Electronics Definition and 631 Threads

I am a retired engineer that still is interested in physics, mechanics, programming, designing, experimenting, prefering the cases where these disciplines are closely related. I worked my whole life at the same institute in the Netherlands, but over time in different functions. I started with...

TL;DR Summary: Struggling to implement a BJT Mixer, which is part of implementing RADAR transmitting at 600MHz in LTspice. I am attempting to implement RADAR in LTspice. At the moment, I am trying to implement the following three blocks that would make up the transmitter of the RADAR: power...

Hello All: I am reviewing my physics courses and looking into building few physics experiments , to pass time into something useful I will use arduino and raspberry pi Any recommendations on what to read in the field of electronics before setting up experiments Best Regards Hagop

erin is a editor of electronics industry:)

hai im ibolya a CS student who wants to dabble in electronic projects

Looking for a good book on moletronics that is priced reasonably. This is a very niche subject and I doubt many people have gotten into it. It is basically how molecules form to create various electronic components. Any suggestions?

Hello: I lurked for a while and found the topics interesting. I'm a retired electronics technician and the content here is right up my alley. Looking forward to more. Randolph

My early working years were spent in fluid flow instrumentation, venturi tubes, measurement of flow through vortex shedding etc. Eventually ended up in computers and electronics but now retired, and partly in an effort to keep up with my sons who both did science at university I have a renewed...

Hi Friends and Colleagues! It so happened I give classes of electronics in certain local school (which itself is physics-oriented) - as a hobby, once a week, perhaps more than 15 years already. Meanwhile by occupation I'm a meek programmer and years ago I created some programming-puzzles...

Hi everyone here. In 2012 when i was 22 years old , i started an apprenticeship in electronics repair , and worked for my self for almost 5 years . I was repairing switching devices like welders and inverters , easy job by replacing bad components like IGBTs and capacitors. In 2017 i started...

I am a retired Electronics Engineer. BSEE from Iowa State Univ and MSEE from California State Univ-Northridge. Still interested in the physical sciences.

Hi, I know in todays world we have more sophisticated equipment to measure the propagation delay of electronics equipment, but for my own curiosity i want to know how historically the propagation delay was measured for electronics device such as transistor.

Hi My grand daughter is a senior in HS, She even took AP physics and calculus, BUT she never learn simple electrical stuff, like the basic V= I x R. I want suggestion of some good links she can read about very basic electricity/electronics starting with V = I x R. Of cause I know all those...

I am wondering if it is possible to use two electromagnets oscillating at about 1 ghz to suspend an amount of ferrofluid in an acrylic chamber. As I understand it, 1 ghz should be sufficient enough to get the ferrofluid away from each magnet, as after a quick google search, magnetic fields move...

First, I know almost nothing about physics or electronics, but I think this idea has promise. Maybe this post should be in "Engineering"? Is there a Cell, or Entity, or Really Tiny Bubble, maybe even Electronic, sorta' like... your LED computer screen is made up of millions of Pixels. Those...

TL;DR Summary: Which path would be best. Physics or mechanical for electrical engineering. My uni doesn’t offer electrical engineering but offers electronics engineering. Looking for advice from anyone in industry or similar. I’m on an open STEM degree and I’m following the electronics...

I have no BG in electronics beyond tinkering. I'm strictly a hobbyist of a certain age, retired, hoping that I can die a natural death far in the future. To that end, I have put together an isolation transformer set (two identical transformers linked back-to-back) in order to complete the design...

I am an electronics engineer and work as a designer of automotive LED lights

I am no physicist or student and am asking question in order to out try and understand why my old tractor is not charging. This got me into understanding the concepts of how the generator and voltage regulator work to create a current to charge the battery. My investigations pulled me down in...

I have drawn the I-V characteristic graph of the diode. I am facing problems with drawing the load line. For what value of E (Source Voltage), should I draw the Load Line? To get the I-V graph, I had to continuously change E.

Hello everybody. I have already graduated I am currently in training at work which I am required to finish intensive courses. So I will start when it's completed. My interests are in Signal Processing & RF Electronics which you could tell by the study plan I created. I will be taking a slow...

Hello everyone, I have this circuit and I need to determine the interference voltage. I am not sure, where the interference voltage is applied and how to determine it. I think the interference voltage is uv nad my equivalent circuit looks like this: Am I in heading into the right direction...

Hi everybody, I don't have M700 grade silicon/electrical steel data to add to Maxwell Electronics 2D Material Library. How/Where can I find this data? Could you help me? Thanks, Oguzhan Gonc

Hi, Both NAND and NOR are considered to be universal gates. For example, NAND gates can be used in combination to perform the AND, OR, and inverter operations. The same could be said of NOR gate. Then, why the digital electronics section of electronics textbooks almost always start with the...

crystal frequency is 4MHz The code i have tried is: #include <p18cxxx.h> #include <xc.h> void main(void) { TRISC = 0; // making TRISC pins output ADCON1 = 0x07; // making them digital pins while(1) { RC0 = 1; __delay_ms(5000); RC0 = 0...

The image i provided is a section of microcontroller circuit that i used to interface code in C with the I/O port of the microcontroller, in Proteus. I have realized i was only ever told to learn how to measure the voltage and current across the components, Kirchhoff's rules and all, and...

