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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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51 views

NTC PTC thermistor symbol

What is the reasoning behind the arrows on the circuit symbols of NTC (up and down arrow) and PTC (two up arrows)?
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21 views

Error: L6218E: Undefined symbol LCD_X_Config in Keil

I encountered a problem working with the EMWIN package in keil, this error message: ...
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3answers
98 views

Multiple different grounds in one diagram

Assume I have multiple electronic circuits and I need to display them working together. Each of them has a common ground symbol. However, the different grounds of the different circuits are not ...
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2answers
115 views

Is this symbol another version of a ferrite bead symbol?

I saw this symbol in the schematic of the ADPD2140z eval board. From what Ive seen online, ferrite bead symbols are usually slanted rectangles with right angled corners. This is slightly different, ...
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1answer
93 views

unknown circuit symbol rectangle with arrow

I've never seen this symbol before but my wiring diagram is full of it. I also have searched for lists of symbols but it isn't among them. Does anybody know what is is? It is from my wiring diagram of ...
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2answers
48 views

Altium pin parameters in symbols

thanks for the many great questions and answers over the years. This is my first question. I use Altium Designer for capturing designs. I had an idea to make my processor components a little more ...
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91 views

Female symbol on PCB silkscreen?

You can see the symbol on the upper right hand side of the board, what appears to be a pictogram of a woman wearing a dress, similar to a bathroom sign (?) Wondering what this is.
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3answers
1k views

What are the use cases for a closed solder jumper on a PCB?

I've come across the the symbols for closed solder jumpers in design libraries, and now I came across one in a design. I get why you might include an open jumper that could be solder closed, but what ...
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1answer
62 views

what is the German/Austrian nomenclature(Voltage and current direction) in electronic circuit?

AS I came from a country where we use the french system in defining the voltage current arrows in electronic circuit, I am confused about the German/Austrian system where I see the voltage arrow is ...
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2answers
102 views

KiCAD symbol editor - how to use insert key to duplicate pins with every other number

I'm trying to make this header row in KiCAD. If I place pin 1, and press the insert key, it gets duplicated nicely. The problem is, that pin becomes pin 2, then the next pin 3. I want pin 1,3,5,7,9 ...
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2answers
247 views

Fusible resistor

I'm currently working on an assessment for the electronics part of my PEO and have to complete a resistor report, detailing different types of resistor and their circuit symbols. I have managed to ...
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6answers
2k views

How can I tell if a MOSFET is enhancement-mode or depletion-mode?

Today, from ignorance I have fallen head-first into the world of MOSFET transistors. In my scramble to find some information on the MOSFET I will be using as a switch (HEXFET actually), I learned that ...
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1answer
66 views

What does this transformer symbol mean

In a balun I have, (model 50-7725 from CPC, datasheet -> http://www.farnell.com/datasheets/2365902.pdf?_ga=2.142463986.1590159842.1535980880-667311346.1535980880) It shows the Balun as: What is the ...
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1answer
439 views

What does the x mean on MCB?

Any clue? Or is it just there for better visual?
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1answer
1k views

What is the meaning of the “lasso loop” on circuit diagram?

I've never seen this "loop" structure in a circuit diagram before. Pin 6 has a line that loops around the lines from pins 5 and 9. Pin 7 has a line that loops around all other lines, except the ?...
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1answer
1k views

Symbols: Double-arrow circle enclosed “10” on electronic appliances

What does the symbol that says 10 inside the double arrowed circle mean? I have seen a similar symbol on another appliance that had the number 25
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0answers
44 views

Help with RGBS schematic

I am making up a cable for the below diagram, but am slightly confused about the shielding. Does this mean that the red (earth) should shield the yellow, white (earth) shield the orange, etc? Does ...
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1answer
222 views

What does this symbol in a schematic diagram mean? (wire through circle)

I am looking at the data sheet for the iC-NZN N-type laser diode driver. What does the marked symbol stand for? It appears in a number of places, always marking IO pins. My guess would have been ...
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1answer
157 views

Having Trouble Identifying Crystal Oscillator Symbol

I'm working on a circuit implementing the TI CC2640R2F (Datasheet) which requires an external 24MHz crystal oscillator to function. In the schematic (pg. 42), it shows what looks like a normal ...
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1answer
78 views

What does this “Not Installed” symbol mean on the data sheet?

I am designing a circuit that uses the TI TPS561201 buck converter. Reading the data sheet, I am slightly confused with the notation of "Not Installed" next to some of the components. Questions: ...
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2answers
115 views

SENT protocol output unit is LSB. What does this mean?

I have read couple of datasheet of devices which uses SENT protocol. They define the output between 193 and 3896. The unit is LSB. I think that this does not mean least significant bit? Example: ...
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1answer
331 views

Symbol for ideal voltage source vs symbol for real voltage source

Wikipedia's article on Voltage source shows the figure below. It says in the figure that the following symbols is an ideal voltage source. However, elsewhere in the same article they have a circuit ...
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1answer
172 views

What is this triangle symbol representing?

I am getting started with electronics and decided to learn about the inner workings of the L293D. However, I found a symbol I don't recognize, which is the triangle with 3 connections. There are four ...
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2answers
158 views

What are these “X”s / crosses on this schematic's wiring? Traces attached to the metal housing (ground)?

Below is a section of the schematic for the RF modulator of a Nintendo NES-001 system. I am curious what these Xs are that I've boxed in red below. Looking at my own NES-001 and matching locations, I ...
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3answers
1k views

Where does this current source symbol come from?

