What is the method of measuring DC resistance?
The main characteristic of this resistance is that the resistance is very small, so it is not possible to measure the resistance of the meter with a multimeter.Measuring DC resistance can be measured by electric bridge method, micro ohm meter method, DC voltmeter ammeter method or other methods.
Either way, the basic principle is the ohm theorem, which is to measure the voltage across the resistor through a known current (or real-time measurement), the resistance divided by the voltage, and the resistance.As for which method is good, mainly depends on whether the current size is appropriate, on the one hand to produce a higher voltage, on the other hand, will not allow resistance heating or motor rotation.
The so-called DC resistance, generally refers to the AC impedance of the DC resistance, such as the motor coil DC resistance, transformer winding DC resistance and so on.
