How to use and measure the shunt resistor video

In electronic measurement and circuit design, shuntresistanceIt is a commonly used component mainly used to measure current. It is connected in series with a known resistance in the circuitLow value resistor, using the voltage drop across the resistor to calculate the current. This article will introduce in detail the usage and measurement techniques of shunt resistors, and recommend relevant measurement videos to help readers better understand and apply shunt resistors.

Shunt resistor is also called "shunt", its main function is to convert the current into a voltage signal. According to Ohm's law (V=IR), when the current passes through the shunt resistor, it will produce a voltage drop proportional to the current. By measuring this voltage value, the current size can be calculated. The shunt resistor usually has a small resistance to reduce the impact on the circuit.

When selecting a shunt resistor, consider resistance size, power rating, and accuracy. If the resistance value is too large, the circuit voltage may drop, affecting normal operation; if the resistance value is too small, the voltage signal will not be obvious and difficult to measure. Generally, a resistor with a resistance between 0.1Ω and 1Ω is selected, and the power is calculated based on the maximum current to ensure that the shunt resistor will not be damaged due to overheating.

The shunt resistor should be connected in series in the current path of the circuit. Common installation locations are the negative or positive pole of the power supply. It is recommended to install it on the negative side to avoid measurement errors caused by ground potential differences. Good contact and heat dissipation should be ensured during installation to avoid measurement accuracy being affected by poor contact or temperature rise.

Measuring the voltage drop across a shunt resistor usually uses a digital multimeter or oscilloscope. First make sure both ends of the resistor are wired correctly, then use a multimeter to measure the voltage. Combined with the known resistance value, calculate the current through the formula I=V/R. In addition, the current waveform can be observed using an oscilloscope, which is suitable for dynamic current measurements.

In order to understand the use and measurement of shunt resistors more intuitively, it is recommended to watch the relevant teaching videos. The video content usually covers the wiring method of shunt resistor, voltage measurement techniques and precautions. Help beginners quickly master the application of shunt resistors through practical demonstrations.

When using a shunt resistor, care must be taken to avoid overloading and preventing the resistor from being damaged by heat. At the same time, the internal resistance and wiring method of the measuring instrument will also affect the measurement results. It is recommended to use shielded wires and good grounding to reduce interference signals and improve measurement accuracy.

As an important tool for current measurement, shunt resistor has the advantages of simple structure and convenient measurement. Accurate current measurement can be achieved through reasonable selection of resistance value and installation position, combined with correct measurement methods. Watching relevant measurement videos can help you understand operational details and improve practical skills. Mastering the use and measurement skills of shunt resistors is of great significance to electronic engineers and enthusiasts.