There's an old symbol for a current source that's just two overlapping circles, reminiscent of a Venn diagram. There is more than one question on here with people asking what the symbol is, but I'm ...
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1answer
356 views

What do the letters W, Z and G stand for on an extension cord (USA)?

G seems to be obviously (G)round, but I have no idea which of the others is Neutral and which is Hot.
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1answer
152 views

Is there a switch that can replace Voltage Controlled Switches?

This is the voltage controlled switch in the LTspice. Is there a switch which can replace it? I need a switch for a schematic. At first, I used a transmission gate switch, but the simulation of the ...
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0answers
36 views

BJT / MOSFET Symbol Pin Function

When creating a new Transistor schematic symbol (FET or BJT) what is the correct pin type / function for each of the pins? Do most people leave them as passive? Or would you use high-z for gate / base,...
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1answer
87 views

Please, define symbols which are pointed

What do these symbols mean? Please, describe It is a part of high voltage power supply
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0answers
203 views

The pin name of analog switch in virtuoso cadence

This is the analog switch in virtuoso cadence,and i think a or b is input or output,but what is another two pin? For the switch,as i know we must have three pin at list:input,output and control(to ...
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3answers
295 views

Meaning of Ceramic Capacitor markings

I was inspecting a PCB with a magnifying glass and noticed some of the light brown ceramic smd capacitors have 3 digit markings on them. Is there a "standard" of what these markings stand for? The ...
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3answers
2k views

what does this symbol mean?(like a comparator,but there is another symbol in this triangle)

What does the symbol mean?what is this comparator difference?what is its function?can anyone introduce it to me?
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0answers
71 views

What does this key looking symbol (with 4 bars) indicate?

Im currently studying for my NEN3140 exam and I stumbeld acros this image: I have been poking around in google (and all the symbol questions I could find here) and the closest I got is this (page2): ...
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1answer
320 views

What does a P-Channel MOSFET symbol with body connected to source mean?

I was just trying to source a power MOSFET, and I stumbled across a very odd symbol for a P-channel MOSFET. I know that the arrow pointing out means it is P-channel, and I know that the dashed bar ...
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1answer
211 views

LTSpice arbitrary voltage block (bv) simulating full wave bridge rectifier

I'm creating a LTSpice simulation. I need a voltage source that looks like the output of a full wave bridge rectifier. The simulation includes a sine voltage source (voltage block) line to generate ...
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3answers
3k views

What does this symbol (three connected triangles) mean?

What do the symbols \$GD_{SN}\$ and \$GD_{SI}\$ mean? What is the component’s purpose? The second picture shows its schematic.
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4answers
2k views

What is this symbol near an AC motor?

What is this symbol circled in green in the image? Is related to that induction motor, and I guess it is a french project (if that helps).
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0answers
50 views

Unknown symbol in logic diagram [duplicate]

I am trying to make sense of this logic diagram for an ON Semiconductor 7-segment display driver. What is this logic symbol? I have never seen it before, and I have not seen it anywhere online after ...
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0answers
55 views

What is this component FL12?

I am working on a pcb design and found this in a schematic. I have been told it is a snubber but when I look up a snubber it doesn't look anything like that as the symbol. Any explanation would be ...
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3answers
613 views

What does this diode symbol mean?

I found this diagram in the TI TLV431 datasheet. The diode symbol looks like a zener, but has an addition input on the side. What is this supposed to represent?
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2answers
3k views

Diode in MOSFET symbol [duplicate]

Is there any difference between MOSFETs with a diode in their symbol and the HEXFET? Also, is there a difference between MOSFETs with a diode in their symbol and other MOSFETs?
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1answer
443 views

Potentiometer schematic symbol help

I cant figure out which pin is the number 1 on the potentiometer and variable resistors within this schematic. I would guess that the circle with a slash through it is pin one but I'm not sure. Any ...
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1answer
107 views

LM3466 circuit symbols, SEN/SRC to ground?

I'm reading the LM3466 datasheet (page 9) and am confused about the symbol downstream of the SEN/SRC pins and R(sen). Is this a ground symbol? If so, why do they use multiple different ground symbols ...
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1answer
215 views

What does this symbol stand for?

Please tell me what this symbol means:
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5answers
5k views

Anyone recognise this capacitor and its symbol (circle with dot)?

Trying to repair an old Hameg CRT oscilloscope and looking at the schematics for the HV Z board I see the following capacitor symbol (in red box): The capacitor itself looks (vaguely) like this: I'm ...
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1answer
180 views

Altium - Is it possible to move the symbols added to pins when creating components?

I'm drawing a simple inverter and would like to have the Schmidt trigger symbol inside of it. Altium places it outside the boundaries. Can't find how to move & scale it. Suggestions are welcomed!
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1answer
334 views

Is there a standard for schematic power symbols?

I notice that some schematics use a single, labelled, symbol for power that looks like an uppercase letter "T", while others use varying symbols (mostly types of arrow) to indicate various voltages; I ...
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1answer
192 views

What the heck IS this thang? [closed]

Hey you kids! Don't putcher lips on it! Seriously, I do not know what this symbol means. Printed nearby says 14 mA at 10V. Goes to ground from the inverting input of an LM833 op amp. Anyone?
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1answer
224 views

What is this schematic symbol?

I have this schematic here I'm trying to recreate in Kicad. I'm lost on the meaning of part "PH_A, P8".
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2answers
695 views

Is this datasheet wrong?

http://www.mouser.com/ds/2/395/DTA124%20EE%20A12-248319.pdf It says it is a PNP transistor but symbol is of NPN transistor. The equivalent circuit shows the transistor sitting between load and ground ...