BJT、JFET、MOS管，最基础的3种三极管。在原理上，他们的共性 …
BJT的关键变量是Vbe、Vce、Ic，JFET与MOS管的关键变量都是Vgs、Vds、Id。 由这些具体可以概括出： 三极管需要处理的变量都是3个，即控制量、主通道电压、主通道电流。 做数据拟合 …
现在大部分电路都使用 MOSFET，为什么还要学 BJT？ - 知乎
BJT作为输出级时，只要将BJT接成射极跟随器（共集电极组态），单管就很容易做到100欧姆以下的输出电阻，如果是大电流功率输出级，由于电导调制效应的作用，发射结电阻极低，很容易 …
BJT三极管，原理实质上真的是电流控制器件吗？总感觉其实是电 …
都2022年了，「BJT三极管是电流控制器件」的观点，还在流行。 不仅掩盖了三极管有趣的灵魂，还遮蔽了半导体中磅礴的力量。
BJT Q-Point - All About Circuits
Aug 13, 2022 · What's magical about 10 V? Just because it is half of Vcc? Remember what the Q-point is. It is the DC operating point of the circuit with no signal applied. You calculated that …
3-stage BJT amplifier - All About Circuits
Apr 15, 2025 · I'm trying to build a 3-stage BJT amplifier to amplify the signal from an electret microphone and drive a 3W, 8Ω speaker. I'm kinda stuck and need some help. My idea is to …
BJT-based Astable Multivibrator Circuit Design - All About Circuits
Dec 19, 2024 · Need help in designing a 3.3V input voltage astable multivibrator circuit that would generate a 1-second duration pulse periodically every 3 hours for microcontroller reset. Need it …
Collector Base Junction controlling reverse or forward bias
May 28, 2012 · Im missing a concept regarding saturation, active mode of a npn transistor. for a bjt npn to be in saturation mode the collector base junction is forward biased and the base …
How do you turn on an NPN BJT Transistor? - All About Circuits
Oct 8, 2016 · So.. here it goes. I'm going to try give my hypothesis, as to how these NPN BJT Transistors work. The Vebo (Emitter Base Voltage) is the positive voltage to be applied to the …
为什么mos是多子型器件而Bjt是少子型器件？ - 知乎
这个电压值，称之为MOS管的阈值电压：Vgsth。 3，BJT为什么是双极型器件（双载流子），且少子占主导 这个问题比较难解释，需要理解更多的背景基础知识。 简单来说，我们在最开始讲 …
Base and Emitter are short circuited | All About Circuits
Jun 19, 2020 · In an NPN BJT, conduction can ONLY occur when the base is at a potential of about 0.7 volts above the emitter. When the base and the emitter are shorted together, this …