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A carrier assembly is automatically connected to a frame ground to prevent electrical magnetic compatibility problems when the carrier assembly is connected to a header assembly.
English (United States)
This text was extracted from a PDF file.
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Ground Screw Device
A carrier assembly is automatically connected to a frame ground to prevent
electrical magnetic compatibility problems when the carrier assembly is
connected to a header assembly.
A grounding pin 1, which is pressed into a head assembly 2, is soldered to a
printed circuit board 3 to provide an electrical connection between the pin 1 and
the printed circuit board 3. When a mounting screw 4 attaches a carrier assembly
5 to the header assembly 2, the mounting screw 4 mechanically interferes with
the grounding pin 1. The grounding pin 1 is formed of a spring metal that
enables it to deflect, as shown in Fig. 2, within an enlarged passage 6 in the
header assembly 2 when the mounting screw 4 mechanically interferes with the
grounding pin 1. Whenever the mounting screw 4 is withdrawn, the grounding
pin 1 returns to its initial straight position.
The printed circuit board 3 has a carrier cable 7 electrically connected thereto
by soldering portions of one end of the carrier cable 7 to the printed circuit board 3. The carrier cable 7 has its other end electrically connected to a ground circuit
in a logic board. Accordingly, the carrier assembly 5 (Fig. 1) is connected to a
frame ground whenever the mounting screw 4 interferes with the grounding pin 1
so that there is automatic grounding when the carrier assembly 5 is mounted on
the header assembly 2 by the mounting screw 4.