Page 193 - Electromechanical Devices and Components Illustrated Sourcebook
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Chapter 9 Connectors 155
Cooling Fins
Chisel Tip
Wooden Handle
AC Cord
500-watt Element
120 VAC
Figure 9-21 Heavy Duty Soldering Iron
range soldering gun. These units are very handy tools. They broad chisel point. These irons can produce solder joints on
have the attribute of heating up only when the trigger is very large cable. They can also be used to solder buss bars and
pushed, which makes them very friendly. They usually have brass blocks for high-current applications.
an integral light so the work area is properly illuminated For the largest applications, resistive soldering machines are
whenever the iron is in use. The bottom illustration shows a specified. These machines are available in sizes as high as 2500
more traditional 125-watt soldering iron. A unit like this can watts. The work piece is clamped between the electrodes of the
provide a powerful heat source and produce very rapid solder hand piece and low voltage, high current is flowed through the
joints. item to be soldered. As the work piece heats up, solder is
Soldering irons are also available with very large heating applied directly to the joint. Resistive soldering machines are
elements. Figure 9-21 shows a 500-watt soldering iron with a generally used for the largest cables and buss bars. Figure 9-22
shows a commercial resistive soldering machine.
Electrodes
Hand Piece
High Temperature Cables
POWER COMMON LO HIGH ON
OFF
Transformer Housing
AC Cord
120 VAC
Foot Switch
Figure 9-22 Resistive Soldering Machine