To ensure that the city night lighting is operating normally during the two sessions of the country to prevent safety accidents, the Beijing Municipal Administration Committee issued a notice recently requesting the safety inspection of the city night lighting facilities before the two sessions. The inspection will focus on the hidden dangers involving personal safety and normal operation safety in accordance with Olympic standards.
It is understood that the key areas of night lighting inspection include Chang'an Street, the representative of the Beijing Hotel and its surrounding areas. Chang'an Street focuses on the lighting facilities of office buildings, hotels and government agencies. Due to the prolonged drought in Beijing and the recent rain, the staff will check the lighting facilities for short circuits and leakage. In addition, the bridges on the city's bridges and overpasses will be checked one by one to prevent safety hazards caused by lamp leakage or wire aging.
According to the relevant person in charge of the Beijing Municipal Administration Committee, the inspection of lighting facilities before the two sessions this year is stricter than before, according to Olympic standards. In addition to the unit self-examination and spot checks, the relevant municipal departments and other relevant lighting experts and related lighting experts will also organize inspection teams to inspect the lighting facilities, and the problems found during the inspections will be rectified by the responsible units within a time limit and notified according to the problem. .
Zhong Xincai came back to talk about the impact of the current situation on the Buddha photo (Figure) [National high-efficiency lighting promotion work everyone talks] [CLDA first president Xie Maotang]
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The electrolyte material inside the electrolytic capacitor, which has charge storage, is divided into positive and negative polarity, similar to the battery, and cannot be connected backwards.A metal substrate having an oxide film attached to a positive electrode and a negative electrode connected to an electrolyte (solid and non-solid) through a metal plate.
Nonpolar (dual polarity) electrolytic capacitor adopts double oxide film structure, similar to the two polar electrolytic capacitor after two connected to the cathode, the two electrodes of two metal plates respectively (both with oxide film), two groups of oxide film as the electrolyte in the middle.Polar electrolytic capacitors usually play the role of power filter, decoupling (like u), signal coupling, time constant setting and dc isolation in power circuit, medium frequency and low frequency circuit.Non-polar electrolytic capacitors are usually used in audio frequency divider circuit, television S correction circuit and starting circuit of single-phase motor.
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