These are also referred to as “FR4” sheets.
The FR4 sheets are used as the insulating non-conductive material, and copper is used as
a conductive material.
If material is conductive, it conducts electricity; electrical charge can flow through that
material easily.
FR4 and copper are both sandwiched together in thin sheets, and that’s how you get a
circuit board.
Where are PCBs used?
They’re used everywhere!
In your phone, in your laptop, in your refrigerator, air conditioner. Basically, every electronic
device you use has a unique printed circuit board that makes it work.
Did you know?
A PCB is one of the most important inventions of the last 100 years.
Space travel wouldn’t be possible without them.
PCBs were invented by Paul Eisler.
He invented it in the 1930s, but the predecessors of modern-day PCBs have been around
since the age of gramophones and vacuum tube radios, just in a somewhat different form.
