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Capacitance in general as long as it is the capacity of the pressure can replace the same specifications and is that if the pressure is bigger than instead of capacitance can be replaced, if pressure is smaller than instead of capacitor will need to be careful with, and also note if it is the capacity to replace the different is also need to pay special attention to, and is the size with precision.
a. Replacing the high voltage capacitor with low pressure?
the answer is no, but not this is not absolute, assuming a electronic equipment inside the CBB capacitor damaged, and the capacity is 1 uf withstand voltage is 400 v, with 1 uf capacity with 630 pressure to replace is complete, if it is to use two 1 uf capacity of 250 v voltage parallel to the alternative theory, which is just on the space of the circuit board and has certain requirements, and is under the condition of mass production, for the machine and will be more a process, that take a single low voltage capacitor to replace than he high withstand voltage of capacitor, only two kinds of circumstances, the first or the design of the circuit board had not used the size of pressure only to the peak value of safety margin, even on low voltage capacitor is also can work just fine, just in the peak value under the condition of operation will directly out of order, the second is the most direct directly on electricity for an instant burst.
2. Replacing the high capacity with low capacity?
this is obviously not enough, even if in parallel is also very trouble, it is easy to another play a role, if the low capacity of capacitance directly to instead of the high capacity, what may not happen explosion of breakdown and so on, but the capacitance directly play a role of no effect, even if work, electronic equipment may be leakage or signal transmission is not correct or interfere with the chaos, that if take high capacity of the capacitor to replace low capacity, is feasible in theory, but there are also some capacitance is not to replace, because the direct replacement higher capacity of capacitors, will affect to a quick design originally good effect, high capacity will not be helping to make this replaced capacitor, unless the replacement capacitor itself without assuming the role of anything important, just a simple storage, that the direct replacement of large capacity and capacitance of the same pressure.
3. Accuracy with different sizes of capacitance can replace?
can use, but need to look to whether can match like capacity precision is replaced if the capacitance is K file is error in precision & plusmn; 10%, in J gears ( ± 5%) To replace, it is no problem, and to be better than before the capacitor performance more accurately, on the contrary to be error to replace high capacitance, low precision could be significantly, the influence of some effect play up and is not very good, such as some precision instruments that some will come out the effect of the deviation is very large, and the size of the different capacitance to replace this is little influence on the one hand, basically see capacitance is welded or plug-in, good location, if the circuit board design to replace the capacitor size is smaller than now, that's a bit more troublesome, this will affect the whole machine installation, so it's best to find small point, or volume is not out too much capacity to replace.
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