PCB design and programming of a 4 kV high pot device for the sanitary condom tester project V4.0

Project Details

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In this project, the PCB design and electronic board schematics of the 4 kV high pot devices were created. The programming of this PCB was also carried out in the C/C++ language in the Keil µVision software programming environment. In condom manufacturing factories, it is necessary to test condoms for the absence of holes after initial production. This test is carried out with an electronic testing device or ET. The basis of this device is to create a high-voltage circuit. If the condom has a hole, a short circuit occurs in the circuit and the device rejects the condom.

This 4 kV high pot device was designed and built for the research and development phase of the project to develop and manufacture sanitary condom testers.

This high-voltage device is able to detect holes on condoms in three areas areas:

1-Holes in the first area (the hole is in the upper third of the condom)

2-Holes in the second area (the hole is in the middle third of the condom)

3-Holes in the third area (the hole is in the bottom third of the condom)

In this version of the high voltage system design, it was decided to build a separate high voltage system for each area on the mandrel. Since we perform high voltage tests in two stages in the ET device and three areas with different voltages are tested in each stage, 6 high pot packages were produced in this project.

In the figures below, various parts of the schematic and PCB related to this project are shown.

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The central processor of the control unit in this High Pot system is the AVR-ATmega8A.

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It should be noted that auto-ignition coils are used as the source of spark generation in this high-voltage system and this circuit board is used as an ignition coil driver.

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