In my diploma, I described the design for a device for automatic testing of a printed circuit board (PCB) that is a part of a torque limiter on a forestry vehicle. I presented various methods for PCB testing and selected the most suitable method for us - “the bed of nails”. I implemented the method, by using a base to which I attached spring contacts and connected them to two programable logic controllers. I created a step sequence program for a programmable logic controller, made appropriate measures for the installation and mechanical protection of the implemented components and finally tested the device. Based on the comparison of the results of testing manual and automatic torque limiter circuits, it can be concluded that the automatic circuit testing device has accelerated and simplified the testing process.
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