
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?
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 …
Remark 1 :三极管放大电流的本质是什么? 由上述放大过程,我们不难看出BJT是电流控制电流源。 但本质上,BJT仍是电压控制电流源,我们是通过Vbe的微变,来控制Ib电流的指数响 …
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 …
Adding transistor library to LTSpice | All About Circuits
Jul 27, 2020 · Hi Sam, Find the standard.bjt folder in your LTSpice, I use Microsoft Explorer to display the files This is my Path to the folder, Yours should be the same. Use a text editor to …
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 …
三极管和 MOS 管的区别是什么? - 知乎
Sep 9, 2021 · 三极管(BJT:双极型晶体管)和MOS管(MOSFET:金属-氧化物-半导体场效应晶体管) 都是可控开关。三极管(BJT)通过对Ibe电流来实现对Ice大小的控制,MOSFET通过 …
BJT transistors as voltage-controlled devices - All About Circuits
Nov 28, 2008 · Hi Everybody, I recently received an email from a reader suggesting a change to the chapter on bipolar junction transistors, citing a comment by Douglas Self on transistor …
BJT Totem-Pole Power MOSFET driver (Low side) How and why?
Sep 13, 2010 · BJT transistors handle analog quite well, which includes audio and analog power supplies (while MOSFETs handle SMPS (switching mode power supplies, which is digital)) …
晶体三极管如何工作的?我是问它的真实工作原理? - 知乎
晶体管(BJT)的本质是至少需要0.7V才能将其打开,通过基极的电流是性能的决定性因素。 随着基极电流增加,集电极电流也增加。 晶体管(BJT)和MOSFET不同,MOSFET是在栅极电 …