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What is an unpolarized capacitor?

A capacitor that does not have a designated + and - side. Electrolytic capacitors are usually polarized. Ceramic capacitors are not.


What is the response of ceramic capacitor in MHz and GHz Range frequencies?

That depends on the value of the capacitor and other components in the circuit.


Difference between ceramic and electrolytic capacitors?

In ceramic capacitors the dielectric is a thin layer of ceramic and both plates are metal foil. These capacitors are unpolarized. These capacitors have negligible internal inductance or resistance.In electrolytic capacitors the dielectric is an ultra thin layer of corrosion on the surface of a metal foil plate and the other plate is an electrolyte paste. These capacitors are polarized and if connected backwards are likely to explode. These capacitors have significant internal inductance, making them bad filters of noise in the MHz range and above which requires ceramic capacitors.


How do capacitors classified?

capacitors are classified on the basis of dielectric material used inside it. For example the electrolytic capacitor consist electrolyte as dielectric mica capacitor consist mica as dielectric between plates and ceramic capacitor consist ceramic as dielectric.


What type of capacitor is normally polarized?

There are many different cpacitor technologies, or 'types'. To name a few, there are Electrolytic, Ceramic, Polypropylene Film, and Metalled Paper capacitors. The only type of capacitor commonly polarized are Electrolytic Capacitors. This means DC supply only. Dealing with AC? I'd recommend ceramic.


What is the basic difference between disc type capacitor and electrolytic capacitor?

A: it is the value disc type are small while electrolytic are big in value.The dielectric in a disc capacitor is ceramic, the dielectric in an electrolytic capacitor is a very thin corrosion layer on one of its metal foil plates.The conductive plates in a disc capacitor are two metal thinfilms on opposite sides of the ceramic, the conductive plates in an electrolytic capacitor are one of the metal foil plates and the electrolyte paste between the metal foil plates.A disc capacitor is ready to sell and use as soon as it has been built, an electrolytic capacitor will not work at all when it is first built (it is an electrical short circuit) it must be formed by passing a controlled current through it for several hours to cause corrosion of one of the metal foil plates.The parasitic inductance of a disc capacitor is less than that of any other type of capacitor, the parasitic inductance of an electrolytic capacitor is greater than that of any other type of capacitor. This makes disc capacitors better for use in circuits involving high frequencies and electrolytic capacitors better for use in circuits involving very low frequencies and/or DC.The parasitic resistance of a disc capacitor is extremely high resulting in extremely low leakage, the parasitic resistance of an electrolytic capacitor is low resulting in high leakage. In fact this leakage current in an electrolytic capacitor is essential to keeping it healthy and working in use, without it the corrosion layer dielectric slowly dissolves away into the electrolyte paste. Reversal of polarity of an electrolytic capacitor dramatically hastens this, rapidly removing the corrosion layer and shorting the capacitor resulting in both uncontrolled heating and electrolysis of the water in the electrolyte paste; the extremely rapid generation of gases causes a violent explosion of the electrolytic capacitor!The capacitance of a disc capacitor tends to be low in relation to its physical size compared to other types of capacitor, the capacitance of an electrolytic capacitor is higher in relation to its physical size than any other type of capacitor. This is due mostly to the differences in the thickness of the dielectrics.


What are the different types of capacitors?

Ceramic capacitors, film capacitors, multi-layers ceramic capacitors, electrolytic capacitors, mica capacitors, super capacitors, etc. -- We're JYH HSU(JEC) Electronics Ltd (or Dongguan Zhixu Electronic Co., Ltd.), an electronic components manufacturer. You may google search "JYH HSU" to find our official website.


How ceramic capacitors can do filtering in replacement of electrolytic capacitors?

Electrolytic capacitors do a very good job of bulk filtering, but they have poor high frequency performance due to distributed inductance. The ceramic capacitor has excellent high frequence response, and will often be used in parallel to the electrolytic to filter out fast rise time step changes in current demand.


Is capacitor polarity sensitive?

Some capacitors are polarity sensitive; some are not. It depends on the design. Electrolytic capacitors, for instance, are polarity sensitive, while ceramic disc capacitors are not. You can generally tell, if the capacitor is marked with polarity signs, such as + and -, if it is or not.


What is the use or ceramic capacitor?

ceramic capacitor does not simultaneously discharges instead it maintains stead flow of charges through it


Can you replace ceramic capacitor with a polyester?

yes ceramic can be replaced by polyester


What are the different ways a Capacitor can be used in circuits?

There are several types of capacitors (mainly depending on dielectric: electrolytic, coiled paper, air, ceramic) and for different purposes, the main idea for them is to allow current path for high frequency but a capacitor does not have only capacitance, it does have certain amount of series resistance and inductance depending on design so what works fine in audio frequencies do not do same job for radio frequencies or microwaves as the parasitic inductance becomes relevant. Some other use is tunning or preset where the capacitance is adjustable in order to accomplish resonance with an inductance. A capacitor (series of) is used in a ladder with diodes to rise DC from a low voltage oscillator. Killing HF oscillation is another use avoiding parasitic feedbacks.