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The arrangement of pins and their functions on a device

2 votes

Why are "ice cube" PCB mount power relays pinned out so that the COM pin is between the coil...

I agree with you, that pinout is horrible. It likely has to do with the way the moving arm is hinged inside the relay. The hinge being on the left side of your image directly above the common pin. …
Trevor_G's user avatar
  • 47k
2 votes
Accepted

Driving a Strange 12-Pin, 7-Segment, 4-Digit LCD display

2049... The trick is one needs to get refreshing per digit out of your head and think about updating the whole display two "rows" at a time instead. The layout of the segments is more dictated by …
Trevor_G's user avatar
  • 47k
16 votes

Pinout for board to board ribbon cable

This is a common issue when interconnecting boards with ribbon cables if you do not think it through properly. There is no real resource for this, other than anecdotal answers like this one. Your prop …
Trevor_G's user avatar
  • 47k
18 votes

Why is an Ethernet cable not grounded?

Grounding is often misunderstood to be the end-all solution for connecting things together. However, in most cases, even on short runs, grounding adds more issues than it solves. The issue with shari …
Trevor_G's user avatar
  • 47k