How to measure the current of a charger with a multimeter
Charger current direction is out of the positive into the negative, general output line within the red line for most of the positive pole. Measurement of the multimeter stop in the DC block, the negative line of the charger string of a high-power resistor, the multimeter red pen connected to the red line, the black pen connected to the other end of the resistor can be measured. Note that if the multimeter displays 1, it means that the range is small, and should be adjusted to a higher gear!
Measurement of current, I preferred clamp multimeter. This multimeter, you can play the multimeter to the current gear, the line card to the ring ring can be. But note that the line stuck into the line, must be a single line. If it is a single-phase power, the card to go is the fire wire L or zero wire N one of the two can not be stuck to the ring at the same time. Charger L and N are glued together wire, to measure the current, you must first separate the wires. In order not to damage the original rubber, you can be at the plug, connect two wires, and then connect a plug at the other end of the line, you can.
Other ordinary multimeter measurement, the charger plug on the line and zero time plug still need to be connected, just cut one of the firewire or zero line, cut the ends were connected to the red and black pens on top of the two pens, measure the current, the multimeter hit in the current gear, and then powered on to see the readings. This method, is often said, the multimeter to measure the current, it is necessary to string into the circuit. That's it.
"Multimeter charger current measurement" is not rigorous, the charger marked maximum output current, is a parameter on the production design.
If you say "multimeter charging current measurement charger", is in the case of load, the positive or negative wire disconnect a line, and then hit the DC current gear multimeter connected in series to the disconnected line measurement.
Multimeter measurement of DC, wiring principles: let the current flow from the red pen, from the black pen out; measure the current in series, measure the voltage across the connection.
There are two ways to measure the current of the charger with a multimeter, one of which is to measure the AC current of the input, disconnect the two input lines L or zero line N, dial the multimeter gear to the AC current gear from the high-grade bit step by step to avoid low gear burned out of the multimeter until an accurate current is measured. Measure the DC output and stop the same method, only the multimeter gear dial to DC gear. Not only explained clearly?
