Knowledge

Characterization parameters of electrolytic capacitors-Leakage Current, Rated Voltage, Capacitance Temperature Change Rate. 🔔 Today we will introduce: leakage current (I), rated voltage (U), and capacitance temperature change rate. 🔺1.1.1 Leakage current (I) 📌The leakage current of an electrolytic capacitor is used to characterize its insulation, which is equivalent to the insulation resistance parameter of other types [...]

How to charge a farad capacitors          The voltage-sharing resistor is connected in parallel at both ends of the capacitor, and then connected in series. After one of the capacitors is charged, it is similar to an open circuit, but because the resistor is still connected in the loop, the voltage across the [...]

47μF100V capacitors are generally aluminum electrolytic capacitors. This type of capacitor has poor high frequency performance and unstable capacitance. Electrolytic capacitors with a withstand voltage of 100V are generally large in size. Such capacitors are generally used in circuits. High-voltage filter capacitor or coupling capacitor. Although some ultra-low frequency oscillation circuits or timing circuits use 47μF [...]

Measure the insulation resistance of capacitors,the following points should be noted: (1) A 500 or 1000 volt megohmmeter can be used to measure low-voltage capacitors, and a 2500 volt megohmmeter should be used to measure high-voltage capacitors. (2) The capacitor should be discharged before and after the shaking test to avoid electric shock accidents. (3) When [...]