A resistance soldering device configured for use with an electrical terminal having a first surface and a second surface opposite the first surface on which a layer of a solder composition is disposed includes an electrode having a first electrical conductor configured to be connected to a positive pole of an electrical power supply, a second electrical conductor configured to be connected to a negative pole of the electrical power supply and an electrically resistive bridge interconnecting the first and second electrical conductors. A method of using such a device is also presented herein.

A resistance soldering system includes a power input receiving an alternating current from a power source and a controller circuit generating a control signal indicative of a desired power level delivered for a desired time. The resistance soldering system further includes a silicon-controlled rectifier connected to the power input and the controller circuit and producing a control voltage proportional to the control signal and a transformer having a primary side receiving the control voltage and a secondary side having output leads configured to apply an output voltage to a solder joint disposed between the output leads. The controller circuit determines the control signal applied to the silicon-controlled rectifier required to melt the solder joint based on the desired power level and the desired time. The controller circuit controls the desired power level independent of the desired time. A method of operating a resistance soldering system is also presented.

A power delivery system includes a power-input-channel, an AC/DC converter, one or more controller-circuits, a silicon-controlled-rectifier, a transformer, and a pair of output-leads. The power-input-channel receives alternating-current from a power-source. The AC/DC converter converts the alternating-current to a direct-current at a converter-output. The one or more controller-circuits are connected with the converter-output and control a signal indicative of a desired-power-level delivered for a desired-time. The silicon-controlled-rectifier is connected with the power-input-channel and controls an SCR-output-voltage to an SCR-output-channel proportional to the signal. The transformer reduces the SCR-output-voltage from a primary-side to a secondary-voltage on a secondary-side. The pair of output-leads are connected with poles of the secondary-side. A solder-joint is disposed between the pair of output-leads. The one or more controller-circuits determine the signal applied to the silicon-controlled-rectifier required to melt the solder-joint based on the desired-power-level and the desired-time, thereby melting the solder-joint disposed between the pair of output-leads.

A smart soldering iron tip of a handheld soldering iron comprises a hollow cylindrical base; a pointed distal end; and a proximal end with an ID feedback device, which when read provides authentication information on the smart soldering iron tip.

A smart soldering iron tip of a handheld soldering iron comprises a hollow cylindrical base; a pointed distal end; and a proximal end with an ID feedback device, which when read provides authentication information on the smart soldering iron tip.

A power delivery system includes a power-input-channel, an AC/DC converter, one or more controller-circuits, a silicon-controlled-rectifier, a transformer, and a pair of output-leads. The power-input-channel receives alternating-current from a power-source. The AC/DC converter converts the alternating-current to a direct-current at a converter-output. The one or more controller-circuits are connected with the converter-output and control a signal indicative of a desired-power-level delivered for a desired-time. The silicon-controlled-rectifier is connected with the power-input-channel and controls an SCR-output-voltage to an SCR-output-channel proportional to the signal. The transformer reduces the SCR-output-voltage from a primary-side to a secondary-voltage on a secondary-side. The pair of output-leads are connected with poles of the secondary-side. A solder-joint is disposed between the pair of output-leads. The one or more controller-circuits determine the signal applied to the silicon-controlled-rectifier required to melt the solder-joint based on the desired-power-level and the desired-time, thereby melting the solder-joint disposed between the pair of output-leads.

A resistance soldering device configured for using with an electrical terminal having a first surface and a second surface opposite the first surface on which a layer of a solder composition is disposed includes an electrode having a first electrical conductor configured to be connected to a positive pole of an electrical power supply, a second electrical conductor configured to be connected to a negative pole of the electrical power supply and an electrically resistive bridge interconnecting the first and second electrical conductors. A method of using such a device is also presented herein.

A hot press welding head includes a main body having a front side surface and a rear side surface opposite to each other in its transverse direction, and a curved bottom surface between bottom edges of the front side surface and the rear side surface. The bottom edge of the front side surface is lower than the bottom edge of the rear side surface in a height direction of the main body. Multiple positioning slots are formed on the curved bottom surface. The multiple positioning slots are arranged in a row along a longitudinal direction of the main body for simultaneously positioning multiple welded wires. The positioning slot extends along the transverse direction of the main body between the front side surface and the rear side surface.

A method for brazing an electrically conducting connecting piece, for example a cable shoe, of an electrically conducting material to a workpiece of electrically conducting material, by means of a temperature controlled brazing process in which the heat necessary for brazing is generated by striking an electric arc between a carbon electrode, and the electrically conducting connecting piece, where the voltage and current is electronically controlled by control electronics to achieve a temperature development to result in a martensite free brazing, and wherein the DC voltage applied is using the carbon electrode as the negative pole, and using the electrically conducting connecting piece as the positive pole, and 0 wherein the carbon electrode is having a tapering, bevelled, or pointy end at the end facing the electric arc.