Soldering Station Failure Analysis
1. The handle is wrong (if it is exactly the same, it can be ruled out)
2. Including the open circuit of the handle sensor (thermocouple or thermal resistance) (the new handle eliminates this problem)
3. The handle line is wrong (new handle can eliminate this problem)
4. Soldering station handle socket problem, poor contact or virtual welding wire
5. Circuit board problem. There are various sensor processing circuits, but the principle is basically the same
(Basically, the op amp (358 or op07, etc.) amplifies the sensor signal to the microcontroller, and then the microcontroller displays the temperature *S_E op amp output will exceed 1.5V*) Some op amps are powered by dual power supplies
(1) The lack of a negative power supply will also cause such a situation
(2) The op amp may be damaged.
(3) The peripheral resistance of the op amp is broken
(4) The reference of the single-chip microcomputer is bad (usually 2.5V and 5V)
When using an electric soldering iron, use a soldering station, what is a soldering station
A soldering station is a hand tool commonly used in electronic soldering processes that melts two workpieces by applying heat to the solder (usually tin wire). Soldering stations are used in a wide range of applications, ranging from common electronic appliance repairs to electronic integrated circuits and chips. Soldering stations are used as welding tools, but they are most commonly used for soldering of PCB circuit boards in electronics factories.
The functions of the soldering station are:
a. Anti-static function: mainly to prevent the precision chip welding from being broken down by static electricity.
b. Sleep function: energy saving, prolonging the life of the soldering iron tip.
c. Digital display temperature: easy to adjust.
d. Password lock temperature: prevent workers from changing the temperature setting at will.
