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At 0:00 on January 14, 2014, the maximum retail price of natural gas for vehicles in Yantai City was adjusted from 5.03 yuan/cubic meter to 4.97 yuan/cubic meter, down by 0.6 yuan/cubic meter. The Yantai Municipal Price Bureau reminded the urban natural gas operating companies to strictly implement the price policy, publicize the sales price in a conspicuous place in business premises, and accept social supervision. At the same time, the price departments at all levels must strengthen the supervision and inspection of natural gas prices for vehicles and investigate and deal with price violations in accordance with the law.
According to regulations, the price of natural gas for vehicles in Yantai City will be linked to the price of gasoline. When the state adjusts the price of gasoline uniformly, according to the actual situation in Yantai City, the Yantai Municipal Price Bureau will announce the price of natural gas for use in urban areas. Enterprises must not raise prices by themselves. At 24:00 on January 10, 2014, the price of refined oil was lowered, so the price of natural gas for use in urban areas was also adjusted accordingly.
Automatic Common Mode Inductance Winding Machine
Common mode inductor winding direction difference?
1: Is the winding direction of common mode inductor opposite? This is bullshit. The winding direction of common mode inductors is the same, and the magnetic fluxes of common mode current parameters cancel each other. Therefore, magnetic materials with high permeability can be used to achieve small volume and large inductance without saturation. The interference between the two power lines to the ground is called common mode interference. How does this common mode inductor work when there is no ground wire on my power supply? The so-called common mode current is the current flowing into or out of the LN line at the same time. When testing the conduction, use the artificial LISN network. The relevant knowledge can remind you not to forget the parasitic capacitance of PE.
2: Common mode winding inductance is to wind two windings with the same phase and same number of turns on the same magnetic core. The reverse magnetic field generated by the current will cancel each other, so it will not cause saturation. As for the winding direction you see, I don't know if it is the winding direction. If it is wound on the same side, then the two winding directions are opposite, one clockwise and the other counterclockwise, If it's a different side winding, it's clockwise. So this problem is a little different. It depends on how you define it. No matter how you wind, it's OK to ensure the same phase and number of turns. For the second question, refer to the answer from the upstairs. Generally, the test conduction needs to be connected to the LISN, and output to the load, the load and the product to be tested through the LISN. There is GND access signal on the LISN.
What is the difference between wound inductor and laminated inductor?
Wound inductor is the product of traditional wound inductor miniaturization. Laminated inductor is made by multi-layer printing technology and laminated production process, and its volume is smaller than wound chip inductor.
Winding inductor: it is characterized by a wide range of inductors (MH ~ H), high accuracy of inductor, small loss (i.e. large Q value), large allowable current, strong inheritance, simple manufacturing process and low cost; The disadvantage is that it is limited in further miniaturization. The ceramic core wound chip inductor can maintain a stable inductance and a fairly high Q value at such a high frequency, so it occupies a place in the high frequency circuit.
Automatic Common Mode Inductance Winding Machinery, Common Mode Winding Machine, Common Mode Inductance Winding Machine
SUZHOU DEGU MACHINERY CO.,LTD , https://www.deguwindingmachine.com