1.Inductor Introduction. Inductor (inductor coil) is a kind of electromagnetic induction element, which is made of insulated wire (such as enamelled wire, yarn wrapped wire, etc.). It is a kind of energy storage device in magnetic field, a…

First, the characteristics of detecting DC current with an pointer multimeter. When the DC current is detected by using the pointer multimeter, the voltage of the multimeter will reduce the equivalent voltage of the circuit because the two…

For the limited measuring precision of the pointer multimeter, the detection error is related to the parameters, detection methods and operating conditions of the pointer multimeter, especially the parameters, sensitivity and voltage of th…