How to measure resistance with a multimeter and read the resistance value
When repairing electronic circuit boards, the resistive components on the circuit board account for about 50% of the entire electronic components. If the circuit is faulty, the resistive components are one of the components we need to measure.
So how to measure resistance with a multimeter and read the resistance value? Let me tell you about this issue. Before measuring the resistance, we'd better perform two zero-adjustment operations, one is the mechanical zero-adjustment of the pointer multimeter; the second is the ohm zero-adjustment. After completing these two steps, you can select the appropriate resistance multiplier file for resistance measurement. Since the scale of the resistance file of the multimeter is uneven, it is best to keep the pointer scale at the sparse part of the scale when selecting the multiplier file. , and the closer the pointer is to the middle position of the scale, the more accurate it is. I suggest that it is best to keep the pointer pointing at 1/3 to 2/3 of the scale.
Reading method
The method of multimeter reading is not complicated, that is, the reading of the meter head is based on the magnification, that is, the resistance value of the measured resistance. For example, if the resistance value of a resistor is 47 ohms, then adjust the range to the ohm range of "Rx10". At this time, the pointer of the multimeter points to the position of 4.7, and the final reading is 4.7x10, which is 47 ohms. If you measure a large resistance, you can choose a larger resistance range, such as Rx1k or Rx10K, and the methods for reading the resistance value are the same.
