Choke is used to prevent low frequency alternating current, pulsating direct current to pure direct current circuit, used in the middle of the two filter capacitors at the output end of the rectifier circuit, is to prevent high frequency current from flowing to the low frequency end, such as: high frequency choke in the old regenerative radio. The filtered inductor prevents the rectified pulsating DC current from flowing into the pure DC circuit.
choke refers to the coil some wound on the ferrite core, some hollow, the number of turns is hundreds or dozens, the self-inductance coefficient is a few millihen. High frequency chokeFlow coils and low frequency chokes are inductors. The inductor coil has the characteristic of suppressing current change, and the larger the inductance, the more obvious this effect is. This effect on the obstruction of the current is induced, and the size of the inductive reactance and the operating frequency of the inductor are related to the size of its own inductance.
Action: choke action The self-induced electromotive force in the coil is always counterbalanced by the change in current in the coil. The inductor coil has a blocking effect on the AC current, and the size of the blocking effect is called the inductive reactance xl, and the unit is ohms. Its relationship with inductance l and AC frequency f is xl=2πfl, inductors can be mainly divided into high frequency choke coil and low frequencyChoke coil. lc tuning circuit can be formed by parallel operation of inductors and capacitors.
In terms of function, inductors have a variety of categories. For example, the antenna coil is mainly used for wireless communication, and the oscillation coil plays a role in the signal oscillation circuit; Choke coils are used to suppress the AC component of the current, notch coils are used for filtering, and deflection coils are used in electronic devices to control direction or frequency, etc.
First understand the circuit diagram of the bidivider: the L in the figure is the inductor coil, which can be used with 0.5 ~ 0.8 enameled wire (the horn output power is large with 0.8 enameled wireSmall with 0.5 enamelled wire), wound into 150 ~ 200 laps of hollow coil, hollow diameter 1 ~ 2 cm, and then in series in the subwoofer circuit.
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Phase 1 Wireless coil-filling winding machine : April 15-19, 2024 Wireless coil-filling winding machine , Phase 2: April 23-27, 2024, Phase 3: May 1-5, 2024. China Import and Export FairCanton Fair, founded on April 25, 1957, is held in Guangzhou every spring and autumn, jointly sponsored by the Ministry of Commerce and the People's Government of Guangdong Province, and hosted by China Foreign Trade Center.
Address of Canton Fair Pazhou Pavilion Located in Pazhou New District, Guangzhou, is one of the main pavilions of the China Import and Export Fair (hereinafter referred to as the Canton Fair). Construction of the pavilion began in 2002 and it was put into use in 2008, with a total floor area of more than 1.3 million square meters. At present, the Canton Fair Pazhou Pavilion has become one of the largest exhibition and trading centers in Asia.
Guangzhou carThe exhibition venue is Pazhou Exhibition Hall of China Import and Export Fair. The 2023 Guangzhou International Auto Show will be held at the China Import and Export Fair Pazhou Pavilion from November 17 to 26, 2023. The exhibition covers more than 800 exhibitors and brands from all over the world, with a display area of more than 200,000 square meters, showing the latest automotive technologies, products and industrial supporting services.
Exhibition time and address: - The 134th Canton Fair is scheduled to open on October 15, 2023, and is divided into three phasesThe site is located in Pazhou Exhibition Hall of China Import and Export Commodities Exchange (380 Yuejiang Middle Road, Haizhu District, Guangzhou, China).
year of the exhibition is coming, the following is the time and place of the exhibition, hoping to provide you with valuable information. From August 3 to August 4, the 8th International American Chen Exhibition Guangzhou station will be held in Guangzhou Poly World Trade Center. From August 8 to August 10, China Guangzhou Heating and ventilation, Heat exchanger, drying, boiler and heat pump Industry Expo will be held in the Canton Fair Pazhou Exhibition Hall.
August Guangzhou exhibition schedule is as follows: 2023 the 8th International American Chen Exhibition Guangzhou Station, the time isFrom August 3rd to August 4th, the venue is Guangzhou Poly World Trade Center. 2023 China Guangzhou Heating and ventilation, Heat exchanger, drying, boiler and heat pump Industry Expo, time from August 8 to August 10, located in the Canton Fair Pazhou Pavilion.
1, generally speaking, it is a subsidiary company of Lichun Group, very professional, listen to the boss to open a staff meeting said to be listed in 3 to 5 years. Like Huawei's R&D department,Pay more attention to professional theoretical basis combined with practice, often test theoretical knowledge. The treatment is relatively high, at the upper level of the automation industry, and generally the engineers who can design automata can get more than 15K monthly salary, and year-end bonuses.
2, enterprise know data show that Jiangsu Lichun Robot Co., Ltd. was founded on 2013-05-07, registered capital of 3000.0 million yuan, the number of insured 1,286 people, is a national high-tech enterprises engaged in computer, communication and other electronic equipment manufacturing. The company has been awarded "National high-tech enterprises" and "provincial workers.Cheng Technology Research Center and other qualifications and honors.
3, Suzhou Lichun robot undergraduate students. According to the relevant public information, the conditions for joining Suzhou Licun Robot Company are undergraduates. Fresh graduates account for 25 percent of the total. The salary is good, the salary is high.
4, more overtime. According to professional Youji, 61 netizens participated in the voting of Jiangsu Licun Robot Co., LTD., of which 58 votes (95%) reported that they often worked overtime, and 3 votes (5%) reported that they did not work overtime or occasionally. The company was founded in 2013, located in Suzhou, Jiangsu Province, is a company engaged in special equipment manufacturingAn enterprise based on manufacturing.
5, Jiangsu Licun Robot Co., Ltd. business scope is: robot, precision metal mold, automation equipment, metal tool parts, mechanical and electrical equipment production and sales; Precision machining; Self-operated import and export business of various commodities and technologies. (Except for the permitted operation, restricted operation or prohibited operation as stipulated by laws and administrative regulations in the aforementioned business projects) (for projects subject to approval according to law, business activities can only be carried out after approval by relevant departments).
6, once a year per person. According to the official information of Lichun Robot, the group has an annual salary adjustment opportunity for each personThe increase is based on the performance assessment of the previous year, and the comprehensive increase is 800 to 1500 yuan. Jiangsu Licun Robot Co., Ltd. is a technology-oriented company, focusing on the development and production of automation equipment. The company is mainly engaged in robot, precision metal mold, automation equipment, metal tool parts and so on.