Hi therei need to know when capacitor is used in A.C CIRCUIT

In summary, capacitors are used in AC circuits and their polarity changes 120 times per second. It is recommended to use AC-rated bipolar capacitors to avoid potential hazards and ensure proper functioning in the circuit. Using regular capacitors can result in expensive and hazardous consequences.
  • #1
monus76
3
0
Hi there
i need to know when capacitor is used in A.C CIRCUIT ( not for the D.C CIRCUIT) ,if we have incoming current frequency is 60 Hz ,so does it means that for one second a capacitor charge 60 times and discharge 60 times in a second or
it charges only once and discharge when it is required.

every body is highly appreciated who can reply.
with thanks
 
Engineering news on Phys.org
  • #2


The capacitor voltage changes polarity 120 times a second. Use only ac-rated bipolar capacitors.
 
  • #3


Bob S said:
The capacitor voltage changes polarity 120 times a second. Use only ac-rated bipolar capacitors.

You could use regular capacitors, but only if you want expensive, carcinogenic smoke releasing, and not-so-impressive firecrackers. Also, I don't know if there's a simple and cheap way to keep them from firing all simultaneously.

Plus there's probably going to be plastic or metal shrapnel flying about.
 

1. What is a capacitor and what does it do in an AC circuit?

A capacitor is an electronic component that stores and releases electrical energy. In an AC circuit, it is used to store and release energy in a cyclical manner, helping to regulate voltage and current.

2. How does a capacitor affect the performance of an AC circuit?

A capacitor can improve the power factor and increase efficiency in an AC circuit. It can also help to filter out unwanted frequencies and reduce voltage fluctuations.

3. When is a capacitor necessary in an AC circuit?

A capacitor is necessary in an AC circuit when there is a need to regulate voltage, filter out noise, or improve power factor. It is commonly used in power supplies, motor circuits, and audio equipment.

4. Can a capacitor be used to store energy in an AC circuit?

Yes, a capacitor can store energy in an AC circuit in the form of an electric field. However, it is not as efficient as a battery for long-term energy storage.

5. How do you choose the right capacitor for an AC circuit?

The right capacitor for an AC circuit depends on the application, voltage and current requirements, and frequency of the AC signal. Capacitors are labeled with capacitance (measured in farads), voltage rating, and tolerance, which should be considered when selecting the appropriate capacitor for a circuit.

Similar threads

How does a Capacitor protect against voltage spikes?
    • Electrical Engineering
Replies
28
Views
12K
Understanding Capacitor Behavior for Noise Filtering?
    • Electrical Engineering
Replies
15
Views
3K
Need to use a rectifier.... but where to put it?
    • Electrical Engineering
Replies
7
Views
855
Can I use individual capacitor IR for parallel circuit balancing resistors?
    • Electrical Engineering
Replies
3
Views
1K
Are capacitors the superior alternative to lithium ion batteries?
    • Electrical Engineering
Replies
10
Views
1K
Don't know how to make an ultrasonic sensor circuit....
    • Electrical Engineering
Replies
1
Views
896
Building a Safe and Efficient Induction Heater Circuit: Tips and Tricks
    • Electrical Engineering
Replies
7
Views
2K
Determining Inductance L in an LC Circuit
    • Introductory Physics Homework Help
Replies
5
Views
204
How does circuit complete when using live wire tester?
    • Electrical Engineering
Replies
7
Views
2K
Trying to build a capacitor charging circuit
    • Electrical Engineering
Replies
14
Views
4K

Hot Threads

Recent Insights

Back
Top