The main uses of precision shunt resistors include:

1. Current detection: By passing the circuit current through a precision shunt resistor, the current value in the circuit can be measured. Precision shunt resistors have the advantages of high accuracy and low temperature drift, providing stable and reliable current detection.

2. Voltage detection: In order to protect measuring instruments and other components when high voltage is present in the circuit, precision shunt resistors are commonly used to shunt the circuit and lower the voltage to a safe range, thus achieving voltage detection.

3. Temperature measurement: Precision shunt resistors are commonly used to make thermocouple thermometers. By utilizing the different thermal potentials of different materials, temperature measurement can be achieved. Precision shunt resistors have the advantages of low temperature coefficient and good stability, providing high-precision temperature measurement.

4. Voltage stabilization: By using precision shunt resistors to divide the voltage in the circuit, the output voltage in the circuit can be stabilized, achieving voltage stabilization.

5. Incremental operation: Precision shunt resistors can be used to achieve incremental operation of differential amplifiers. By using precision shunt resistors to balance the current of the two input signals, the signal can be differentially amplified.