M
Michael Black
Guest
"M. Hamed" (mhs000@gmail.com) writes:
something else coming into contact with it (and why are there any loose
and uninsulated wires that will?) does everything have to be insulated.
Well, high enough voltage you should be careful with.
It almost sounds like you might be talking about wires at the bottom of
a circuit board or perfboard. If that's it, the wires aren't generally
exposed since they are on the underside and presumably facing some surface
of the box it's in. If the box is metal, the trick is to put a sheet of
some insulation between the board and the box, just in case. Commercially,
you see quite thin pieces of plastic or mylar there, any plastic you
can get your hands on would work. Not even needed if the box is plastic.
Other tricks are covering the exposed wires with tubing. You get
flexible plastic tubing of the right size, slip some on the wire, then do the
soldering. Then you can pull the tubing over the exposed connection. Some
times you can even make do with insulation pulled off a bigger diameter
wire, instead of buying the empty tubing.
Sometimes that's not suitable, because the connection is too big so
a large enough diameter tubing won't hold. So you buy some heat shrinkable
tubing, and as with the plastic tubing, slip a short length over the wire
before you solder it. Then bring it over the connection, apply some heat,
and the tubing shrinks. You get a nicely insulated connection.
Michael
Exposed wire in itself is not a bad thing. Only if there's a risk of
something else coming into contact with it (and why are there any loose
and uninsulated wires that will?) does everything have to be insulated.
Well, high enough voltage you should be careful with.
It almost sounds like you might be talking about wires at the bottom of
a circuit board or perfboard. If that's it, the wires aren't generally
exposed since they are on the underside and presumably facing some surface
of the box it's in. If the box is metal, the trick is to put a sheet of
some insulation between the board and the box, just in case. Commercially,
you see quite thin pieces of plastic or mylar there, any plastic you
can get your hands on would work. Not even needed if the box is plastic.
Other tricks are covering the exposed wires with tubing. You get
flexible plastic tubing of the right size, slip some on the wire, then do the
soldering. Then you can pull the tubing over the exposed connection. Some
times you can even make do with insulation pulled off a bigger diameter
wire, instead of buying the empty tubing.
Sometimes that's not suitable, because the connection is too big so
a large enough diameter tubing won't hold. So you buy some heat shrinkable
tubing, and as with the plastic tubing, slip a short length over the wire
before you solder it. Then bring it over the connection, apply some heat,
and the tubing shrinks. You get a nicely insulated connection.
Michael