. Stands for Printed Circuit Board.
. It is a thin board made of fibre glass, composite epoxy and other laminate materials.
. Conductive paths are printed onto board which connects transistors, resistors and IC's.
. It is a thin board made of fibre glass, composite epoxy and other laminate materials.
. Conductive paths are printed onto board which connects transistors, resistors and IC's.
Before PCB's:
. Circuits were constructed through wiring and point-to-point connections.
. It led to many failures at wire junctions.
. Short circuits occurs when wire insulation began to age and crack.
Applications of PCB's:
. Used in desktops, laptops.
. Video cards, RAM, motherboard made of PCB's.
. Also found in TV, radio, digital cameras, cellphones.
Advantages:
. Compact size.
. Components are fixed, they do not move.
. Tight connections, short circuits are avoided.
. Low radiation, low cross talk between components.
. Layouts once designed can produce mass number of same type.
Disadvantages:
. Increased design time.
. Development cost.
. Difficult to modify once board is fabricated.
. Sensitive to handle.
. Not easy to repair once damaged.