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Monolithic capacitors have polarity?

by:SMiLer     2021-02-16
Capacitance according to the presence of large amount of polarity can be divided into categories, the so-called polar is refers to has the branch is negative. Nonpolar nature is no is negative capacitance. Due to the importance of is negative, so you must know how to recognize different capacitance is negative, otherwise it will cause the reverse phenomenon, and even explode. The monolithic capacitors have polarity? Monolithic capacitor and ceramics capacitors are non-polarity capacitance, for polar capacitor, if don't know if it is negative, can through the following methods to identify. We all know that only the positive power of the electrolytic capacitor is ( When electricity is black pens and) And the negative termination power negative ( When electricity is red pens and) , electrolytic capacitor leakage current is small ( Leakage resistance) 。 On the contrary, the electrolytic capacitor leakage current increase ( Leakage resistance decrease) 。 When measuring, suppose a very first '+', let its black pens and connect with multimeter, another electrode red pens and connect with multimeter, take note of the clock stopped scale ( The clock is great value on the left) And then the capacitor discharge ( Both two fuses touch) , two pens and switch and measure again. The location of the two measurement, whose hands finally stay (on the left Resistance) The black pens and pick up is electrolytic capacitor anode. Measurement when had better choose 100 or R * R * 1 k. In addition, direct plug-in polarity capacitor is negative in the general case is long feet is positive, short feet is negative, but may also be others had to cut short the long, accurate, so in order to use the following method. Usually in gray part generally there are two rectangular box, so next to the grey part of the recent pin is negative, this is the most accurate judgment, and will not go wrong, it is recommended to use this method! Monolithic capacitor has the advantage of large capacity, small volume, small leakage current, capacity, stability, reliable performance, good, good frequency characteristic and temperature characteristic is widely used in electronic precision instruments. No positive negative monolithic capacitors. That is no polarity. Monolithic capacitors is larger than general ceramics capacitor value ( 10 pf ~ 10μf) Not only alternative mica capacitor, monolithic capacitor and paper condenser, also replaced some tantalum capacitor, widely used in the small and tiny electronic equipment ( Such as LCD watches and miniature instruments) In the. Monolithic capacitors have polarity? This kind of capacitor has no polarity, the above is to introduce the polar capacitor is negative recognition method, might as well can be determined according to the identification and judgment. In order to avoid is negative after the explosion. The characteristics of monolithic capacitor and the characteristics of ceramics capacitors and what's the difference? Monolithic capacitor is characterized by: 1, large capacitance, stability, capacity range is 10 ~ 10 uf pf; 2, small volume, smaller than the CBB capacitance volume; 3, good high-temperature wet resistance; 4, small temperature drift coefficient, and the characteristics of the ceramics capacitors is: 1, small volume, high frequency characteristics; 2, high voltage than monolithic capacitor; 3, small capacity, the biggest only 0. 1uF; 4, low prices than monolithic capacitor. Because of monolithic capacitor and ceramics capacitors have different characteristics, so in life are also different in application, the application of monolithic capacitors mainly in liquid crystal watches, electronic camera, mini instrument, medical equipment, electronic tuner. And ceramics capacitors used mainly in the high-frequency oscillation circuit, bypass, decoupling. More wonderful reading: monolithic capacitors have is negative monolithic capacitance parameter _ monolithic capacitor and tantalum capacitor distinguish the difference between monolithic capacitors and electrolytic capacitors monolithic capacitor fault judgment
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