Good work mobirise team.
First they assume that the Base current is somehow controlling the Collector current, then they try to explain how one current can affect another. These explanations invariably fail because Bipolar transistors, like FETs, are voltage-controlled devices.
Instead, the Base-Emitter voltage controls the thickness of an insulating "depletion layer" which lies in the path of both the Base current and the larger Collector current. This article delves into bipolar transistor internal operation: While solving design problems, engineers must model the transistor as a current amplifier, or as a transconductance device, or as a charge-controlled current source.
If you want to understand a transistor circuit, then the black-box model is what we use. I read many articles which explained the "Common Base" amplifier.
Common-base is the setup which was used by the inventors of the transistor. In those explanations, the Base is a grounded piece of Germanium and the input signal is applied to the Emitter.
Since common-base amplifiers are rarely used in transistor circuitry, I ended up having to dream up my own explanation. I based it upon the little bits I already knew about the Common Emitter configuration.
Common Emitter is the one where the Emitter is grounded, the Base is the input, and where the output is taken across a resistor connected to the Collector. I was full of niggling doubts. And why the hell were the textbooks using Common Base to introduce transistors to the newbies?
When I went into engineering school, I found it extremely odd that there were still no good explanations of bipolar transistors. Sure, there were detailed mathematical treatments. Just multiply the Base current by "hfe" to obtain the Collector current. Or, treat the transistor as a two-port network with a system of equations inside.
Ebers-Moll and all that. But these were similar to black-box circuits, and none of them said HOW a transistor works, how can a small current have any effect on a larger one???? And nobody else seemed curious. Everyone else in the class seemed to think that to memorize the equations was the same as learning concepts and gaining understanding of the device.
For me, math is useless at the start. First tell me what "Transistor Action" is all about. Show me animated pictures, use analogies. However, for me the math alone is not a genuine explanation. Math is just a tool or a recipe, a crutch for those who want nothing except the final numerical result, and it certainly does not confer expert knowledge.
Now many years have passed and I think I see the problem They misuse the word "current" as if it were a substance that flows. And they try to prove that the base current can have a direct effect on the collector current. Were they written in stone by god?
Below are my ideas on how transistors really work.- welcome to the wonderful world of soviet books.
- this site attempts to catalogue the amazing books in english, hindi and other indian languages, published the soviet union (ussr). “The EPIC Ventures team was with me since the beginning at Mozy and Instructure. They’ve been an ideal investor from the earliest stage onward. The Physics of Low-dimensional Semiconductors: An Introduction [Dr John H.
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The Physics of Low-dimensional Semiconductors: An Introduction [Dr John H. Davies] on grupobittia.com *FREE* shipping on qualifying offers. Low-dimensional systems have revolutionized semiconductor physics and had a tremendous impact on technology.
Using simple physical explanations. Neifeld IP Law is a patent attorney firm specializing in intellectual property and patent counseling, US and foreign patent and trademark prosecution, patent licensing, patent interference, and IP and patent litigation.
The office is located adjacent the US Patent and Trademark Office. "The difference between a conviction and a prejudice is that you can explain a conviction without getting angry." - anon When I first became interested in electronics as a kid, I sat down and figured out how bipolar transistors work.