Other

Luther & Maelzer Gmbh

Rudiger Dehmel

Martin Maelzer

Erich Luther

Hans-Hermann Higgen

Hans H Higgen

Christian Seyb

An adapter for a printed circuit board testing device, by means of which the test contacts located on the grid can be connected to test points of a printed circuit board to be tested that are located on and/or off grid means of test pins that are received in guide holes in the adapter and each have a pointed contacting section that is directed towards the respective contact point of the printed circuit board and projects from the adapter and an adjacent guidance section that is guided in the associated guide hole of the adapter, is to be designed so that even test pieces in which the test points are relatively close together and/or with large displacements from the grid can be tested. This is done by reducing the cross-section of the guidance section conically or in steps towards the contacting section, and that the cross-section of the guide bores is correspondingly reduced.

Adapter for a printed circuit board testing device

A test pin for an adapter for connecting test contacts of a printed circuit board testing device that are located on a grid with test points of a test-piece such as a printed circuit board located on and/or off the grid, wherein in order to connect associated test contacts and test points the test pin can be inserted into guide holes at different inclinations in the adapter and has a pointed contact section that is directed towards the respective contact point of the circuit board and projects from the adapter and an adjacent guidance section that is guided in the associated guide hole of the adapter, is designed so that test-pieces with their test points only a relatively short distance apart can be tested. This is achieved by reducing the cross-section of the guidance section conically or stepwise towards the contact section.

Test pin for an adapter for connecting test contacts on the grid of a

An adapter (175) for a printed circuit board testing apparatus. The adapter serves to connect testing contacts located in the grid to testing points, located in and/or out of grid, of a printed circuit board to be tested, through adapter pins (181). The adapter pins (181) are conically tapered at their ends facing the testing points. The adapter (175) has a first guide plate (176), a second guide plate (177) and a third guide plate (178) lying in between. The first guide plate (176) only has holes (180) only located in the grid. The second guide plate (177) has holes (179) located in the grid, as well as holes (179a) located out of grid. In order to guarantee that the testing pins (181), with perpendicular introduction into the guide holes (180) of the first guide plate (176), are inevitably always guided into the corresponding guide holes (179, 179a) of the second guide plate (177), the displacement for holes, located out of grid, in the third guide plate (178) is so chosen n that the conical points of the adapter pins (181) in any case still go home into the corresponding guide hole (182a), located out of grid, of the third guide plate (178).

Adapter for a printed circuit board testing apparatus

Apparatus for testing electrical printed circuit boards

A self-programming printed circuit board tester which receives and stores information corresponding to the conductive and insulative relationships between test points or master printed circuit boards and then compares that information to information received from boards to be tested and an adapter for connecting each master printed circuit board to the tester, the adapter having a memory which stores and supplies to the tester information corresponding to information supplied through the adapter to the tester from a perfect master printed circuit board.

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Wunstorf, Germany

Rudiger Dehmel