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3
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2answers
74 views

How to calculate currents and voltages with transistors circuit

I'm reading the Art of electronics and trying to calculate current and voltages of the following scheme: simulate this circuit – Schematic created using CircuitLab I wrote the current as ...
1
vote
1answer
81 views

Mesh analysis in BJT circuits

Is it possible to use mesh analysis in BJT circuits? I tried to do it, but it does not work. EDIT: the exercise in which the mesh analysis does not work is the following (the correct value of ...
-1
votes
0answers
40 views

Current mirror: BJT model

what kind of model I could use for BJT to solve a current mirror circuit? For example (\$h_{FE}=100\$): Thank you for your time.
-1
votes
0answers
31 views

Branches in circuit with three-terminal devices

how could I find the number of branches in a circuit which contains three-terminal devices? For example: Thank you very much.
0
votes
0answers
42 views

My nMOSFET (maybe non existent). N canal with Vgs=0?

if I realize the following nMOSFET: is it possible to obtain n canal with \$V_{GS}=0\$? Thank you for your time.
1
vote
2answers
581 views

Can I use Minecraft redstone to teach digital circuits? [closed]

I'm sorry if this question is off-topic. If it is, I would be thankful to know at which StackExchange site I should ask this question. Let me say first, I never played Minecraft myself. But I heard ...
2
votes
2answers
46 views

Negative base current in NPN BJT

What happens if the base current goes out of the base of an NPN BJT?
0
votes
1answer
42 views

Negative beta forced in saturation region of BJT?

is it possible to have a negative value of beta forced in the saturation region of a BJT when \$V_{CE}<0\$? Thank you very much.
0
votes
3answers
53 views

Saturation on characteristic curves of BJT

how come there is saturation region when \$V_{CE}<0.3 V\$? I know that: $$V_{CE}=V_{BE}-V_{BC}$$ thus I can decrease \$V_{CE}\$ also decreasing \$V_{BE}\$. In this case, when \$V_{BE}<0.7 V\...
0
votes
2answers
39 views

Forward biasing of EBJ of npn BJT

I apologize for the stupid question, but I am a beginner in the analysis of BJT circuits. The Emitter-Base Junction of a npn BJT is forwand biased if the emitter current is positive? Thank you for ...
-1
votes
1answer
69 views

Principle of causality and Laplace's domain [closed]

what are the conditions in the Laplace's domain which ensure the causality of a system? I would be grateful if you recommend me also references. My professor said that the degree of the denominator ...
1
vote
2answers
52 views

Difference between dynamic resistance of diode and resistance of PWL model of diode

What is the difference between dynamic resistance \$r_{d}\$ of a diode and resistance \$R_{D}\$ of piecewise linear model of a diode? The book "Microelectronic Circuits - Analysis and Design - ...
5
votes
1answer
545 views

RLC filter as amplifier?

is it possible that a RLC filter works as an amplifier? If it works at resonant frequency, then the output will be greater than the input. Thank for your time.
1
vote
2answers
43 views

Possibility of poles with positive real part in RLC filter

are there the poles with positive real part in any function mode of the RLC filter? The equation to determine the poles is the following: $$RLCs^2+Ls+R=0$$ $$s_{1,2}=\frac{-L\pm \sqrt {L^2-4R^2LC}...
0
votes
2answers
55 views

Difference between cutoff frequency and break frequency

what is the difference between cutoff frequency and break frequency? Maybe the first refers to the attenuation of the frequency response module of a \$\frac{1}{\sqrt2}\$ factor compared to the maximum ...
0
votes
1answer
50 views

Analytic solution of a Graetz bridge rectifier with inductive filter

how could I solve the following circuit? In particular I would find the analytic expression of current on inductor. I tried to solve the differential equation (hps: S1 and S4 on): $$L \cdot \frac{...
1
vote
2answers
73 views

What's the difference between the terms Electronics and Electrical? [duplicate]

So can anybody tell about what's the difference between the terms Electronics and Electrical ? How do we differentiate them from one another?
5
votes
1answer
178 views

CMOS transistors for educational purposes

I am currently teaching my daughters Digital Electronics, ages 9 and 12. In doing so, I wanted to introduce them to CMOS logic, since I feel that a hands-on approach is always better than just doing ...
3
votes
3answers
84 views

Groovy i2C/SPI peripherals for education?

I'm helping someone teach an embedded programming course at my university, and he's starting to cover i2C in class. SPI is next. We're trying to come up with a groovy, easy-to-interface, low-cost i2C/...
0
votes
3answers
208 views

Back EMF of an inductor in a DC circuit?

Will an inductor in a DC circuit act as a voltage source and oppose the applied current creating the magnetic field? Or is it because of the steady state direct current there is no change in I there ...
0
votes
3answers
427 views

Autodesk Autocad for PCB design

I recently completed an Advanced Diploma level course subject for PCB design that taught Autocad as the design software. Whilst I am aware of the power of Autocad my subsequent surveying of ...
0
votes
2answers
97 views

FETs transfer characteristics in 4 quadrants

Recently I was given a following problem on the test: Usually, transfer characteristic (Id(Vgs)@Vds) of JFET and MOSFET is plotted in the 2 quadrants. Plot it in all 4. After the test we were ...
-1
votes
1answer
47 views

Analog modulation trainer

i am making communication trainer as my FYP i am confused on analog communication module .. I have 2 options first one to make different blocks of analog like mixers, filters , amplifiers ,phase ...
-2
votes
2answers
153 views

Are students required to take Linear Algebra in BS engineering programs? [closed]

Is Linear Algebra required in BS engineering programs in the states?
0
votes
2answers
306 views

What are some good representative transistors for a beginner's electronics class? [closed]

Context: assembling coursework for a beginning electronics class. There are various kinds of transistors commonly used in electronics circuits. What kinds of transistors would be useful to include ...
2
votes
2answers
414 views

Electrical engineering vs. Computer engineering vs. Computer science [closed]

I have listed myself as an electrical engineering major, because I like building small electronics projects and physics. When I ask people the difference between Electrical engineering vs. Computer ...
2
votes
6answers
2k views

Ziplock Bags: OK for electronics project storage?

