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EnglishPin transformer: the basic principle of needle transformer and related knowledge
Release time:
2020-05-29
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pin transformerIt is a component that uses the basic principle of the magnetic effect of current to transmit electromagnetic energy or data signals. It has the functions of DC transformer, converter, variable characteristic impedance and isolation. The basic concept of the transformer is: when a sinusoidal AC voltage U1 is applied to both sides of the primary coil, there will be an alternating current I1 in the transmission line and cause alternating changes in the magnetic flux ф 1, which crosses the primary coil and the secondary coil along the iron core The coil produces a closed equivalent circuit. The mutually induced potential difference U2 is magnetically induced in the secondary coil, and the ф 1 also magnetically induces a self-induced potential difference E1 on the primary coil, and the orientation of E1 is reversed with the orientation of the applied working voltage U1 and the strength is similar, thus limiting the size of I1. In order to maintain the existence of magnetic flux ф 1, there must be a certain amount of electromagnetic energy consumption, and the transformer itself also has a certain loss. Although the secondary coil is not loaded at this time, there is still a certain amount of current in the primary coil, which is called "full load current". It is the full load current quantity.lead type transformer
pin transformerIt is a kind of transformer, and the pin transformer is not very common in daily life. What are the characteristics of the pin transformer? Today, it is said that the pin transformer!
pin transformerAlso known as pcb transformer or plug-in transformer and plug-in fire cow, it is a transformer that uses electric welding to weld the key-in and output winding resistance of the transformer with the needle angle on the compression mold of the transformer skeleton (usually 0.5mm -0.65mm copper clad steel) and is installed on the PCB circuit board.
1. Transformer pin insertion: transformer paper PIN, transformer package needle, transformer PIN needle, wrapping paper PIN needle, EI transformer needle angle, thread foot and false foot. An electronic device connecting a transformer and a circuit board. The wire pin is made of electroplated tin copper core wire.
2. Characteristics of pin insertion of transformer: accurate pin length (positive and negative electrodes 0.5mm) and excellent weldability. The interval dimension tolerance is small (positive and negative electrodes are 0.3mm), the needle is tightly attached, the convex and concave are obvious, and the surface layer is leveled without wear marks.
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