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Three reasons.
1...There are cases where you can't get there from here...there is no way to get a connection from a point to another point without jumping over another trace, so an insulated wire jumper is used.
2...Someone goofed up and a circuit correction must be made. This is done by cutting traces and adding jumpers. Sometimes ICs are "dead-bugged" (Glued on upside down) onto the circuit card.
3...Sometimes a circuit card must work while interfacing with different external circuits, so jumpers are added or removed to permit different interfaces.
Many times jumpers are supplied as zero ohm resistors (3 black rings) so that they can be installed by a pick-and-place machine.
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∙ 10y ago
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What is the use of a track cutter?
Cuts copper traces of printed circuit boards to allow changes.
What you can do after degree in electronics and telecommunications?
You could go into teaching or you could get a job manufacturing circuits/circuit boards.
Why are circuit boards green?
That is just the conventional color of the insulating varnish "mask" used to protect the board. It could be a different color, but green was selected as it contrasts well with copper traces allowing them to be seen through the "mask". Up until the late 1950's, circuit boards were usually brown in color. The brown boards had no "mask" on them, the traces were protected with solder dip. Brown is the color of the paper-epoxy or paper-phenolic board material used.
What is the lifetime of printed circuit board?
Depends on the material it's constructed from, the application for which it's being used and the atmospherics to which it's exposed. I have printed circuit boards from the very first model of an RCA transistor radio made in 1957 and the circuit board as well as the electronics still work.
What can printed circuit boards be used for?
PCB or printed circuit board are copper clad that are chemically etched to establish connections with parts installed on it making it a working circuit Today, just about every electronic appliance in your home contains a printed circuit board of some type: computers, printers, televisions, stereos, musical instrument amplifiers and synthesizers, digital clocks, microwave ovens, telephone answering machines and even cell phones. The "motherboard" in a computer is the main printed circuit board that is the heart of a computer. Other circuit boards inside a computer performs functions such as RAM (random access memory), power supplies, modems and video "cards."
What country can you get circuit board?
Taiwan has good quality circuit boards. So, you can get circuit boards from there.SHARAN
Where can someone find a printed circuit board design online?
You can find a printed circuit board design online in some blogs or message boards that are interested in designing circuit boards. You can also find some designs on websites that sell kits and circuit boards.
Which are the testing points on motherboard for circuit level troubleshooting?
wire connections for jumpers
Are circuit boards dangerous to be used?
Circuit boards are not dangerous to use and they are not some type of skateboard. There are tons of varieties of circuit boards for different things you are trying to control. You'd need to ask a more specific answer since there are so many types.
Circuit boards that provide more memory or control peripheral devices are called?
Expansion Boards
What percentage of electronic connectors sold in the U.S. were printed circuit boards?
About one-third of electronic connectors sold in the United States are printed circuit boards.
What are most of the components in a PC mounted on?
Circuit boards
What in a computer holds all circuit boards?
It is the motherboard.
What holds all of the circuit boards in the computer?
The motherboard
How many ways can 2 defective circuit boards be selected from 58?
If there are 58 defective circuit boards, two can be selected in 58*57/2 = 1653 ways.
What is a big circuit board that has smaller circuit boards plugged into it?
the answer is the mother board of the computer
Is linear technology outdated?
No. Linear Technology is actually a company that manufactures things like circuit boards for machines and computers. Things like that will always need circuit boards.