Are plastic "ZipLock" bags OK for short-term storage of projects? Context: beginner's Arduino class, carrying Arduino, breadboard, and wiring.
-2
votes
3answers
2k views

Why do we still take digital logic? [closed]

I am a student in Computer Engineering, and I am wondering why programs still teach digital logic. We have already taken a computer organization class in which we learn about computer architecture ...
1
vote
3answers
867 views

Circuit analysis with nodal analysis

[EDIT] I'm going to give mesh analysis another go, and see where that gets me. [DOUBLE EDIT] Mesh analysis didn't get me anywhere :( Im tearing my hair out over this problem, so any help would be ...
2
votes
1answer
497 views

General Electronics vs. Embedded programming oriented program [closed]

I've got a choice between two types of Electronic Engineering degrees, as the title says. One goes the general route, basics of electricity, analog electronic, digital electronic, measuring stuff, ...
2
votes
1answer
337 views

Electrical Engineering vs Computer Engineering? [closed]

I am trying to decide whether to major in EE or CE. To my knowledge, computer engineering has the same core focus as electrical engineering but with an emphasis on digital logic and microprocessors. ...
-4
votes
2answers
578 views

Struggling to get started with electronic devices and circuits [closed]

A pass in electronic devices and circuits is mandatory in order to clear the first semester of my computer science engineering degree. The recommended text for studying is Electronic Devices And ...
0
votes
2answers
146 views

A book that talks of how computer hardware is designed

There are many books aboout what CPU's pipelines do and etc., but I am unable to find a book that talks of how computer hardware is designed - technical stuff, like electrical engineering stuff. Can ...
-3
votes
3answers
208 views

What is learnt in electrical engineering undergraduate courses? [closed]

Can anyone provide me some example link that points what is studied in electrical engineering major at undergraduate level? Also, how is graduate one different from undergraduate one? Note: I'm ...
2
votes
2answers
704 views

Synthesize VHDL into discrete TTL integrated circuits

I've got a small project in VHDL (fully working in a Xilinx FPGA) and I would like to implement it using an old-school printed circuit board and discrete TTL integrated circuits, in the spirit of ...
10
votes
6answers
650 views

Classic essays on electrical and general engineering

I tutor English language and literature. I sometimes find that tutees are really keen on engineering, tech and so on, and find analysing the more traditional texts intimidating (I mean Shakespeare and ...
2
votes
0answers
683 views

Striking electronics facts, stories or puzzles [closed]

Say you are at a dinner table with like-minded, curious people, and you want to share your enthusiasm for electronics. How would you entertain your audience? Would it be a Steve Jobs story, a summary ...
0
votes
2answers
768 views

Problems solving strategies of experts in simple DC-circuit problems

There are many papers which study how students in high school and college think, when solving elementary DC-circuit problems. However I don't know any resources where the reasoning of experts is ...
0
votes
1answer
148 views

Electric flow rate (Amper) on the com-port

I have sending data through com-port from PC. Is there a constant rate of flow of electric charge (Ampere) when the com-port is used while sending or not sending data through it? Does the Ampere on ...
2
votes
3answers
271 views

A cheap experiment to demonstrate the relationship between resistivity and heat output

I'm trying to design a cheap experiment that will demonstrate relationship between resistivity and temperature change under current. Optimally I would Find some relatively resistive substance Run ...
0
votes
2answers
200 views

How can I get a broad overview of the world of electronics?

(Feel free to edit the question's title. Wasn't sure of a good one liner for my question) I'm a university student who has found a love for electronics and circuit design. I have a solid knowledge of ...
6
votes
6answers
2k views

Sources for cheap/free electronics for students? [closed]

I've just recently discovered an incredible interest in building my own circuits and my own logic. I'm in a computer architecture class and we're learning how to make ALUs based on a set of ...
4
votes
3answers
2k views

What are some simple and informative beginners projects?

I'm currently in an "Information Technology" program, and this program includes some electronics courses. So, I know a little bit about voltage sources, current sources, resistors, capacitors, ...
6
votes
6answers
483 views

Shifting into an EE Career - with or without Master's first?

I've been working in software for way too long, dislike it for a number of reasons, and would like to shift completely into electronics engineering work. I'd prefer analog, microwave, optoelectronics ...
182
votes
28answers
63k views

Good tools for drawing schematics [closed]

I was going to add a bit of information to my post on a previous day using schematics and some instructions. What programs are being employed for this purpose? I mostly want to see what others are ...
35
votes
30answers
6k views

Electronics Blogs and Podcasts

There are some great blogs out there for programmers (Joel on Software, Paul Graham's Essays, etc.). I would love to know about any similar quality content for electronics. Do you have any great blogs ...