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 12.5 kV high-voltage device was designed and built for the research and
development phase of the project to develop and manufacture condom testers.
This high-voltage device is able to detect holes on condoms in three 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.
Below you can see photos of this device in the research and development phase.
The figure below shows the prototype of this high-voltage driver in the research
and development phase.
In this high-voltage system, high-speed optocouplers are used to protect the pulses
caused by the detection of holes in the condom.
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.
The following video shows the performance of the condom testing device with this
high voltage system.
