor energy storage module, the current detection module, the microprocessor and the clock circuit. The current detection module is connected with the inductor energy storage module. The microprocessor is connectedwith the current detection module. The switch module is connected with the microprocessor. The clock circuit is connected with the microprocessor. The rectification and filtering circuit is connectedwith the inductor energy storage module and the switch module. The current detection module comprises an operational amplifier, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, and a second capacitor. The power supply circuit with a current detection function for a classroom blackboard LED light strip is simple in circuit structure, low in cost, and highin safety and reliability.

Description

technical field [0001] The invention relates to the field of education, in particular to a power supply circuit for a classroom blackboard LED light strip with current detection. Background technique [0002] Classroom blackboard LED light strip is a lamp professionally used in classroom blackboard lighting. It is positioned in ordinary classrooms, music classrooms, natural classrooms, science and technology classrooms, psychological consultation rooms, offices, meeting rooms, art rooms, laboratories and other environments, and can replace the original lighting places using fluorescent tubes. The use of environmentally friendly high-tech LED light source and special optical design makes the lamp an integrated lamp with anti-glare, high energy saving, corrosion resistance and beautiful curve shape. The classroom blackboard LED light strips all need a power supply circuit to work normally. The traditional classroom blackboard LED light strips with current detection have a com...

AI Technical Summary

Problems solved by technology

Classroom blackboard LED light strips require a power supply circuit to work properly. Traditional classroom blackboard LED light strips with current detection have a more complex power supply circuit structure and higher hardware costs.

In addition, the power supply circuit of the traditional classroom blackboard LED light strip with current detection lacks the corresponding circuit protection function, resulting in low circuit safety and reliability.

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