Contents
What are the lines on a PCB?
These copper lines (known as traces) allow electrical charge to flow through the PCB, providing power to the different components that are situated systematically on the board. The copper traces function in the place of wires, guiding the electricity to the correct destination.
What does B mean on circuit board?
battery
B: battery. BR: bridge rectifier. C: capacitor. CRT:cathode ray tube. D or CR: diode.
What is PCB and how it works?
A printed circuit board, or PCB, is used to mechanically support and electrically connect electronic components using conductive pathways, tracks or signal traces etched from copper sheets laminated onto a non-conductive substrate. The IPC preferred term for populated boards is CCA, circuit card assembly.
What do the PCB markings on a circuit board mean?
– Electrical Engineering Stack Exchange What do the PCB markings mean? On a printed circuit board, I see lots of tiny letters and numbers. Is there some kind of standard that dictates what letter indicates what type of component?
Where can I find the CERT number on a PCB?
These can be done in silkscreening process, or anti-soldermask processes. You can look up UL cert numbers here: http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm Fill in the UL file number with the ~7 digit number on the PCB to find who actually fabricated it.
What do the numbers mean on a circuit board?
The second number is the function number of the circuit, such as “1” for the motherboard circuit, “2” for the power circuit and so on, which is determined by the circuit designer himself; The third and fourth digits represent the serial Numbers of similar devices on the circuit board. R117: resistance on the main board, serial number 17.
What is the technical term for the markings?
The technical term for the markings is “reference designators” (aka “refdes”) and there are a few standards can define them. Take a look at this wikipedia page for a quick overview. http://en.wikipedia.org/wiki/Electronic_symbol