Jiaen Semi provides customers with all-round high-quality technical support for deep cultivation of industrial control, photovoltaic inverter, power supply and other markets, and has established an application-level verification platform-metallographic microscope, 371 tester, K coefficient tester, TESEC T3430 dynamic test system, H3TRB high temperature and high humidity reverse bias system, PCT high pressure cooking test chamber, IOL intermittent life test system, HTXB high temperature gate bias reverse bias test system.
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To be honest, most of these circuits appear in interviews or textbooks to examine some people's understanding of triodes. But in the actual circuit, it is rare to see the triode working in the amplification area. Speaking of this, I also give reassurance to the college students in school. Every day in the textbook, "the collector is positively biased", and the "common collector and co-ejector" is very positive and that polar is reversed. To be honest, it is not very useful in work. If you do all these questions well, you will not be able to design an actual circuit; the engineer who designs the actual circuit may not necessarily be able to solve the problem.
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Jiaen Semi has launched new IGBT discretes -650V 75A & 650V 60A in TO-247 package . The two model adopts trench + field stop technology. They are with lower losses and higher energy efficiency for application such as solar inverter, servo drive amplifier and ups applications.
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Why Do Power Semiconductors Explode? The explosion of power semiconductor devices is generally in a short circuit state. The chip bears high voltage and high current at the same time, and the transient power loss is extremely large. When the short circuit state is too long (the driver is not well protected), the heat generated will break the chip (non-uniform internal stress) and the surrounding area in a short time. The material (surface aluminum layer, aluminum wire) vaporizes to produce an explosion.
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Transistor relay devices - IGBT chips are widely used in AC to DC control systems, new energy vehicles and industrial inverters, and are an important part of the modern power electronics industry. my country has made great progress in the field of IGBT chips in recent years. On the basis of the original technology, through comprehensive optimization and innovation, the performance and reliability of IGBT chips have been significantly improved.
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