Numerical problems on transistors Definition
History of the transistor - diffusion transistor, , mesa transistor (Fairchild 1957), tetrode transistor, pentode transistor, Etc... With the fragility problems solved, a remaining problem was purity...
Transistor - Transistor packages are mainly standardized, but the assignment of a transistor's functions to the terminals is not: other transistor types can assign other functions to the .....
Numerical sign problem - In physics, the numerical sign problem refers to the slow statistical convergence of a numerical integration procedure like the Metropolis Monte Carlo algorithm, when applied to .....
List of numerical analysis topics - Numerical linear algebra study of numerical algorithms for linear algebra problems Basic concepts. Types of matrices appearing in numerical analysis:..
'Nanonet' Circuits Closer To Making Flexible Electronics Reality - ScienceDaily (July 28, 2008) — Researchers have overcome a major obstacle in producing transistors from networks of carbon nanotubes, a technology that could make it possible to print circuits on plastic sheets for applications including flexible displays and an electronic skin to cover an entire aircraft to monitor crack formation. See also: Matter & Energy Electronics Nanotechnology Technology Materials Science Engineering Organic Chemistry Reference Nanowire Carbon nanotube Circuit design Metallurgy The so-called 'nanonet' technology - circuits made of numerous carbon nanotubes randomly overlapping in a fishnet-like structure - has been plagued by a critical flaw: The network is contaminated with metallic nanotubes that cause short circuits. The discovery solves this problem by cutting the nanonet into strips, preventing short circuits by breaking the path of metallic nanotubes. 'This is a fundamental advance in how nanotube circuits are made,' said Ashraf Alam, a professor of ele....
Fundamental Flaw In Transistor Noise Theory Discovered - ScienceDaily (May 22, 2009) — Chip manufacturers beware: There's a newfound flaw in our understanding of transistor noise, a phenomenon affecting the electronic on-off switch that makes computer circuits possible. According to the engineers at the National Institute of Standards and Technology (NIST) who discovered the problem, it will soon stand in the way of creating more efficient, lower-powered devices like cell phones and pacemakers unless we solve it. See also: Matter & Energy Electronics Technology Batteries Computers & Math Computer Science Mathematical Modeling Mobile Computing Reference MRAM Integrated circuit Circuit design Nanowire While exploring transistor behavior, the team found evidence that a widely accepted model explaining errors caused by electronic 'noise' in the switches does not fit the facts. A transistor must be made from highly purified materials to function; defects in these materials, like rocks in a stream, can divert the flow of electricity and cause th....
Numerical problems on transistors Questions & Answers
Question : 1- When a transistor is checked out-of-circuit, a very low resistance reading should be obtained between the C and E leads of a good transistor? True or False
2- A tranistor amplifier has an input voltage of 76mV and an output voltage of 2.48 V. The voltage gain is what?
3- In a NPN transistor the majority carriers in the base are holes or free electron or both?
4-In a bipolar junction transistor, collector current is controlled by a-collector voltage b-base current c- collector resistance or..
Answer : 1. False -- it should read very high
2. gain = 2.48 / 0.076 (you can do the division on your calculator)
3. holes -- the base of an NPN is 'P' type, which has holes ('P'ositive charges) as the majority carrier.
4. b. base current -- that's a fundamental characteristic of BJTs
5. b. collector resistance -- when a transistor switch is on it is known to be in saturation. The voltage from the collector to emitter is very low (less than 1/2 volt). It doesn't behave like an amplifier, and the only thing limiting the current flowing through it is the internal collector resistance.
Question : As of now, my problem in studying of transistors and diodes are their different types and exact/actual appearance or even in picture would be a big help, just to know what exactly it is.
I've searched many times before about other types of x'sistors but the problem is, they only give a code for that x'sistor type, even for diodes. I think Electronics technicians and electricians
would be very helpful on my study. Thanks in advance pal!!
Answer : http://www.interq.or.jp/japan/se-inoue/e_parts.htm
Question : Firstly, I do know how to convert Arabic numerals into Roman numerals. Just not in a flowchart form.
The problem is to convert an inputted value of a year ranging from 1000-3000 into Roman numerals. I'm having trouble finding a simple way to go about this without having to make a decision box for each number value and displaying each individual Roman numeral.
A simple answer would be appreciated as I'm still learning flowcharts.
Answer : Basically, your flowchart would consist of a series of decision loops and ifs something like this:
romanNumeral = ''
while (arabicNumeral > 1000)
romanNumeral += 'M'
arabicNumeral -= 1000
if (arabicNumeral > 900)
romanNumeral += 'CM'
arabicNumeral -= 900
if (arabicNumeral > 500)
romanNumeral += 'D'
arabicNumeral -= 500
if (arabicNumeral > 400)
romanNumeral += 'CD'
arabicNumeral -= 400
while (arabicNumeral > 100)
romanNumeral += 'C'
arabicNumeral -= 100