electrical engineering

Hi everyone! I saw this amplifier in another thread on this site and decided to build it to drive power to a very simple DC motor modeled by a resistor and inductor in series. I get roughly 9.6V at the output node which after some research is enough to power a simple dc motor. I'm a second year...

Hey loyal forum members! This is Dale Wilson, Director of Engineering and Content for All About Circuits and EETech. Every year we publish a survey to take the pulse of the electronics industry. This year, we have shortened the survey AND increased the number of gift card prizes (and total...

I purchased a 2 sets of hoists that each have a wired and unwired remote. I would like to operate both machines with 1 wired remote and 1 unwired remote by wiring two motors in parallel using a 4 pin wire splitter. The motors operate on a maximum of 10 Amps, I believe the contractors, motor, and...

so I decorated my home with these types of light(image for reference only) before i went out. When i came back home it was already dark and the light was plugged in the socket but the switch was still off. But I saw it was glowing little, there was a small current in the wires of these light...

Good evening, I'm just getting started with some Keysight equipment (specifically EL34143A DC Electronic Load). I've recently been messing around with BenchVue to do some tests for DC power supplies and batteries, and can't find too much technical detail on the website or any other areas. I'm...

Hello everybody :) I am trying to read the values from a direct drive linear motor's (SDLM-025-095-01-05) inbuilt encoder using a NUCLEO-F446RE board. It is a straight forward task, but I am slightly confused with the cables. ( datasheet ) Overall, the motor itself has 10 cables (as seen in...

Hi, I was working on a thesis project on a portable ECG device, I checked these CIRCUIT: https://raw.githubusercontent.com/gaodingpan/ECG-on-Teensy/master/CSE_EE%20474%20Lab%206_%20Analog%20Front%20End%20for%20an%20Electrocardiograph.jpg VIDEO...

Hi All,, Can i daisy chain two controllers so that it can be operated at two different locations (Won't be used at the same time). I need to bring in controller located outside back in the mechanical space area. Anything special i need to look at? TIA (Edited): It's an industrial air...

Hello good friends. Im curious in a strait way about dielectric absorption. Particularly the current. Where does the current come from? (If i were to elaborate, i would say people familiar with a capacitor that has been shorted for long (hours/days) durations will notice that upon disconnecting...

Here, I want to use Thevenin with those 2 resistors in the base. How can I combine those two resistors with thevenin or do you have any other better idea to combine them? (circled with red in the picture) (PS: I don't ask the solution of the question. I'm only asking individually the...

Hi, I just have solved one of the bjt common emitter question below. However, I'm curious that how can I additionally find those things below: 1) Input and Output Impedance 2) AC Gain Here is the example and my hand draw solution. However, the question only asked to find Vout/Vin... Also, my...

Draw the dc output voltage and voltage across T3 in a Graetz Circuit when firing angle is 45 degree and u=30 degree.

While I was converting this with the inverse phasor transform, I wanna ask a question P{ -4 cos(200t – 45°)} Should I say -4∠-45 or 4∠-45 ? I mean, do I have to preserve the negativity of the magnitude which is "4"? As far as I have known that the magnitude is not a vectorial thing and then...

The was an equation given like that: v(t) = 5cos(1256t-pi/4) Then I wanted to draw this graph below: Do I need to scroll the chart left or right? (In the cosine graph, I shifted it to the left side) Also I want to ask that, I have been always encountered with sine function graph drawings...

Here is the i (graph a) and i^2 graph (graph b) for the RMS calculation: My question is while calculating RMS value, should I decide to determine the period by looking a) or b) graph? Because, while I'm looking for the a. graph (shown above), I guessed the period is 2pi However, if I would...

Hello, there is a subject I need to research, but unfortunately I could not find a detailed source. I would be very grateful if you could guide me to investigate. So I can go on and read it myself. Thank you very much in advance, best regards ... The calculations of Conductor volume ( Conductor...

Actually I have been thinking this question since 1 week inside my head. As far as I know that those functions are coming from "Euler's Equation" but I still concerned that what such kind of real life things are making cos and sin functions are so important for us? I just know that those...

Hello, I am developing my degree work on the coordination of hydraulic and thermal units in an energy network and I was wondering if there is any test network with which I can evaluate or compare the results obtained with my work. Thank you very much in advance

Hello everyone, How can we calculate the voltage rating of an SMD ceramic capacitor. Is it dependent on the package size?.

Hello All, I am a young professional electrical engineer who has just started working in Automation field. We build customized panels including PLCs, HMIs, Pushbuttons, Lights, Relays etc., I have been searching for a reference codes and standards that can be helpful for designing and wiring...