Constant current source square wave power supply circuit with adjustable duty ratio and frequency

By designing a constant current source square wave power supply circuit including multiple control units and output units, the problems of high cost and high power consumption when adjusting duty cycle and frequency in the existing technology of constant current source square wave circuit are solved, and a low-cost and low-power circuit design is realized, and the circuit performance is improved.

CN119727377APending Publication Date: 2025-03-28QINGDAO NOVELBEAM TECH
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Patent Information

Application Number
CN202411745423.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing constant current source square wave circuits have high cost and high power consumption when adjusting duty cycle and frequency, making it difficult to meet the requirements of circuit design for precise control and performance improvement.

Method used

A constant current source square wave power supply circuit with adjustable duty cycle and frequency is designed. Through the combination of power input unit, high level control unit, low level control unit, square wave output unit, constant current source generation unit, current magnitude adjustment unit and constant current source square wave output unit, the functional complexity and flexibility of the circuit are achieved by using common electronic components.

Benefits of technology

It realizes a constant current source square wave power supply circuit with low cost and low power consumption and adjustable frequency, which simplifies circuit board design and development, and improves the stability and response speed of the circuit system by accurately adjusting the signal frequency and duty cycle.

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Abstract

The invention discloses a constant current source square wave power supply circuit with adjustable duty ratio and frequency, and belongs to the technical field of circuit power supply control. Specifically, a power supply input unit is used as an input source of power supply of a power supply, a high level control unit and a low level control unit respectively control generation of high and low levels and setting of duty ratio and frequency, and square wave signals are output through a square wave output unit after the high and low levels are generated. A square wave signal reaches the constant current source generating unit and then generates a constant current source square wave signal, the current size adjusting unit is responsible for adjusting the size of the current of the constant current source, and finally, a constant current source square wave power supply signal which is set by the previous units and is adjustable in duty ratio and frequency is output to a rear-end load through the constant current source square wave output unit. According to the constant current source square wave power supply circuit, common electronic components are designed and used for building the circuit, and the constant current source square wave power supply circuit which is complex in function and adjustable in duty ratio and frequency is achieved.
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