Questions tagged [design]

The process of creating electronic products, including components and end-user devices.

Filter by
Sorted by
Tagged with
0
votes
1answer
55 views

Questions regarding design problem

My instructor in electrical circuits has given me the following creative problem: Construct a communication chain, that follows the drawing below: The input is an AM signal, \$V_{send}=...
1
vote
0answers
72 views

Produce a clock out (5 MHz) with a counter and a clock in (50 MHz)

I'm trying to solve previous years' tests in logic design and there's this question that I can't really solve.. So, it gives me an 8-bit counter and a clock in (clk_in) of 50 MHz and it asks to ...
0
votes
0answers
37 views

Transformer operating frequency clarification

I'm trying to design a small audio transformer. Specs are as follows: ...
0
votes
0answers
44 views

Output filter (pi filter) EAGLE design

I am working on a project of wireless power transfer system for EVs. On the secondary side there is a full-wave rectifier which output current charges the battery. Of course, after the rectifier stage ...
2
votes
4answers
120 views

How do I translate product requirements into components, schematics, and programming?

I graduated with a degree in electrical engineering, but a) I've been doing mostly project management since, b) I didn't get my ADHD diagnosed until after I graduated, and c) I feel like inappropriate ...
-1
votes
0answers
67 views

How to add a 4g / 5g feature on a single board computer design with a cheap price?

Let's assume, I am planning do design my own single board computer just as a hobby regardless of whether it is wise or not. Searching online has made me so confused. In general, I see two options: ...
1
vote
2answers
91 views

Equivalent circuit of a transformer

In equivalent circuit of a transformer, there are two inductances, \$L_p\$ and \$L_s\$. These are called Leakage inductances, as the name suggests due to the leakage flux from both the coils. 1) Are ...
0
votes
1answer
81 views

Two stage op-amp design with compensation ideas

I am trying to design an op-amp with a high-pass feedback. The diagram is shown below. The high pass feedback has a corner frequency at 1Hz. The op-amp itself is two stage as can be seen below. ...
0
votes
2answers
52 views

Detect a sequence inside a bit stream

I was recently in a discussion with my professor in which he told me that 'absolutely in no way would this design work'. I am hoping I could bounce it off you guys. The question asked to design (in ...
5
votes
1answer
107 views

Input & output resistance in voltage amplifier design

I'm currenly taking a course in Analog Circuits in the university and we got a task that requires us to design an amplifier, with characteristics that depend on our ID numbers. My amp should be a ...
1
vote
1answer
79 views

Is it a good practice to put multiple capacitors in series to obtain higher voltage rating in medium voltage system?

I am building a DC link for an IGBT based inverter. The input is provided from a 400V 3 phase AC source. I couldn't find capacitor rated greater than 450V in my nearest stores. I'm thinking of ...
1
vote
1answer
143 views

Control several binary outputs with raspberry pi, CD74HC273 D-type flip flops and 5v relays

I am using a system with a raspberry pi and multiple d-type flip flop (CD74HC273), its role is to be able to control several digital outputs with a web app. I use 8 raspbery GPIO bits as data/input ...
1
vote
2answers
165 views

Copper Coil and Electromagnetic Induction

Waiting for answer Does mixing thickness of wires affect the Induction? What I mean is that I've like some 2mm and 1mm copper wires joined together. Basically I remove insulation on copper wire ends ...
0
votes
1answer
51 views

Processor-in-the-loop for the design of a diagnosis system

I'm studying the development and implementation of a diagnosis system. I would like to understand what is the processor-in-the-loop, but there isn't any Wikipedia page (while there are for hardware-in-...
0
votes
1answer
67 views

Can the 1D wave equation be recreated in a conductive wire?

