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Knowledge about farad capacitors

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 [...]

2021-10-15T01:14:47+00:00Categories: FAQ|Tags: |Comments Off on Knowledge about farad capacitors

The role of 47μF100V electrolytic capacitor

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 [...]

2021-09-27T01:48:23+00:00Categories: FAQ|Tags: |Comments Off on The role of 47μF100V electrolytic capacitor

The relationship between the applicable AC voltage and frequency of Film capacitor?

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 [...]

2021-09-17T09:19:45+00:00Categories: FAQ|Tags: |Comments Off on The relationship between the applicable AC voltage and frequency of Film capacitor?

What are the precautions for measure the insulation resistance of capacitors

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 [...]

2021-09-09T02:17:16+00:00Categories: FAQ|Tags: |Comments Off on What are the precautions for measure the insulation resistance of capacitors

What is a three terminal capacitor and what are the advantages?

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, [...]

2021-09-03T02:14:31+00:00Categories: FAQ|Tags: |Comments Off on What is a three terminal capacitor and what are the advantages?