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Questions tagged [symbol]

An electronic symbol is a pictogram used to represent various electrical and electronic devices

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KiCAD symbols for JST connectors

I'm trying to add JST connectors library to my KiCAD installation. I'm using KiCAD 8. I see that Connector_JST is in the KiCAD footprints and the KiCAD 3D shapes but not in the KiCAD symbols. How come ...
Hubert B's user avatar
1 vote
1 answer
75 views

What is this symbol? I found this on the panel of a circuit breaker setup?

I found this symbol in a wiring diagram on an old distribution panel door. What does that cross line on the wire means? Is it a wire tap on the line? Certainly, the diagram used the sine wave symbol ...
Rohit's user avatar
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5 votes
1 answer
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What is the history and meaning of letters “v” and “e” in expressions +ve and -ve?

Sometimes the longer form "\$15 \; \text {V +ve}\$" is used, instead of the simpler form "\$+15\; \text V\$". And similarly, "\$15 \; \text {V -ve}\$" is sometimes used ...
MarianD's user avatar
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A tag on my Asea motor says 415V-Y 240V-🔺

What does the triangle represent?
Thomas Koorneef's user avatar
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0 answers
18 views

Pinout for Onsemi AR1335 (63-ODCSP/63-WFBGA/CSPBGA)

I am currently working on a project utilizing the Onsemi AR1335 (AR1335CSSC11SMKA0-CP) CMOS Image Sensor, 13 MP, 1/3". I chose this sensor since my MPU/APU platform (NXP i.MX8M P) already offers ...
Sofia Braun's user avatar
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0 answers
23 views

Switch Symbol on a Datasheet Block Diagram [duplicate]

I have seen quite a few times in datasheets this switch symbol (at the red circle on the attached picture) on block diagrams. Do you know what is his formal name and if it isn’t a “simple” switch (...
DarkKnight's user avatar
0 votes
3 answers
52 views

Varicon Capacitor

I'm making a part list to build a AM/FM radio. The schematic was published by Phillips Electronics in 1994 (see https://electronics-diy.com/pdf/TEA5711.pdf). My first question involves a capacitor ...
Don Wilson's user avatar
2 votes
1 answer
105 views

Meaning of this power system line diagram symbol

Please explain to me what this symbol means, in single line diagram? Source of image: My project diagram. Here is another example I found: Here is a magnified part, showing the symbol: Source of ...
Daniel Prieto López's user avatar
1 vote
1 answer
71 views

Transformer Pads not specified

FCT1-50M22SLD Pads 3 and 8 are not specified, or am I incorrect? How would you link the footprint to the symbol, since no models are available for this?
Wes Ellgass's user avatar
5 votes
2 answers
844 views

What does an AND gate inside a box mean?

I'm looking at this clock diagram, and it has five of these little boxes with symbols that look like AND gates inside them. But, they only have one input. What do they mean here? Source here
ultraturbonoob's user avatar
0 votes
3 answers
77 views

One footprint, two configurations - KiCad

I want to make a single PCB that works for two product versions. One of the footprints will have to sport different placements of the same component for the different versions. I want a footprint with ...
Alexander Ohm's user avatar
5 votes
1 answer
632 views

Identifying symbol similar to opamp

What is this symbol and what it does? It looks like the Op-Amp on the left, but I don't get what that half square wave is doing on it. This diagram was obtained from this paper: ...
Ícaro Lorran's user avatar
1 vote
0 answers
97 views

Understand interphone 4+N wiring and arrow symbol

Could anybody help me understand the attached interphone 4+N wiring? specially the arrow symbol crossing a two segments right angle, what it means, what is it connecting? I have an issue with an ...
Rezzonics's user avatar
7 votes
2 answers
2k views

What is this weird split circle symbol in a schematic?

I saw this weird symbol in a schematic and I couldn't find what it means. It was connected from one side to the shield and ground of a USB port. From the other side it was connected to the ground of a ...
Tadeáš Hrudka's user avatar
2 votes
2 answers
183 views

Is there a piezo element in the KiCad libraries?

I have been trying to find a piezo element in the library but it just does not show up (I am using a Mac.) What should I do? If possible, please share a schematic with the piezo element in it so that ...
Anuj Kishan's user avatar
2 votes
2 answers
144 views

Identifying different connector symbols in French circuit diagrams from the 80s

I'm trying to troubleshoot an old analog oscilloscope (Metrix ITT instruments OX 725), which seems to come from the late 1980s in France. There is (part of?) a service manual with circuits diagrams ...
Fii's user avatar
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1 answer
163 views

How to change the order of parameters on a component in schematic

In my symbol library for my capacitor, the capacitance displays before the voltage rating. When I place it on a schematic, the voltage displays first. I want the capacitance to display first. How can ...
Rymazon's user avatar
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1 answer
172 views

What does this symbol in the picture represent in an electrical circuit?

