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Technological innovation
HOTLine：0769-2268 1472
According to the structure can be divided into: fixed capacitors, variable capacitors, trimming capacitors.
Press dielectric materials can be divided into: gaseous medium capacitors, liquid dielectric capacitors, inorganic solid dielectric capacitors, organic solid dielectric capacitance electrolytic capacitors.
Divided according to the polarity: polar and non-polar capacitor capacitance. We most often see is the electrolytic capacitors.
DC blocking capacitors in the circuit has, by alternating the role, so commonly used in the inter-stage coupling, filtering, decoupling, bypass and signal tuning
Capacitance SymbolCapacitance symbol same standard notation into domestic and international electronic notation, but the capacitance at the national and international representation symbol are similar, the only difference is in the polar capacitor has a domestic is an empty basket below a horizontal line , while international is common capacitance plus a "+" symbol represents the positive electrode.
The unit of capacitanceThe basic unit of resistance is: F (France), in addition μF (microfarads), pF (picofarads), in addition to a unit with less, and that is: nF (), since the capacitance F is very Great, so we see are generally μF, nF, pF units, rather than units of F.
Specific conversion between them as follows:Each capacitor has its voltage value, which is one of the important parameters of capacitance. Promise of ordinary nominal voltage value of the capacitor are: 63V, 100V, 160V, 250V, 400V, 600V, 1000V and so on, there is a polar capacitor voltage value than the polar opposite of the capacitor voltage is lower, the general standard He said voltage values ??are: 4V, 6.3V, 10V, 16V, 25V, 35V, 50V, 63V, 80V, 100V, 220V, 400V and so on.
Kind of capacitorThere are many types of capacitors, can in principle be divided into: Promise of variable capacitance, polarity fixed capacitance, polar capacitors, etc., from the material can be divided into: CBB capacitance (polyethylene), polyester capacitors, ceramic capacitors mica capacitors, monolithic capacitors, electrolytic capacitors, tantalum capacitors. The following table shows the advantages and disadvantages of various capacitor:
The advantages and disadvantages of various capacitor: Advantages Disadvantages polarity name making no sense of CBB capacitor 2 layer vinyl and no sense of polypropylene, high-frequency characteristics are not suitable for bigger capacity, two layers of metal foil are alternately mixed well, smaller and relatively high price and then Bundled together, heat resistance is poor.
No CBB capacitance 2 layers of polyethylene plastic and felt, other ibid.? Br /> 2 alternating layers of metal foil inclusions then bundled together.
No ceramic capacitor thin ceramic film on both sides of the transition metal, small size, high pressure, fragile! Silver from low capacity. Low price, high frequency (one of which is a high-frequency capacitance) easily produce two metal plating on non-mica capacitors mica, large technical volume, small-capacity, low-temperature-stabilized film content (hardly used) good no monolithic capacitor volume is smaller than the CBB, the other with the CBB, felt a large two-piece aluminum electrolytic capacitor and two insulating capacity. Good high-frequency characteristics.
Membrane laminated to each other, after the turn bundle immersed in electrolyte solution (acidic solution containing synthetic) in.
There tantalum metal tantalum as a positive, good stability, high capacity, high cost. (Usually in the electrolyte outside the metal spray good high-frequency characteristics. For critical areas) as the negative electrode.
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