Capacitor multi-purpose meter

A multimeter of a capacitor is an electric meter that can measure voltage, current and resistance at the same time. There are a variety of gear positions, when using the two test pens respectively contact the two ends. Ohm zero is required to measure the resistance and a battery is required. Digital multimeters have many ranges, but their basic range accuracy is the highest. Many digital multimeters have an autoranging function that eliminates the need to manually adjust the range, making measurement easy, safe, and fast. There are also many digital multimeters that have over-range capability. When the measured value exceeds the range but the maximum display has not yet reached the maximum display, the range cannot be changed, thus improving the accuracy and resolution. The input resistance of the DMM is too low and the zero current is too high, which will cause measurement error. The key depends on the limit value allowed by the measuring device, that is, the internal resistance of the signal source. When the source impedance is high, the instrument with high input impedance and low zero current should be selected to make the influence negligible.

Digital DMMs are not limited to numbers, but can also display charts, text, and symbols for on-site observation, operation, and management. According to the size of its display device, it can be divided into four categories: small, medium, large and super large. The shorter the response time, the better, but some tables have a longer response time, and the reading will not stabilize until after a while. The speed of measurement should be based on whether it is used in conjunction with system testing. For example, speed is important, and the faster the better. The frequency range is appropriately selected as needed. AC voltage measurement is divided into average conversion, peak conversion and rms conversion. When the waveform distortion is large, the average conversion and peak conversion are inaccurate, and the RMS conversion is not affected by the waveform, making the measurement result more accurate.

This is the introduction of multi-meters for capacitors.