Low-frequency transformer belongs to a kind of input transformer, its appearance and power transformer is extremely similar. There are low-frequency transformers, naturally, there are also high-frequency transformers, what is low-frequency and high-frequency? The so-called high-frequency transformer, naturally, because the frequency of different high and low, each with a different intention, the propagation of the signal voltage is naturally different, the signal power for high-frequency transformer and low-frequency transformer signal difference is also very different. In the use of transformers at the same time, must figure out whether they are using the right, or use the wrong transformer, can be said to hurt it.
The most basic type of transformer, including two sets of coils around the wire, and each other inductively together. When an alternating current (with a known frequency) flows through one set of coils, an alternating voltage with the same frequency is induced in the other set of coils, and the magnitude of the induced voltage depends on the degree of coupling of the two coils and the degree of magnetic cross-linking.
Generally, the coil connected to the AC supply is called the "primary coil" (Primary?coil); and the voltage across this coil is called the "primary voltage...". The voltage across this coil is called the "primary voltage...". The voltage induced in the secondary coil may be greater or less than the primary voltage, which is determined by the "turns ratio" between the primary and secondary coils. Therefore, transformers are divided into step-up and step-down transformers.
Most transformers have a fixed core on which the primary and secondary coils are wound. Due to the high permeability of the iron, most of the magnetic flux is confined to the core, so that the two sets of coils can be magnetically coupled to each other to a fairly high degree. In some transformers, the coils and the core are so tightly coupled that the ratio of the primary and secondary voltages is almost the same as the turns ratio of the coils. Therefore, the turns ratio of the transformer can generally be used as a reference pointer for transformer step-up or step-down. Because of this step-up and step-down function, make the transformer has become one of the modern electric power system important incidental, enhance the transmission voltage makes the long-distance transmission of electricity more economical, as for the step-down transformer, it makes the electric power use more diversified, we can say that, if there is no transformer, then the modern industry really can not achieve the current development of the present situation.
Electronic transformer in addition to the smaller size, in the power transformer and electronic transformer between the two, there is no clear demarcation line. Generally provide 6OHz power network power are very large, it may be covered by half a continent as large as the capacity of the region. The power limitations of electronic devices are usually limited by the rectification, amplification, and other components of the system's capacity, some of which are amplified power, but if compared with the power system's generating capacity, it is still categorized as a small power range.
Low-frequency transformer using high efficiency, low loss, environmental protection line design; with overvoltage protection, overload protection. The product is beautiful and generous, shell with high temperature flame retardant, ultrasonic welding, the use of safe and reliable; output interference is very small, stable output voltage, can better extend the service life of the external appliances.
Technical indicators:
Input rated voltage: single-phase 220VAC
Operating frequency: 50HZ
Output voltage: 12VAC
Output current: power: 8W
Specifications: ei41*26Weight: ?g
Efficiency: ≥98%
Temperature rise: <85℃
Waveform distortion: <0.1%
Insulation strength: 2000V, 1 minute without breakdown
Insulation resistance: winding resistance to ground insulation resistance single-phase ≥ 2.2MΩ
It is well known that the use of low-frequency transformer ambient temperatures should never be more than a minimum of minus fifteen degrees Celsius, and the highest do not More than the hot forty degrees Celsius, just like human beings, these two extreme temperatures are the last bottom line of our contact, so we must control the temperature is good. The relative humidity of the surrounding air should also be less than or equal to eighty-five percent, never exceed this amount is good, you know? Although it is not more than 40 degrees, in this condition of heat resistance, low-frequency transformer can be said to be the best it.
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