Due to the strong conductivity of metal, alloy resistors generally have lower resistance values such as 1 milliohm, 10 milliohms, 100 milliohms, etc. Therefore, it is often used for sampling current in circuits. Used to feedback the changing current in the circuit to further control or influence the change of the current. The main products used are: battery protection board, power supply, inverter, lamps, motors, etc.

Four main uses of alloys:

1 - partial pressure

When an alloy resistor and other components, such as a lighting circuit, are connected in series, the same current flowing through the alloy resistor and lighting, the alloy resistance and lighting and the corresponding voltage is equal to the total voltage from both ends of the alloy resistor and lighting as a whole. At this point, the alloy resistance acts as part of the stress.

2 - Diversion

When an alloy resistor and another component such as a light bulb are in parallel in a circuit, the voltage across the alloy resistor is the same as the voltage across the bulb, and the sum of the current flowing through the alloy resistor and the current flowing through the bulb is equal to the sum of the current flowing through the alloy resistor and the bulb. The total current of the bulb. At this time, the alloy resistance acts as a shunt

3 - Impedance matching

Impedance matching refers to the process of using some methods to adapt the load impedance and the internal impedance of the excitation source to each other in order to obtain the maximum power output during the signal transmission process. One of the ways is by changing the impedance. In this case, the alloy resistance is a function of impedance matching

4 - Filtering

The alloy resistor and capacitor are connected in series with RC charging and discharging circuit, the connection point B of the switch, the capacitor C without charge, the voltage across both ends is zero, the switch S is placed at a point, then the power supply starts to charge the capacitor through the alloy resistor R , when the capacitor charge at both ends increases to balance the circuit, the power no longer charges the capacitor, after switch S is placed in B, the capacitor begins to discharge, the charge at both ends gradually decreases, and it is reduced to zero and no longer discharges, and then placed in the switch S to start charging. In the infinite cycle of charge and discharge, we call the function of the alloy resistance as the filtering effect