The working principle of high efficiency multi-function soldering iron
The working principle of high efficiency multi-function soldering iron
The control circuit of this soldering iron is shown in the figure above. The IC (CS929) in the figure is an integrated circuit block developed specifically for this soldering iron, which contains circuits for power control t signal detection. The name of each pin of this IC block is also given in the figure. AC 220V power supply through the lC ④ foot input to the IC internal power control circuit, and then through the ⑤ foot and external potentiometer W sent to the soldering iron, change the W resistance value can change the size of the output power.
IC's ⑦ foot for the detection signal input, when the DC power supply is turned on 3V switch K, the detection signal input by the ⑦ foot through the internal circuit.
Foot input detection signal amplified by the internal circuit, and then by ②, ⑧ feet output, according to the output signal whether to promote the light-emitting diode light, you can make a judgment on the circuit capacitance, resistance, diode, transistor good or bad, as well as the circuit line of the on and off and so on.
Advantages of efficient multi-function soldering iron
1, with adjustable power, one can replace the commercially available 20W, 30W, 50W three soldering iron.
2, can be different with the size of the soldering pieces and different ambient temperatures at any time to change the size of the power to prevent overheating of the soldering iron head, reduce the generation of oxidized layer, thereby increasing the soldering iron head to eat tin capacity, improve the quality of soldering pieces and welding speed, but also play a role in power saving and life extension.
3, the actual welding operation often involves pre-detection of the wire on and off, the component's good or bad, the presence or absence of AC power and so on. For this reason, there is not yet a testing function of the soldering iron, the iron has a variety of test functions, is the detection and welding integration of electrician tools.
