Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [diagram]

Plan, sketch, drawing, graph or outline designed to demonstrate or explain how something works.

A diagram is a geometric symbolic representation of information according to some visualization technique. Also serve the purpose of clarifying the parts of a whole.

294 questions
28
votes
2 answers

Differences between TVS diode and Zener diodes, in diagrams and in practice?

I have been looking at circuit protection using TVS and Zener diodes. I have seen the following symbols used to represent TVS diodes in circuit diagrams: simulate this circuit – Schematic created using CircuitLab I guess the first question is…
feetwet
  • 2,322
  • 9
  • 31
  • 55
22
votes
3 answers

What does a two overlapping circles symbol mean in an electrical schematic/diagram?

In the datasheet for a A3503 Hall Effect Sensor, I saw a circuit diagram labeled 'Functional Block Diagram', and it shows a symbol I have not seen before. It's shown here between 3 - Output and 2 - Ground. What is this supposed to represent? The…
Ehryk
  • 1,141
  • 5
  • 16
  • 28
21
votes
8 answers

This LM317 diagram doesn't make any sense to me

So this is the basic wiring for an LM317 as a voltage regulator, and very little of it makes sense to me. First off, if one pin is for my adjustment, why do I need \$R_1\$? \$R_2\$ will give me just about any value I need to send. Is \$R_1\$ really…
Jared Cravens
  • 617
  • 2
  • 5
  • 12
18
votes
3 answers

Use of ground symbols in circuit diagrams

In this question is the following diagram for a voltage booster intended for small battery powered devices The TPS61200 spec says GND is control/logic ground and PGND is power ground but this isn't reflected in the symbols chosen in the diagram.…
RedGrittyBrick
  • 14,602
  • 5
  • 37
  • 77
18
votes
5 answers

What does "Piggy" mean in this Schematic?

What does the word "Piggy" mean in this schematic diagram? I found some sections of a schematic where a part is denoted as "Piggy". What does it mean?
Rajeesh Rarankurissi
  • 311
  • 2
  • 7
16
votes
3 answers

Program to draw pinouts (and easily visualize pin's multiplexed functions)

Documenting an electronics project is also an important task if it will be used by someone else other than the hardware designer(s). Right now I need to draw a diagram for a breakout board in order to show what functions are available on each pin.…
rasgo
  • 999
  • 2
  • 12
  • 20
14
votes
2 answers

Why is U used for ICs on circuit diagrams?

On circuit diagrams, C stands for Capacitor, R for Resistor, L for inductor (for Lenz) as explained here, but why is U used for ICs on circuit diagrams?
Russell Gallop
  • 243
  • 1
  • 2
  • 6
14
votes
3 answers

V/I uppercase/lowercase convention?

Is there any standard in industry for using uppercase or lowercase for V and I in circuit diagrams? I ask this because my book seems to switch back and forth between the two without any rhyme or reason and I can't figure out any pattern for why it…
Austin
  • 315
  • 4
  • 12
13
votes
1 answer

Wiring diagram for USB-C to USB-A cable?

I make USB cables (USB-A to Mini or Micro primarily), but don't have any experience with USB-C. I would like to create a cable that has a USB-A (2.0) connector on one end, and a USB-C connector on the other (mainly for connecting keyboards to CPUs,…
rockwell
  • 233
  • 2
  • 5
  • 10
12
votes
1 answer

What does this circuit symbol mean? (Circle with horizontal line through it)

I came across the following symbol in a datasheet (functional block diagram on page 8). What does it mean? For future searchers, the symbol is a circle with a horizontal line (diameter) through it. Does it just indicate that the current through…
David
  • 1,023
  • 3
  • 12
  • 24
9
votes
2 answers

Trying to understand how a guitar pickup switch works

At the risk of being off topic, I need to ask a guitar electrical question. I am trying to replace an old guitar's pickups (including the pickup switch). The idea is to put two active humbuckers. All the diagrams (that you will see below) talk…
Martin Marconcini
  • 193
  • 6
9
votes
6 answers

Why is the capacitor short-circuited in this example?

Please forgive me if anything wrong in my question. I am a school student. I have following circuit diagram: simulate this circuit – Schematic created using CircuitLab There are three capacitors with equal capacitance \$C\$. As they are in series…
krupal
  • 93
  • 1
  • 1
  • 6
8
votes
4 answers

Block diagrams can be different and still works for the same system?

I am an telecommunications engineer who is working now as a programmer. At university we took a class on digital filters, Laplace transformation and working in the frequency and time domain. At the time, no one told us what is the practicals that we…
alim1990
  • 201
  • 2
  • 9
8
votes
5 answers

Which way to draw diode in a circuit diagram

Im having a bit of trouble drawing a circuit with a diode in. I know the current flows from negative to positive, but convention says that current goes from positive to negative. When drawing a circuit with a diode do you draw the arrow pointing to…
Jonathan.
  • 457
  • 3
  • 5
  • 11
8
votes
1 answer

How do I design a clocked synchronous state machine for a combinational lock?

I need help in completing a task, I’m stuck on quite a few things. Since I’m very new to this topic on finite machines. I’ve attempted the state diagram, state table, transition table, K-map values and the k-maps (Karnaugh - map) themselves.…
Omuse
  • 237
  • 2
  • 10
1
2 3
…
19 20