Modified Spot Welder Solders Flat Cables

Abstract

Soldering device, essentially modified spot welder, melts high-melting-temperature solders without damaging plastic insulation on flat electrical cables. Solder preform rests on exposed conductor of cable, under connector pin. Electrodes press pin/preform/conductor sandwich together and supply pulse of current to melt preform, bonding pin to conductor. Anvil acts as support and heat sink. Device used to solder flexible ribbon cables to subminiature pin connectors.