Operation inspection items for manual soldering with electric soldering iron
(1) Check whether there is fever
Plug the soldering iron into the specified socket 3-5 minutes before going to work every day. Check whether the soldering iron is hot. If it is not hot, first check whether the socket is plugged in properly. If it is plugged in, if it is not hot yet, report to the administrator immediately. Do not disassemble the soldering iron at will, let alone touch the soldering iron head directly with your hands.
(2) Update the soldering tip in time
Soldering tips that are oxidized, bumpy or have hooks should be replaced:
1. Ensure good heat conduction effect;
2. Ensure the quality of the objects to be welded.
If a new soldering iron tip is replaced, the maintenance paint should be wiped off after being heated, and tin maintenance should be added immediately.
The soldering iron needs to be cleaned before soldering. When the soldering iron is not used for more than 5 minutes, the power needs to be turned off.
(3) Check whether the desoldering sponge has water and is clean
If there is no water, please add an appropriate amount of water (appropriate amount means water seeps out when the sponge is pressed to half its normal thickness.
Operation method: After the humidity requirement is that the sponge is completely wet, hold it in the palm of your hand and close your fingers naturally.
When using an electric soldering iron for manual soldering, the sponge used must be clean. Dirty sponges containing metal particles or sulfur-containing sponges will damage the soldering iron tip.
(4) Whether the human body and the soldering iron are reliably grounded, and whether the human body wears an electrostatic ring.
Can diodes be connected in series with a 48V DC soldering iron?
A 48V DC soldering iron cannot connect diodes in series. A small resistor should be connected in series to divide the voltage. Diodes are used in rectifiers and do not have much voltage dividing effect. Resistors are electronic components specially used for voltage dividing. First, use a multimeter to measure the resistance value of the soldering iron. Then connect a resistor of equal value in series according to this resistance value. Then the voltage distributed to the soldering iron will be reduced to 1/2 of the original value. If the temperature of the soldering iron is too low, it will not be enough. , you can remove this resistor and reconnect in series a resistor with a resistance value of 1/2 of this resistor, so that the voltage distributed to the soldering iron is 2/3 of the original. Through repeated experiments, you can find your optimal series resistance value.
The voltage of the forward diode in a 48-volt DC appliance will be reduced by about 0.7 volts, and the reverse series connection will turn off the power supply. Note that the voltage of the diode in series should be >65 volts, and the forward current should be >2 times the operating current.
