Transistor in the circuit commonly used "Q" plus numbers, such as: Q17 said the number 17 transistor.
1, Features: Transistor (referred to as the transistor) is an internal 2 PN junction, and has the ability to enlarge the special device. It is divided into two types of NPN and PNP type, the two types of transistors from the working characteristics can make up each other, the so-called OTL circuit is PNP-type and NPN-type pairing.
2, the transistor is mainly used for amplifying the amplification circuit, there are three common ways in the connection. In order to facilitate comparison, the characteristics of the transistor connected to the three circuits are listed in the following table, for your reference.
Name of the total emitter circuit common collector circuit (emitter output) common base circuit
Input impedance (a few hundred European ~ a few thousand Europe) large (tens of thousands of European or more) small (a few European ~ dozens of European)
Output impedance (a few thousand European ~ tens of thousands of European) Small (a few European ~ dozens of European) Large (tens of thousands of European ~ hundreds of thousands of European)
Voltage magnification size (less than 1 and close to 1) large
Current magnification (tens) Large (dozens) Small (less than 1 and close to 1)
Power amplification factor (about 30 ~ 40 decibels) small (about 10 decibels) (about 15 ~ 20 decibels)
High frequency difference of frequency characteristic is good
Welded Cement Silos (Single Piece)
The cement silo (cement tank) has a cylindrical structure, and the bottom is supported by four round tube legs. The whole silo is in the form of steel structure and welded; the top is provided with a dust collector and a pressure safety valve.
Cement silo (cement tank) has the following parts: the silo body steel structure part, the ladder, guardrail, feeding tube, dust collector, pressure relief valve, high and low level meter, the discharge valve, etc
The horizontal feeder has large capacity, high volume utilization, convenient installation and adjustment, compact structure, light weight, easy operation and convenient transfer; small terrain restriction, easy for process layout.The main machine is mainly composed of double cone tank feeder, unloading port gas system and tank support.
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