What Do You Know About Triode This time we expand the scope to NPN and PNP tubes, and give you some examples. The examples range from easy to difficult. If you can answer all of them, then you have a thorough understanding of triodes.
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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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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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A transistor is a semiconductor device used to amplify signals or act as an electrically controlled switch. A transistor is a three terminal device, a small current/voltage at one terminal (or lead) will control a large current between the other two terminals (leads). Transistors are essential components in almost all electronic circuits such as: amplifiers, switches, oscillators, voltage regulators, power supplies and most importantly digital logic ICs.
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1. What is IGBT? IGBT is a new type of power electronic device. Its basic structure is to add an insulating layer and a control electrode between the base and emitter of the transistor. IGBT combines the advantages of MOSFET (Metal Oxide Semiconductor Field Effect Transistor), such as high input impedance, low drive power consumption, fast switching capability, etc., and the advantages of BJT (Bipolar Transistor), such as high current carrying capacity, low conduction voltage drop, etc. Therefore, IGBT has broad application prospects in the field of power electronics.
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