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
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