It's not a homework. I came up with this problem myself. Trying to understand fundamentals of electronics. Do you know how to solve it? Is voltage somehow related to electron energy levels? What knowledge should I gain to be able to solve problems like that? Thank you! If we ground the cathode...

Hey I'm Fraser, I am a Strathclyde university graduate with a master's in electrical and mechanical engineering. I am interested in furthering my knowledge on quantum entanglement in relation to general dynamics. I am interested in researching its capabilities in ICBs. I hope I can find...

What I understand is that the β parameter of the npn transistor is temperature dependent. Increasing the temperature increases the collector current and hence the LED turns ON. But I don't understand the resistor arrangement.Also I can see that the diode is keeping the Base-Emitter junction in...

Is there any way to measure the capacitance of a capacitor indirectly using a multimeter that does not have the option to measure capacitance directly?

So pretty confident I understand part (a) however for part (b) I'm not sure if I have carried it out correctly if someone could give me a pointer? (b) 5dBmV Input as a voltage: 5=20Log(V/1mV) V=105/10 V=1.77827941mV Then the noise level is 20dbμV so changing to a voltage: 20=20*Log(V/1μV)...

I recently got these electrical experiment boards to do some experiments but I am new to doing experiments with such boards. Can someone help? Thanks in advance https://ibb.co/zXTbNby https://ibb.co/tDjKrV0 https://ibb.co/JdCTgqY https://ibb.co/DDkGjbp

I use a 2 Relay Motor module to control Direction on a motor (linear actuator). When Relay A is active, actuator retracts. When Relay B is active, actuator extents and Led Module is activated. After some repetitions Led module fail. Cause of the fail? I believe Surge voltage, although i am not...

What is this white stuff in the ants colony inside electronics? Is it sugar? nest? I presume the ants were attracted to the warmth of the pcb? It's a Morley addressable smoke detector Separate question. I saw illustrations of a smoke detector with light catcher. But the Morley doesn't...

I know what Boolean algebra and logic gates are, but I am having a hard time to describe how washing machines operate on digital electronics. Here's my attempt 'Washing machine have various functions like different cycle settings for various temperatures or cycle duration, or a delayed start...

In our fourth semester academic curriculum, we have a paper on Analog Electronics. (For those who don't know: I am studying UG physics major.) I have found some good lectures online that cover a part of the course, but I don't have any material for the rest of the topics. The following topics...

[New poster has been reminded by the Mentors to show their work on schoolwork problems] I have tried many times to solve this problem, but can't understand how to get the value of Im and hence cannot find the Peak & other values of the load current. Please help me to solve...

I've attached my attempts at the solution and the actual question below. I believe the only issue I am having is I don't know how to get rid of "I" in both my final inductor and capacitor equations as the HW states I shouldn't have anything in term of I. I believe I need to put "I" in terms of...

Hello everyone,i would be greatful if someone could take the time to answer the following questions for me : -First is,does it worth getting a physics degree after completing an EE degree ? Or would be better to just do a masters/PhD in physics? -Could you suggest courses an EE could take that...

Hi folks, I'm looking for a solid introductory book on electronics and circuit analysis. I have seen The Art of Electronics highly recommended. I will likely get it but as a supplement. Does anyone know of any other good electronics textbooks? I don't mind old textbooks. Some of the newer...

Hi experts, I am a student of electronics engineering and a new member. I have few questions related to Oscilloscope, function generator and Digital Multimeter. 1. what does the DC offset on the function generator do? 2. What is the frequency range and type of signals available? 3. What is the...

Hi! I've done some research on the CAMAC standard of nuclear electronics - "It's like NIM but digital" - as I would like to acquire a bin and some modules for historic and scientific curiosity. I have never worked with the system, and I would like to get in touch with somebody who has. How...

Through my 2 analog classes and 2 electronics classes I have learned about resistors, inductors, capacitors, BJTs, Mosfets, and FETS. What are some other fundamental components that I should be taking a look at? To add to this, I don't consider gates as fundamental because they are built up from...

Summary:: I was wondering if there was a map of electronics engineering much like this does for physics (https://www.youtube.com/watch?v=ZihywtixUYo). I realize that looking at undergrad course outlines should give a decent picture of the field. However I am looking for a more comprehensive...

1. Using the frequency equation I know the time period is 1 millisecond. 2. The duty cycle (50%) equation tells me that the pulse width and the amplitude is 1 V. 3. Thus the input waveform looks like this : (?) 4. As the slew rate is 0.5 volts per microsecond, the output voltage would take...

Here I let ##R_2 = 2 ## kohms and ##R_1 = 1## kohms. Using this suggests that ##R_3 = 0## and ## R_4 = 1 ## kohms (?!) The resulting circuit is Is this the correct way to solve this? PS : I just realized that I have interchanged ##V_1## and ## V_2## in the diagram!

I was looking into measuring the ph levels of a lake nearby where I live. I wanted to tie the experiment to my electronics coursework so I did some reasearch and found the wonder electronic that is the ISFET. Unfortunately, I cannot find anywhere to buy an ISFET transistor; I can easily find...

I'm a relatively new entry into the world of electronics so my understanding of what is possible may not be an accurate one. In a nutshell, I would like to have a DC motor act as a torsional spring with some variable virtual spring constant (k). The motor, or "spring", would act against an...