M4.2 Cat B

What does PCB stand for?

• Printed Complete Board

• Printed Circuit Board

• Partial Circuit Board

• Populated Circuit Board

What does the dot or notch on this component mean?

• It shows which way to solder the component to the board

• It can only be used for monostable circuits

• It can only be used for astable circuits

• It shows where the first pin is

How many pins does a typical OpAmp Dual Inline Package (DIP) have?

• 4

• 16

• 8

• 10

A monostable circuit is one that will act (pulse) more than once:

• True

• False

An astable circuit is one in which the circuit will pulse repeatedly

• True

• False

The three component legs of a thyristor are what?

• Source, Drain, Gate

• Anode, Cathode, Gate

• Base, Collector, Emitter

The tracks on PCBs are generally made from which material?

• Tin

• Aluminium

• Copper

• Steel

Which step in the process slowly removes the unwanted copper?

• Developer Tank

• UV Light Box

• Etching Tank

When the PCB layout is finished it is printed on to a transparency (clear acetate sheet) and becomes known as a what?

• Overlay

• PCB Mask

• Layout

• Negative

This method of protecting the circuit board uses _______.

• adhesive coating

• bonded coating

• conformal coating

• defender coating