How much do you know about soldering iron power
The power of the electric soldering iron used is too large, it is easy to burn the components (generally, when the junction temperature of the diode and triode exceeds 200°C, it will burn out) and the printed wires will fall off the substrate; the power of the soldering iron used is too small, and the soldering tin cannot be fully Melting, the flux cannot volatilize, the solder joints are not smooth and firm, and it is easy to produce false welding. Generally, it is used for welding integrated circuits, printed circuit boards, CMOS circuits, decoration transistors, IC recorders, TV sets, for ordinary circuit experiments, generally 20W is appropriate, and for repairing vacuum tube machines, such as amplifiers and old instruments. , 35W is appropriate, and the external heating type is 45W. The wiring of the welding large transformer and the grounding trunk line on the metal base plate are 50W for the internal heating type and 75W for the external heating type. If you want to weld metal materials, you should use an external heating electric soldering iron above 100W. If conditions permit, amateur radio enthusiasts can be equipped with a 2OW internal heating type, a 35W internal or external heating type, and a 150W external heating type electric soldering iron, so that it can basically meet various welding needs.
