Programmable modular direct current electronic load

Abstract

The invention provides a programmable modular direct current electronic load applied to load test, wherein the programmable modular direct current electronic load has the characteristics of sound heat dissipation, convenient operation and higher accuracy. An electronic load system comprises a software portion and a hardware portion, wherein the hardware portion comprises: (1)single-chip microcomputer selection and input and output port distribution, (2)LDC, (3) keyboard input, (4) D / A conversion, (5) voltage current sampling; (6) a negative feedback control circuit, and (7) a power supply circuit, and the software portion comprises (1) a button information program and a liquid crystal display output program, and (2) a voltage current sampling program, an A / D conversion program, and a DA conversion program.

Description

technical field [0001] The present invention relates to an electronic load, in particular to a programmable modular DC electronic load. Background technique [0002] Electronic load is a kind of load designed according to the electronic components absorbing electric energy and consuming it. Its electronic components are generally power MOS transistors (powerMOS), insulated gate bipolar transistors (IGBT) and so on. In traditional applications, resistance is a well-known load that can be used as a carrier for consuming electrical energy. And this traditional load has many disadvantages. With the continuous development of science and technology, electronic loads will gradually replace traditional loads. Electronic loads mainly use power semiconductor devices to replace resistors, making it easier to change and control the load resistance, and the stability will be improved accordingly. It can be said that the emergence of resistive loads overcomes many disadvantages of tradi...

AI Technical Summary

Problems solved by technology

For the load used in the test, the situation at home and abroad is similar. Most of them are using the traditional method of static load. The static load includes our common resistors, resistance boxes, etc., but this traditional method has too many shortcomings, such as poor heat dissipation and poor operation. Convenience, insufficient accuracy, etc., simply can not meet people's expected goals

People are more concerned about the test that the output current should be constant, it has an output interface, and parameters such as resistance can be adjusted at will. At present, many of the above indicators are still difficult to achieve.

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