A program-controlled load adaptive variable voltage constant current source module

A constant current source module, self-adaptive technology, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve problems such as output current exceeding the limit current, load or instrument damage, etc.
CN109634345BInactive Publication Date: 2020-10-20长春昌鼎电子科技有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
长春昌鼎电子科技有限责任公司
Publication Date
2020-10-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a program control type load adaptive variable voltage constant current source module, and belongs to the technical field of electronic equipment. The module comprises main structures including a single-chip microcomputer (1), a digital-to-analog conversion module (2), a power output module (3), a load judgment module (4), a delay compensation module (5), a voltage trackingmodule (6), a power-off protection module (8), a program control module (9), and the like. The module can actively adapt to the change of a load during working, and has the advantages of high efficiency, wide load adaptation range, high safety, high reliability and the like.
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Description

technical field

[0001] The invention belongs to the technical field of electronic equipment. It particularly relates to a program-controlled load adaptive variable voltage constant current source module. Background technique

[0002] Constant current sources have important applications in many fields such as LED drive, laser drive, sensor drive, and various glow discharge light source drives. The basic principle of the constant current source circuit is generally to use the nonlinear characteristics of the triode or FET and the deep negative feedback technology to make the output current controlled by the control voltage, and keep the current flowing through the load constant when the load changes. In the constant current source circuit, the stability of the current and the efficiency of the circuit are two crucial parameters.

[0003] The existing technology closest to the present invention is the Chinese patent "A double-loop feedback constant current source circuit" (ap...

Claims

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