Relais Board Using AT2313


This is a peripheral board with 4 relais, rated at 5A/250V each. The board has a ML10 output connector for connection with the AT2313 Project board. It has also 4 LED’s for indication which relais is switched on.


The circuit is simple, it consists of no more then an ML10 connector, a ULN2803A, which contains eight open collector darlington transistors, four of them amplifies the signals that come from the microcontroller. The IC has build in protection diodes, so no external diodes for driving the relais are needed. There are also four LED’s with current limiting resistors to indicate if a relais is energized, each output of the relais goes to a 2-pole screw connector.
Relais Board
For more details, click: Relais Board Using AT2313

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Ibrar Ayyub

Ibrar Ayyub is an experienced technical writer with a Master's degree in computer science from BZU Multan University. He has written for various industries, mainly home automation, and engineering. He has a clear and simple writing style and is skilled in using infographics and diagrams. He is a great researcher and is able to present information in a well-organized and logical manner.

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