e&e soldering ure
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e&e soldering ure
an acceptable tinned wire has
an insulation clearance equal to the diameter of the wire and wire strands covered with solder, but still visible
during soldering, apply the proper amount of solder directly to the
how should you remove excess solder from the soldering iron tip?
wipe the iron on a damp sponge or rag
what angle is used to trim out damaged foil areas of printed circuit doards?
to connect wires or components leads to flat perforated terminals, the wrap must be
how should you test the heat of a soldering iron?
touch the tip to solder, away from your body
when sololdering a brass fiting to copper tubing, how far should the inner cone of the torch flame be kept from the work?
at least one half of an inch
hwo should you remove a component from a printed circuit board?
to clean tinned, lead plated circuit boards use
a medium bristle brush and alcohol
when repairing a damage terminal on a circuit board, the replacement foil should overlap the connecting circuit by at least
oxide film is removed from the surface of metals during the soldering process by
the soldering flux
you should clean the circuit board connection within how long after it has cooled?
which choice best describes a good solder connection
no pits or holes and has a good concave fillet
when making wire connection to turret terminals, wrap the wire around the terminal at least
you can best determine a soldered connections quality by
giving it a thourough visual inspection
what must you do before soldering gold plated integrated circuit leads
remove their gold plating
why do we use thermal shunts in soldering
they protect heat sensitive components
when soldering a module type package to a printed ciruit board, ensure the connection is soldered within
how should you hold a printed circuit board to desolder a component
you must repai a circuit board conductor if it has a nick that extends what part of its width?
how should you shape a soldering irons copper tip?
use a fine file when the tip is cold
prior tgo soldering electronic equipment, ensure the equipment is
disconnected from the power source
how should a clinched lead terminal lay in respect to the printed circuit pad
flat on the pad and in the direction of the printed circuit wiring pattern
how should you clean a plated soldering tip?
with an abrassive cloth while the tip is cold
which type of solder is preferred for printed circuit boards?
you should clean the metal you are soldering to
let the solder adhere properly
what is an acceptable substitute for siler solder flux?
borax an water
what is the heaviest duty solering iron you normally use in soldering a printed circuit board?