There are two types of transistor based on their materials: germanium transistor and silicon transistor. And each of them has two structural forms, NPN and PNP, but the most commonly used are silicon NPN and PNP transistors. Except for the power polarity, their working principles are the same. The following only introduces the current amplification principle of NPN silicon transistors. Principle of current amplification.
A crystal diode is a type of diode made from semiconductor materials, also known as a diode or transistor. It has many advantages, such as small size, light weight, strong pressure resistance, long service life, etc., so it is widely used in electronic devices.
A crystal diode is a type of diode made from semiconductor materials, also known as a diode or transistor. It has many advantages, such as small size, light weight, strong pressure resistance, long service life, etc., so it is widely used in electronic devices.
There are two types of transistor based on their materials: germanium transistor and silicon transistor. And each of them has two structural forms, NPN and PNP, but the most commonly used are silicon NPN and PNP transistors. Except for the power polarity, their working principles are the same. The following only introduces the current amplification principle of NPN silicon transistors. Principle of current amplification.
According to data from CINNO, in the first half of 2025, there was a notable divergence in investment within China's semiconductor industry. The overall investment amounted to approximately 455 billion yuan, marking a year-on-year decrease of 9.85%. However, semiconductor equipment investment bucked the trend and increased by over 53%, signaling the accelerated rise of domestically produced equipment.
There may be several reasons for the damage
