Printed Circuit Boards Flashcards
What is the most commonly used conducting material on a printed circuit board?
Copper
What is the base material of a printed circuit board?
Resin impregnated paper
What damage can be done to a microprocessor?
Static-electricity if mishandled
How is surface resistance testing completed in a printed circuit board?
Insulation resistance carried out between the adjacent printed conductor
What are the pads for on PCB’s?
Mounting components
What is a multi-layer PCB?
Two or more layers on one or both sides
What are PCB’s made of?
Fibreglass board coated with copper in which circuits are etched.
What is the base material of a PCB?
An insulated.
- resin impregnated paper
How is a PCB protected after manufacture?
By a conformal coating
- the coating prevents corrosion and leakage currents or shorting due to condensation.
What is a standard feature of a breadboard circuit?
Both earth and power rail would be double width
What are of a PCB is termed ‘Lands’?
The points at which the components are mounted
When should you cut copper tracks on a strip board?
Before mounting the component
What needs to be remembered when removing a microprocessor?
Static discharge can cause considerable damage
