In the DC voltage superimposed AC signal circuit, and to ensure that the minimum voltage superimposed will not be negative, you can use the polarity of the capacitor. The company is located in:

In the case of the same capacity, the polarity of the capacitor size and cost are much smaller than the polarity of the capacitor, so the need for a larger capacity case, the capacitor volume is a big contradiction, can use non-polar capacitor Of the occasion, will naturally be replaced with a polar capacitor, not only solved the volume problem, the cost is much lower, why not. The company is located in:

Large capacitor can filter out the AC signal above the lower frequency, small capacitor can only filter out the signal above the higher frequency. How large capacitor needs, according to the frequency of the signal to be filtered and the need to filter the decibel to determine. The company is located in:

In general, the presence of an electric field between two conductors creates a capacitance between the two conductors, and how large the capacitance is, the strength of the electric field between the conductors, the distance, the frequency of the dielectric and the power supply related. In electronic circuits, the capacitor of choice is decisive if the voltage and frequency, capacitor capacity, capacitor "quality factor", and mounting conditions have been set. The company is located in:

Capacitors in the electronic circuit is mainly for; signal coupling, RC circuit differential in volt-ampere characteristics such as integration, oscillation circuit in the "tank", bypass and power filter. The company is located in:

The type of capacitor is divided by the capacitor inside the dielectric to distinguish:

1. An air capacitor; a capacitor that uses air as a dielectric, such as a variable capacitor for "tuning" in the radio

2. Paper capacitor; with a special capacitor to do the dielectric capacitor. 3. Electrolytic capacitors; electrolytic capacitors for the dielectric. 4. Mica capacitors; use of natural mica as a dielectric capacitor. 5. Tile capacitors; single-layer ceramic dielectric material for the capacitor. The company is located in:

6. Monolithic capacitors; is also a dielectric material with ceramic capacitors, monolithic ceramic capacitors in order to solve the shortcomings of small capacity, in fact, is the use of capacitors in series with a plurality of ceramic capacitors; 7. Dacron capacitor; made of nylon material Dielectric capacitors. The company is located in:

8. Niobium capacitor; it is made of niobium metal anode, with dilute sulfuric acid and other liquid to do the negative with niobium oxide film on the surface of the media made of a capacitor

9. Tantalum capacitor; a capacitor made of tantalum (Ta) as the anode material. 10. Winding capacitor; is a kind of metal wire wound around the dielectric electrode for the capacitor, the wire can be changed by changing the way the number of turns to adjust the size of the electrode size to adjust the size. The company is located in:

11. Oil-impregnated paper capacitors; capacitors made of a neutral oil as dielectric, used in power systems. ...