Weak current College】 【aluminum electrolytic capacitors for use considerations】.

<br> 1. circuit design <br> <br> (1) confirm its use and installation, as a product sample design manual provided on the <br> <br> Rated the performance scope of capacitors, should avoid the use in the .following cases: <br> <br> A) temperature (the temperature exceeded the maximum use temperature) <br> <br> B) flow (current exceeds the rated ripple current) <br> <br> C) over voltage (voltage .exceeds the rated voltage) <br> <br> D) imposition of a reverse voltage or AC voltage. <br> <br> E) used in times of rapid charge and discharge circuit. <br> <br> Other: ① in .circuit design, selection and machine life equivalent of capacitors. <br> <br> ② machine performance with special requirements, and research and development personnel, making applicable special regulation capacitors. <br> <br> (2) capacitor shell, secondary lead .Terminal and the just, the negative electrode and circuit board must be completely isolated; <br> <br> (3) when the capacitor bushing of the insulation is not guaranteed, insulation performance specific requirements please do not use the place; <br> .<br> (4) do not in any circumstances use capacitors: <br> <br> A) directly with water, salt and oil in contact, or dew environment; <br> <br> B) filled with poisonous gas environment ( .sulphides, H2SO3, HNO3, Cl2, ammonia, etc.); <br> <br> C) placed in the sunshine, O3, UV radiation and radioactive substances in the environment; <br> <br> D) vibration and shock than .the samples and specification requirements range of adverse environment; <br> <br> (5) in the design of the capacitor is installed, you must confirm the following: <br> <br> A) capacitors are, anode spacing must match the .printed circuit board hole distance; <br> <br> B) guarantee the capacitor explosion-proof valve above have a certain space; <br> <br> C) capacitors for explosion-proof valve above to avoid wiring and installation of other components .; <br> <br> D) Board, capacitor installation location, do not have other wiring; <br> <br> E) capacitor surrounding and circuit board design, installation, as far as possible avoid heating elements; <br> < .br> (6) in addition, in the design of the circuit, you must confirm the following: <br> <br> A) temperature and frequency changes do not cause changes in the electrical performance; <br> <br> B) .double-sided printing plate installed capacitors, capacitor installation location to avoid superfluous substrate hole and the hole; <br> <br> C) two or more capacitor parallel connection of current balance; <br> <br> D) two or more capacitors .in series connection of voltage balancing. <br> <br> 2, component installation <br> <br> (1) the installation, please observe the following: <br> <br> A) in order to carry out inspection and determination .of capacitor electrical performance, in addition to removing of capacitors, mounted on the machine through the power of capacitors do not reuse; <br> <br> B) when the capacitor voltage generated regeneration, by about 1 K Ω or resistance to discharge; .<br> <br> C) long-term preservation of capacitors, by about 1 K Ω or resistance pressure processing; <br> <br> D) confirm specifications (electrostatic capacity and rated voltage, etc.) and then install the polar .,; <br> <br> E) don't let capacitor fell to the ground, out of capacitors do not reuse; <br> <br> F) deformation of capacitors do not install; <br> <br> G) .capacitor, anode spacing and circuit board hole distance must kiss and; <br> <br> H) automatically inserting machine robot forces should not be too large; <br> <br> (2) welding, please confirm the following: <br .> <br> A) took note of the do not solder the Terminal outside; <br> <br> B) welding conditions (temperature, time, number of times) the instructions must be provided; <br> <br> C) .do not use capacitors itself immersed into the solder solution; <br> <br> D) welding, do not let other products fall into capacitor; <br> <br>.