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Frequently Asked Questions
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What is a capacitor used for?
A capacitor is used to store and release electrical energy, smooth voltage fluctuations, filter signals, and manage power flow in electronic circuits.
How does a capacitor work?
When a voltage is applied across the capacitor's terminals, an electric field is created between the two plates, causing positive charge to accumulate on one plate and negative charge on the other.
What is capacitance ?
Capacitance is the ability of a capacitor to store electrical charge, measured in farads (F). The larger the capacitance, the more charge a capacitor can store for a given voltage.
How do I test a capacitor?
You can test a capacitor using a multimeter that has a capacitance measurement feature, or by using an ESR meter to measure its equivalent series resistance.
Can capacitors go bad?
Yes, capacitors can degrade over time, especially electrolytic capacitors, which can dry out and lose capacitance. Environmental factors like heat and voltage stress can also accelerate
How long do capacitors last?
Capacitors can last anywhere from several years to decades, depending on the type and usage. Electrolytic capacitors tend to have a shorter lifespan (often 5-10 years) compared to ceramic
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A capacitor is a crucial component in many electronic devices and circuits. Here’s more about its uses.