Questions tagged [alignment]

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How to tell flat flexible cable(FFC) alignment when inserting?

I have an MSR with an 8 pin FFC with contacts on one side. I don't know if there is a top and bottom and if so how to tell the orientation. There is writing on the contact side I assume to indicate ...
0
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1answer
453 views

How can I align chips on PCB?

I am searching for a method/device for aligning chips with pins/pads underneath, like QFN, LGA, BGA and others. I've been searching the Internet, but I could find anything except expensive (several k€)...
1
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2answers
58 views

Aligning PCBA on a plastic enclosure

I am trying to align a PCBA very accurately (within +/- 0.5mm positional tolerance) on a plastic enclosure. I'm thinking about using two 2mm diameter dowel pin that is press-fitted into the plastic ...
0
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4answers
167 views

Why does unaligned memory read require extra clock cycles?

I believe I understand how memory reads work with the 8086 processor. The 8086 has a 20-bit address bus and 16-bit data bus (multiplexed). The memory module consists of two memory banks, and the LSB ...
0
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1answer
149 views

How are complicated PCBs designed? [closed]

Firstly, I've always wondered how do engineers calculate the right parameters of components (caps, resistors, inductors, ...) in big projects, such as mobile motherboards and etc. It feels rather ...
9
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3answers
1k views

PCB enclosure tolerances [closed]

I can imagine problems of PCBs not fitting into their enclosures or misaligned screw/hole pairs. Are these type of problems common, especially with the dirt cheap enclosures? I am planning to use one ...
0
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1answer
137 views

Audio amplifier alignment procedure questions

I have a couple of questions related to the alignment procedure for the amplifier of Klipsch SW-12, a powered subwoofer. Its service manual (link below) says the following: (page 3) COMPRESSION ...
6
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1answer
1k views

Centroid of component for pick and place machine using Eagle

Just finished designing a PCB and sent the Gerbers off to my board house (Bittele) and they have requested that I also provide them with a pick and place file. Using Eagle, I ran mountsmd.ulp and ...