Dingfeng Capacitor----What does a Capacitor do
Issue Time:2016-10-13

                Dingfeng Capacitor----What Does a Capacitor do?

A capacitor is commonly used for filtering. But what is filtering?

Let’s look at an example with a battery.Many alarm clocks are powered by the electrical outlet on the wall in a house. Sometimes, the power goes down. Most alarm clocks have a backup battery that will take over and power the alarm clock until the power comes back on so that the time is not reset.Well, in electronic circuits capacitors can be used in the same way.

Decoupling Capacitors


For example if you have a circuit with a microcontroller running some kind of program. If the voltage for the microcontroller drops for only a split second, the microcontroller restarts. And you don’t want this.By using a capacitor, the capacitor can supply power for the microcontroller in the split second that the voltage drops so that the microcontroller doesn’t restart. This way it will filter out the “noise” on the power line.This type of filtering is called “decoupling”. And a capacitor used for that purpose is called a “decoupling capacitor”. It’s also called a “bypass capacitor”.

Using Capacitors For Filters

You can also combine capacitors and resistors to form filters that target specific frequencies. For example in an audio system you can target the high frequencies to remove them (e.g. in a sub-woofer). This is called a low-pass filter.

Low-pass filter using a capacitor and a resistor


As one of the earliest capacitor manufacturers engaged in producing capacitor for over 27 years in china , we believe one day Dingfeng Capacitor will exist in every corner of the world by means of its reliable quality and good reputation. By the way,Dingfeng sincerely welcomes all the friend to visit our company and hopes to have a good communication and double-win partnership with all of you cause dingfeng capacitor is always on the way to be better! Your views are the driving forces of DingfengI hereby on behalf of all the members of Dingfeng, thank all of you for the long-term supporting and concerning of our growth.



ac motor running capacitor: http://www.dfcapacitor.com/Ac+motor+running+capacitor/

fan capacitor: http://www.dfcapacitor.com/Fan+capacitor/

air conditioner capacitor: http://www.dfcapacitor.com/Air+condition+capacitor/

lighting capacitor: http://www.dfcapacitor.com/Lighting+capacitor/

motor starting capacitor: http://www.dfcapacitor.com/Motor+starting+capacitor/

power capacitor: http://www.dfcapacitor.com/power+capacitor


power capacitor: http://www.dfcapacitor.com/power+capacitor


If you have any question about our company or dingfeng capacitor, pls contact us:


Foreign trade : Ruby Liu

Mobile: +86 15058285099

Tel: +86-574-88034090

Fax: +86-574-89111961

E-mail: sale06@dfcapacitor.com

QQ: 3421834036

Skype: sale06@dfcapacitor.com

Facebook;  Google +InstagramTwitterYoutubeLinkdein;