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 [...]
Due to the restriction of the ESR and heat dissipation capacity, each type of film capacitor has its specific "rated" ripple current value. Under the same terminal voltage, as the frequency increases, the impedance of the film capacitor decreases, the ripple current flowing increases. When the current flowing through the film capacitor reaches the rated current [...]
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 [...]
What is a three terminal capacitor and what are the advantages? Capacitors are divided into electrolytic capacitors, ceramic capacitors, tantalum capacitors and so on. Ceramic capacitors are widely used in mobile smart products, which are divided into three-terminal capacitors and two-terminal capacitors. People often say that three-terminal capacitors have good high-frequency characteristics. As a hardware engineer, [...]
The display is an input and output device of the computer. I believe that those who are familiar with the computer are not unfamiliar with the display capacitor. Capacitance refers to the ability to hold charges. There are many complex parts in the display, including capacitors. Then the display capacitance is broken. What characteristics? Let's take [...]