I am ignorant of EE, but not the wave equation, so bear with me. The (scalar) wave equation \$d_{tt} - c^2d_{xx} = 0\$ describes the displacement (and velocity) of some medium through space and time....
0
votes
0answers
21 views

Designing waveguide based structure using cst

I am going to start designing waveguide based circulator , hybrid and loads using cst or ansys workbench. I am quite familiar with the design of microstripline and stripline based systems using ADS. ...
0
votes
1answer
45 views

BLDC motor design, physical appearance question

Excuse me if this is a dumb question, but I always wondered why are BLDC motors usually quite short in comparison to their diameter? Is it due to some electrical properties that make this design the ...
0
votes
0answers
39 views

Wide Common-Mode Input Range OTA Design

I'm trying to design a 2-stage OTA in a 0.35µm CMOS technology process for one of my analog electronics course projects. I need to design my OTA while following some specs and one of them is common-...
0
votes
0answers
29 views

Master Control Unit Design

I am designing MCU Board with four layers stackup 1. signal. 2. GND. 3. PWR. 4. Signal This board will supply six Radar sensors each with (12V and 4A maximum current), this board have a power ...
0
votes
2answers
67 views

Main aspect of circuit designing process

As a electrical and electronics engineering student I still do not understand what we actually mean by designing a circuit. Are we just trying to shape signals using components or make sure specified ...
0
votes
1answer
55 views

Altium: Export/Package Read-Only PCB or Project

I'm looking to export an altium PCB or full project but would like it to be "read-only" so that whomever I'm sending it to cannot edit it without my knowledge. They're looking to do a more in-depth ...
2
votes
2answers
86 views

Humidity sensor connection “HIH-4000”

Why do we need a load resistor connected between the output pin and ground? reference to a detailed description of the sensor
0
votes
1answer
83 views

Removing silkscreen paint which overlaps copper padding after printing

I am new to advanced PCB printing and, as it turns out, my PCB printing vendor prints the silkscreen white text over some copper padding according to my design, which i don't know that would happen. ...
1
vote
1answer
30 views

Combinational System Theoretical Question

I'm currently taking an MIT-OCW course, where it says that a system built from smaller combinational systems following the following compositional rules is combinational: Each component of the system ...
0
votes
0answers
15 views

Finding duplicate reference designators in Design Entry HDL Schematic

This is related to Allegro Design entry HDL schematic. we have imported few pages from other design to current design and Integrated to current design. Because of that we saw few reference ...
0
votes
0answers
67 views

How can I calculate the maximum current flow in a trace on 10 Layer PCB?

I need to create a 10 layer board and I am using Saturn PCB design tool (because it use the new standard IPC 2152) to find the correct conductor width (I need a conductor current of 50A) and I can use ...
3
votes
1answer
44 views

Chaser circuit with a chain of 4017's

I have a problem with this chaser circuit. It should work like this: When I switch on the power, no outputs should be activated. When I press the reset button, the clock signal will be started and ...
0
votes
1answer
30 views

Avoiding collisions with SMD components in Altium

I am trying to make a circular PCB board with 50 parallel lines of 4 LEDs in series and I am getting collisions errors on some parts on my board. This is my first altium project so I am not sure how ...
1
vote
2answers
72 views

What the difference between a buck-boost converter and buck-boost controller?

I was looking for some buck boost power management IC for my circuit i have noticed that in Texas instruments website the buck - boost is categorized into 2 category converter and controller googling ...
-4
votes
1answer
55 views

How would I convert from POS to SOP?

Hey guys I need a clear explanation on how I would go about converting from POS to SOP form.
12
votes
4answers
2k views

Why in the world would the tab on a TO-220 package have a connection to anything (but GND, if applicable)?

I know this is in some way a different version of the prior question In i.e. a TO-220 package, why is mounting the (pin connected) tab to case safe? But I am not looking for ideas what to do to mount ...
0
votes
4answers
116 views

How to choose or design a suitable single board computer (SBC)? [closed]

Programmer here, making my first foray into anything hardware-specific. I need to deploy my software on dedicated hardware to around 1000 sites as part of a research project. The hardware is required ...
1
vote
0answers
48 views

IGBT chip metalization

Consider an IGBT chip within a power module. The top surface of the chip is often metalized by aluminum (with approximately 5 microns thickness) to bond some aluminum wires into the chip; I am hazy ...
0
votes
0answers
24 views

What are the most common compounds used today in CMOS IC pn junctions?

