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Capacitor Selection

(3) Selection of the capacitor voltage circuit should be consistent with requirements. Under normal circumstances, the selection of rated voltage capacitor is the actual operating voltage of 1.2 to 1.3 times. The working environment of high temperature or poor circuit, the rated voltage capacitor selection should consider the use of drop, had a greater cushion words. Original position

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② humid environment in the work of the circuit should be used in good wet-sealed capacitors; original location

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① The capacitor used before, to inspect the quality of capacitors to prevent non-compliant capacitor circuit loaded. Original position

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④ welding capacitors difficult time is too long, too long because of the welding electrode pin temperature reached through the internal capacitor dielectric, so that the dielectric properties change. Original position

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③ in low temperature conditions using capacitors, should use cold capacitors, which electrolytic capacitor is particularly important because ordinary electrolytic capacitors at low temperature ice conditions will electrolyte lapsed. Original position

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Original position Third, based on “Securities Act” and “The acquisition of the management approach” provides that the change in shareholding has been full disclosure of the report the information disclosure obligations (including shareholders, as well as control shares concerted action)

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⑨ polar electrolytic capacitors are not allowed in the use of negative pressure, if more than this requirement, should be used Promise of electrolytic capacitors or to the same specifications of the two capacitors connected to the anode, cathode, respectively to the two of the circuit, this When the actual power capacity of the two capacitors in series, the equivalent capacity. Original position

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⑧ capacitor in series to increase the pressure. If the capacity of the same two capacitors in series, the total pressure can be doubled if capacity ranging from two capacitors in series, capacitance capacitors small to withstand the voltage is higher than that of large capacity capacitors. Original position

⑥ installed in the circuit capacitor, the capacitor should be easy to observe the signs installed in the position to check and maintenance. Original position

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Second, capacitors and the use of the original location of the attention

⑤ electrolytic capacitors require the use of long-term storage, not directly with rated voltage, otherwise there will be the risk of explosion. The correct way is to use: first raising smaller working voltage, then gradually increased until the rated voltage and voltage in the voltage to maintain a short period of time, then put into use. Original position

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③ will electrolytic capacitor load circuit, it must pay attention to the polarity of an anti-access, otherwise it will create substantial increase in leakage current, the capacitor rapidly heat damage. Original position

② components in the design of the installation, should enable the capacitor away from sources of heat, it will capacitors high temperature premature aging. In the installation of small capacitor circuit and high-frequency capacitors, the stent should be used to hold up capacitors to reduce the distributed capacitance of the circuit. Original position

⑦ capacitor parallel use, the total electric capacity equivalent to the total capacity of all, but it should be noted Shunt capacitor voltage of work which should not exceed the lowest rated voltage. Original position

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Rationally determine the capacity and the capacity of the allowable Dry capacitor deviation. In the low-frequency coupling and decoupling circuit, the general capacity to the capacity of the less stringent requirements, as long as calculated by selecting some of the larger electrical capacity would do. In the timing, tone and the oscillation loop control circuit, the electric capacity of the capacitor requirements more stringent, so choose the nominal capacity, as the calculated value of the capacitance value of identical or as close as possible to be elected to high precision capacitors . In some special circuit, often on the capacity of the capacity requirements very precise, this should be used to allow deviation of ± 0.1% ± 0.5% within the scope of high-precision capacitors. Original position

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If the capacitor circuit where the capacitor voltage higher Dry capacitor than the rated voltage capacitors are often prone to breakdown and to the entire circuit does not work. Original position

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(6) Selection of capacitor should take into account the requirements of the installation site. Original position

The capacitor voltage is generally rated DC voltage, in order to exchange for the circuit, in accordance with the characteristics and specifications capacitor selection; To circuit for Pulse, should pay, DC component shall not exceed the sum of the rated voltage capacitors to choose. Original position

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① use in high-temperature conditions should be used in the capacitors of high temperature capacitors; original location

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(4) preferred insulation resistance, dielectric loss small, small leakage current of capacitors. Original position

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Capacitor shape there are many, the selection shall be based on the actual situation of capacitors to choose the shape and size of pin. For example, as used in high-frequency bypass capacitor selection of the best heart-capacitor, it will not only easy to install, but also serving as the use of Posts. Original position

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(5) working environment should be based on capacitor choice capacitors. Capacitor performance parameters and the use of the environment is closely related to the conditions, so they should pay attention to in the selection of capacitors: Original Location

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