Vectronics VEC-1500K - Manual (Page 47)

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Lesson 4 Soldering Irons
1. Some soldering irons have "grounded tips" and some do not. The purpose
of grounding is to prevent (A.) electrocution, (B.) fire, (C.) ESD, (D.)
cold solder joints. [ ]
2. A soldering iron with a heating element that runs "full time" is called a
(regulated/unregulated) ____________________________ iron.
3. The transformer in a solder station (boosts/lowers)________________
operating voltage to the soldering iron.
4. The temperature of a solder station equipped with a magnetic-thermostat
switch is controlled by the type of _______________ you install.
5. The amount of thermal energy stored by your iron depends (primarily) on
the tip's _____________________ and ________________________.
6. To increase the thermal storage capacity of an iron, you could:
(A.) increase tip temperature, (B.) increase tip mass, (C.) increase tip
temperature and mass, (D.) all of the above. [ ]
7. To decrease the thermal storage capacity of an unregulated iron, you could:
(A.) install a larger tip, (B.) install a smaller heating element, (C.) install
a fatter tip, (D.) turn up the voltage. [ ]
8. To increase the thermal storage capacity of a continuously adjustable
soldering station, you could turn the temperature control (up/down)
_________________.
9. If solder melts at the point of tip contact, but not over the entire surface area
of the connection, this may indicate your iron has too
(much/little) ____________ thermal storage capacity.
10. If pads begin de-laminating and lifting off the pc board when you apply
heat, your iron tip might be too: (A.) cool, (B.) fat, (C.) hot, (D.) sharp
on the edges. [ ]