Many many moons ago I was using germanium-based transistors but I know we have been able to exponentially speed up switching response times with newer doping compounds. I believe newer IC’s also ...
0
votes
1answer
44 views

FSM modeling when outputs are not simple functions of input and current states

All the two/three process block modeling style(the recommended style) examples for FSM have logic for nextstate that is a function of current state and inputs. The outputs in these examples also take ...
0
votes
2answers
76 views

Colour LEDs construction [closed]

While making colourful LEDs why dont we just coat the LED with a filter to just give out the colour of the light we want , rather than constructing the LED with different combinations of semiconductor ...
1
vote
2answers
81 views

How should I start an electronics project? [closed]

Background I have limited exposure to practical and real-life electronics (particularly in the analog world). I haven't made something all by myself from the ground. So to remedy this, I want to make ...
0
votes
1answer
55 views

Help with Op amp Circuit Design

Given the blue transfer function graph, I want to design a circuit that can replicate the characteristics, preferably using an op amp. This is what I have done: where the red circuit is the red curve ...
0
votes
1answer
74 views

Design of Low Pass Filter

So I have made a low pass filter and plotted the transfer function of it. However, I know I need to also use another opamp to correct the phase shifting/ gain. What design should be best to add on to ...
1
vote
1answer
60 views

Why footprint dimensions are to edges and not centers

Whenever I'm looking at electronic components, I regularly see footprints with this kind of thing: Dimension E seems to me to be somewhat unhelpful; rather than simply reading the centre distance (...
0
votes
1answer
34 views

How to create a plug detect of a 3.5mm audio jack with 2 connection that carry an AC signal

Hello i am creating a circuit that take in a 3.5mm audio jack from a Non-invasive Split Core Current Transformer AC current sensor and according to its datasheet the: ...
0
votes
1answer
120 views

Help me choose the communication protocols that I need

I am developing an industrial sensor using a sensor IC and an ARM MCU which communicate via I2C. The data size is 3 bytes. Because the environment in which the sensor is located is harsh ( high ...
4
votes
2answers
136 views

Back branches in code

While reading this file on software hazards this slide says: "No Back Branch in the Code" I wonder what does it mean? Normally when we write code in C-language then we don't actually do branching ...
0
votes
0answers
45 views

Quadrax routing on a PCB

When connecting twisted pair wires to a printed circuit board, I hope I am right in thinking that differential pair routing is used on the board in either a stripline or a microstrip configuration to ...
0
votes
1answer
42 views

How to specify a state when the system does not change in an ASM chart

This may be simple or obvious but I have not found any definite solution by googling. I want to include a state in my Algorithmic State Machine chart were nothing changes (no operations on registers) ...
0
votes
1answer
50 views

How to choose the correct fuse in a double paralled battery supply system?

Suppose I have the following system: simulate this circuit – Schematic created using CircuitLab As you can see we have: Two 500V battery with an estimated 500mohm average internal resistance. ...
0
votes
1answer
48 views

sanity check, current distribution

This is a really basic question I know, I am just doubting myself for some reason. I am trying to make a power distribution board. I have a 12v power supply rated to 20A. If I arrange my DC Jacks in ...
5
votes
2answers
259 views

Hole partially through PCB

I'm trying to make a hole partially through a PCB in Eagle to allow a reverse mount led to shine through to the other side. I got this idea when I saw a torch shine through a pcb where there was no ...
2
votes
1answer
63 views

Help needed to select proper electric motor for constant drive

I need about 180 degree movement, back and forth in about one second. Maximum torque is about 2.2 kg ⋅ cm. I have tried RC-servos (up to 20 kg ⋅ cm), but they all burn within first 12h (maximum drive ...
7
votes
5answers
239 views

Way to determine order of cards plugged into controller board

REVISED: I have a master controller PCB with four bus bars (+, -, and two signal lines), see image below. I have module PCBs A-C (or could be 10 or 15 of them), each with MCUs and unique identifiers, ...

1 2 3 4 5 20