Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [schematics]

The diagram that shows how the parts are hooked up logically. If your question is about a specific schematic software package, use that tag instead.

Required reading:

Additional reading:

1665 questions
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What does the "capacitor into resistance" symbol mean?

I can't understand the circled symbol and didn't manage to google it. It looks like a variable resistance and a capacitor. What does it mean?
Anna
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What is this symbol on this schematic? (two boxes on wire)

Apologies if this is a stupid question - I'm very new to electronics and feeling slightly out of my depth... I've puzzled out most of the rest of this schematic, but can't find the circled symbol's meaning anywhere Thanks!
Isaac Woods
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Identify this symbol: two circles overlapping

The attached screenshot is from a schematic in a datasheet. I know that the flat-topped arrow is a diode, but I don't know what the pair of looped circles are. Can anyone help me out? If there's a good online symbol reference, please share the…
blalor
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Schematic notation conventions

I am studying this reference design, and see the following 4 connections (only 1 is circled): At first glance its telling me to use a large trace and/or multiple traces; but I am not sure as there are no notes. What could this possibly mean?
hassan789
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Circuit diagrams use unit prefix symbol as a decimal point

I've seen some circuit diagrams on-line that appear to use the units prefix symbol as the decimal point. So a 6.8kΩ resistor is shown as 6k8 and a 1.2nF capacitor is shown as 1n2. Is this an accepted practice, and am I interpreting the values…
Annette Gates
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2 answers

What does this symbol mean on a schematic (like an audio jack with a zigzag line inside)?

Symbol in question: The symbol is found in multiple places below: To me it looks like an audio jack (side vide 2d) with a zigzag line in it. I saw this on the schematic of the RAMBo mini (i.e. 3D printer controller). I don't know what it means/…
Ageis
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Schematic critique

I designed my first electronics project and I'd be thankful if you could give me any feedback on it. I'm specially looking for any beginner mistakes, anything wrong or inefficient with my circuit, and on the way I built the schematic. The project is…
André Wagner
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Code based tools for drawing schematics

Are there any code based tools for drawing schematics=? I only need to draw some simple diagrams, including some 16pin microcontroller, wire, power supply, etc. I'd like to use code to specify the pins and components, and let the software do the…
Wei Shi
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5 answers

What does this circuit on a t-shirt do?

A t-shirt with this image showed up as a suggested purchase on one of the popular ecommerce sites. What does this circuit represent? Image source: AliExpress Electrical Engineer What Part of Don't You Understand T Shirt Update: Searching on…
Mark Harrison
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Schematic conventions for different supply rails

I have two ICs in my circuit. They have different supply voltages, 3.3 and 2.7 volts. The voltages are subject to change as we refine the design. I'm trying to come up with labels for these rails. One common convention I see is to use the voltage,…
iter
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Should I include R1 and R2 in the drawing or not?

Is it OK to leave pin 6 and pin 7 (standby/charge) unconnected if I don't plan to use indicator LEDs? I would like to make a low power board.
curiouser
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Identify this symbol: double emitter transistor?

What exactly does this symbol represent, and how is it different from a regular PNP transistor? If it is something more than a basic transistor, how would one model it in a simple circuit simulator? From page 8 of LM78L05 datasheet
rymo
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Is there a mistake in this microcontroller schematic?

I was looking at the eagle schematic for a project and something caught my eye. Take a look at reset button on this schematic (From https://www.arduino.cc/en/uploads/Main/Arduino-Pro-Mini-schematic.pdf): Why is there the VCC right in front of the…
Izzo
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What is this electronics symbol (four triangles?)

The below image is from a service manual for a mobile radio. Note the small symbols that appear to be four triangles, point to point. I've searched far and wide and cannot identify that symbol. I have a nagging feeling that I've seen something like…
Dan
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"To Large Signal GND"?

I am currently looking at this schematic and I'm clueless about the part on pin 5 where the ground on the capacitor should be connected into something that is labeled "To Large Signal GND". What does it mean? (Chip: LA4597)
Ground
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