0
A capacitor works like a kind of rechargeable battery.
They have many uses in circuitry boards.
They can be used in order to filter out certain frequencies ranging from sub-audible to frequencies up in the high THz range.
They can be used to provide a lot of electrical power very fast. This is the use in a typical Audio Power Amplifier.
They can be used as frequency generators in combination with other components.
Although this latest use is not very accurate due to quite a lot of temperature drift in the value, many circuitry boards are not dependent on a very stable oscillating frequency.
There are so many uses of capacitors that it is difficult to describe them with one single sentence.
Their key feature however is their ability to recharge and discharge very rapidly.
Big capacitors are mainly used for instant access to a lot of power.
Small capacitors are mainly used as a kind of analogous form of holding some kind of information.
Where as they all work like a kind of battery, they do not have the very limited charge/recharge lifespan that batteries do. They can be charged and discharged millions of times with hardly any noticeable effect to their capacity.
The difference however is that most of them can not be used like a battery because they often discharge "quickly" over time. If you charge one capacitor, the charge will be gone in a matter of hours or days. (This do depend on the type of capacitor though.) The charge they hold, although rapid available power, it is not by far as much as a standard battery can hold.
Where as a capacitor can discharge 1 ampere in a fraction of a second, a normal AAA cell battery need much much longer time for safely discharge such a load.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
What are common names for some primary discrete components used on circuit boards?
Resistors, capacitors, diodes
Is capacitor a part of integrated circuit?
A small capacitor can be part of an integrated circuit.
What happens to the current in a circuit as a capacitor charges?
What happens to the current in a circuit as a capacitor charges depends on the circuit. As a capacitor charges, the voltage drop across it increases. In a typical circuit with a constant voltage source and a resistor charging the capacitor, then the current in the circuit will decrease logarithmically over time as the capacitor charges, with the end result that the current is zero, and the voltage across the capacitor is the same as the voltage source.
What is going to wrong if you use adhesive around capacitor?
I don't see anything wrong with that. In industry capacitors are often glued onto circuit boards to hold them better.
Effect of shorting out the capacitor in a clamping circuit?
Any circuit using a capacitor will not work if the cap is short-circuited.
What country can you get circuit board?
Taiwan has good quality circuit boards. So, you can get circuit boards from there.SHARAN
How one can know that what kind of capacitor to use in circuit?
paper capacitor
What to expect if a resistor is placed in a dc circuit with a capacitor?
when we replace the resistor with a capacitor ,the current will flow until the capacitor charge when capacitor will fully charged there is no current through the circuit because now capacitor will act like an open circuit. for more info plz E-mailt me at "zaib.zafar@yahoo.com"
Can a capacitor limit current in a circuit?
No.
What does a capacitor do in an amplifier circuit?
not sure
A W pf capacitor is connected into a 240 V Hz circuit. what is the current flow in this circuit?
a 30 pf capacitor is connected into a 240v, 60 hz circuit. what is the current flow into the circuit
Can you use a 25K capacitor instead of a 2.2K capacitor?
In general, no. You need to use the correct capacitor as designed for the circuit.