I have been looking at a diagram with this symbol on it. Does this symbol mean a relay or something else? The full wiring diagram is in the second picture for context.
Timothy Scherer's user avatar
0 votes
1 answer
185 views

What is the meaning of this relay symbol?

I am checking the datasheet of a Switch Amplifier (KFD2-SOT3-Ex2, see below), to isolate two parts of the circuit. I suppose the square blocks are relays, but what does the left one with the double ...
Dark Patate's user avatar
1 vote
1 answer
378 views

What is this symbol for?

It looks like a connector, or as the diagram is about a dynamo, a light.
MiNiMe's user avatar
  • 1,609
11 votes
3 answers
1k views

What does a thick MOSFET symbol mean?

I have come across a bag of about 5,000 n-type MOSFETs (2n7000), and I figured the best thing to do with them is to build a 6502. I found a diagram of the nMOS 6502 layout But I am confused as to ...
EvanTheGamer's user avatar
0 votes
1 answer
393 views

Unknown triangle symbol in single line diagram

I have some troubles finding what the triangle symbol on the following diagram could mean. It is not a diode because in other parts of the diagram, it is used where an input is expected. The box is ...
Reallnas's user avatar
1 vote
1 answer
787 views

Rectangle Symbol in Electrical Diagram

I am checking a Nissan forklift wiring diagram and don't know what the rectangles with one and two diagonals are. I would appreciate any idea about this.
Henry's user avatar
  • 113
0 votes
0 answers
712 views

How to add MOV in LTspice

I am using LTspice for my simulation, in that we are using MOVs and common mode coil so we are trying to do simulation for that. How can we do that? And where can I get the models for MOVs and common ...
Ram_R's user avatar
  • 11
12 votes
4 answers
4k views

Why is there a polarized capacitor symbol in an AC circuit?

I am confused. My question is very basic, someone please enlighten me. If polarized capacitors should not be used in reverse polarity then why does every textbook (like the one I am using, Grob's ...
Asim's user avatar
  • 286
0 votes
1 answer
68 views

Color coding in schematic symbol parts

I was looking at library components created for Altium designer from some 3rd part when I found that for FPGAs, there is a vertical bar always present. The colour of this bar always changes for the ...
quantum231's user avatar
8 votes
1 answer
453 views

What's this half-arrow diode symbol on a schematic?

I'm looking at a British schematic from 1960 and the diode symbols all have half-arrowheads. Was this a standard diode symbol or does this indicate something special about the diodes? The symbol looks ...
Ken Shirriff's user avatar
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0 votes
2 answers
468 views

PNP transistor symbols, pins and footprints

I am currently building a soft latch circuit in a CAD editor. I want to use a PNP transistor, and have 2 choices for this component. However, I am confused when comparing the datasheets of the ...
ThomasPaper's user avatar
10 votes
1 answer
2k views

How many "grounds" are there and what is the difference?

I stumbled upon many terms for ground, naturally as newbie I got very confused. ground earth chassis ground earth ground common ground signal ground Are there any more? I assume some are for AC and ...
komrad2236's user avatar
0 votes
3 answers
130 views

Diagram explanation

Can someone explain what the components in this picture are? I recognize the 50 Ω resistors, and are those switches, shielded wires, and amps?!? does the arrow on the switch indicate the direction of ...
The Shikari's user avatar
7 votes
2 answers
1k views

What is the circuit symbol for a triple gang potentiometer?

What is the circuit symbol for a triple gang potentiometer? I've found one possibility for dual gang potentiometers: (Image source: Components101 - Different Types Of Potentiometers And How To Use ...
iwantmyphd's user avatar
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1 answer
2k views

Assigning footprint to symbols in Altium Designer

I'm trying to assign footprint to symbols in Altium, I imported and modified the footprint to my PCB Library and also deleted another footprint so this is the list of footprints I currently have but ...
Bananabread's user avatar
0 votes
0 answers
189 views

Altium: Duplicated instances of sheet symbols to create single PCB room

I'm wondering if the following is possible in Altium: To make my schematic easier to follow, I want to break up my sheet symbols into several different ones in the top level schematic, while not ...
ethan's user avatar
  • 11
0 votes
2 answers
79 views

What does this schematic symbol mean (rectangle with two tails, "0.44 VCC_IO" on the bottom, "0.56 VCC_IO" on top)?

