With the rapid development of telecommunication technology, the structure of telecommunication network is becoming more and more complex.

The inverter power supply circuit is easy to produce a lot of heat under the condition of high voltage, high current and high frequency, in addition to taking appropriate cooling measures (such as…

　　Isolasjonstransformatoren nevnt her refererer til strømfrekvenstransformatoren som arbeider ved 5OHz frekvens. I UPS-strømforsyningssystemet, isolasjonstransformatoren er en hovedkomponent. According to the difference of…