How to use a multimeter for inductance detection
Inductance is a very important component in mobile phone chargers. Almost every charger is indispensable, so we also need to learn a method to detect inductance. We learned about "inductance" when we were in high school. Inductance is equivalent to short circuit to direct current. This can be put to good use in conjunction with the diode block on the multimeter.
We all know that if the diode blocks the red and black test pens directly connected to a multimeter, it will make a sound. If it is not connected, it will not make a sound. The same is true for the inductor. Try it. There is only a diode symbol in the upper right corner of the multimeter's display screen.
How to use the circuit multimeter _ how to use the multimeter to find the problem
Open circuit or no-load display
Next, we connect the multimeter to both sides of the inductor, and then see what changes on the display in the upper right corner of the multimeter display.
How to use the circuit multimeter _ how to use the multimeter to find the problem
short circuit display
Is there another symbol similar to the mobile phone signal? It means that the inductance is normal and there is no open circuit. When this phenomenon occurs, you will still hear the buzzer. At this time, we can confirm that the inductance is normal. .