I've highlighted this symbol from page 30 of the TMC2100 datasheet: Based on the context, which says "only rising edges are active", I'm guessing it means that a signal is detected when the ...
Andrew Klaassen's user avatar
1 vote
2 answers
93 views

When creating a PCB symbol, do you have to include every pin of a MCU?

When creating a PCB symbol for schematics, what is the best practice when creating a symbol: Do you include every pin of the MCU for completeness? For example - TMS570LC4357 uses a NFBGA(ZWT) 337 pin ...
Efanatic's user avatar
  • 113
2 votes
1 answer
994 views

Relative path for KiCad custom symbols

I'm trying to make my KiCad projects portable & that requires my custom symbols & footprint I used for these different projects be portable as well. So I'm putting my "my_symbols" &...
Tempus Nomen's user avatar
2 votes
1 answer
388 views

What does this symbol mean?

I'm student trying to make a project, but I don't know what this symbol means. That is full diagram Answer is: the symbol is the electromagnetic gripper
Wiki's user avatar
  • 23
6 votes
2 answers
672 views

What are these short parallel lines around a connection line in a schematic?

I am examining the Analog Devices AD74413R and came across a symbol in the evaluation board schematic I am not familiar with. There are small parallel lines around connection lines in various sections ...
JYelton's user avatar
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8 votes
1 answer
686 views

What is this little red schematic symbol?

In the schematic screenshot below (from example 1 here), there is a little red symbol on some of the lines - e.g., where the big red arrow is pointing: Here’s another online schematic where the same ...
jemalloc's user avatar
  • 720
0 votes
1 answer
201 views

Is there a specific meaning for these arrows in the architecture of a microcontroller?

Yellow mark Green mark Blue mark Do these arrow signs mean something specific? Also, if there are other types, where can I go to read about them? Source : here Edited :
Just doin Gods work's user avatar
6 votes
1 answer
218 views

What electronic component does this symbol represent?

From a schematic of a feed forward converter.
Bilal Ahmed's user avatar
2 votes
1 answer
113 views

What is this symbol

Can you please advice what is the symbol in red in following wiring diagram.
Pavel Hornak's user avatar
5 votes
2 answers
162 views

A strange voltage source symbol with possibly output pin

While checking the block diagram of a chip from its datasheet, I noticed this symbol that I have no idea about (the one marked with red circle): Without that extra connection line to the right it'd ...
Rohat Kılıç's user avatar
0 votes
2 answers
100 views

Identification of this symbol from cable design

What is the line segment symbol that's shown to the right of the circular dashed symbol? I can't seem to find the symbol in any online reference.
geeb.24's user avatar
  • 113
8 votes
1 answer
3k views

What is the triangle symbol with one input and two outputs?

Looking at the Wikipedia page on TMDS (Transition-minimized differential signaling), I see a triangle symbol with one input and two outputs. I believe this sends the serial signal with its negative ...
JD9999's user avatar
  • 215
1 vote
1 answer
178 views

What does this schematic symbol mean (transistor with two emitters)?

Basically the question is, what it is? Are those two emitters (meaning that part of semiconductor heavily doped)?
Qeeet's user avatar
  • 319
0 votes
1 answer
98 views

Strange symbol on circuit diagram [closed]

I am trying to reverse-engineer some circuit diagrams. I have found some symbols on there that I've never seen before. I can't seem to find anything on Google. It looks like two terminal connectors ...
Werner Schoemaker's user avatar
0 votes
3 answers
77 views

PCB8711 Rev. A of Sender 5000 solid-state AM transmitter: schematic symbol

I wonder what the symbol encircled below means, because we're repairing an AM transmitter. I think the real-life version of that schematic looks like this: I really wonder what the symbol encircled ...
Shobeh's user avatar
  • 27
2 votes
0 answers
166 views

Unusual symbol on schematic

What this is symbol? It's in series with a miniature incandescent lamp and I do not recognize it.
LWelder's user avatar
  • 21
1 vote
1 answer
137 views

Meaning of these cuts on an antenna

What's the purpose of these cuts at the end of the antenna? It is some kind of representation of an RF antenna. Here is the Eagle library Edited: Here Git Source Original File
Just doin Gods work's user avatar

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