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Electrical Engineering

Questions tagged [symbol]

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

409 questions
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3 votes
2 answers
433 views

This is a question about the history of electronic symbols and standards. I'm finally starting to learn how discrete devices actually work from the entertaining yet incredibly insightful and ...
uhoh's user avatar
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0 votes
2 answers
50 views

I am new to Altium. I recently downloaded a symbol from Snapeda. It's given below. You can see that the pin name is not properly aligned with the pin number. I tried to adjust the margin in the name ...
Confused's user avatar
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2 votes
1 answer
182 views

I found this marking on a led power supply, together with the usual class II, WEEE and similar symbols: The only thing I found is the name "auxiliary independent lights", which really doesn'...
Lorenzo Marcantonio's user avatar
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0 answers
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I have 4 different type of an AC surge arrestor, i thought there are only 1 type but it would seems there are several. I would like to hopefully know what are the differences and when and where to use ...
Jake quin's user avatar
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6 votes
3 answers
1k views

Why is there an LED-like symbol here? What does it symbolise? source of picture:https://learn.sparkfun.com/tutorials/how-to-read-a-schematic/schematic-symbols-part-2
Ice n Fire's user avatar
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1 vote
2 answers
88 views

I need to design indicator lights for an Insulation Monitoring Device (IMD) for my school's electrical formula car. I have finished the design of the IMD itself, but the driver needs an icon/symbol ...
Alexander Berryhill's user avatar
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1 vote
0 answers
173 views

I'm trying to simulate an optocoupler circuit in KiCad 8.0 using ngspice, specifically with a PC817 optocoupler, but I ran into several issues because I couldn't find a working ...
Supernova_10's user avatar
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4 votes
2 answers
296 views

Normally I have no problem with reading a PCB, but in this case there appears to be contradictory info. Normally, the square pad would be negative and one could test it to the ground plane, but that ...
tsb's user avatar
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-3 votes
1 answer
95 views

I'm working on a typical school project involving a motion detector circuit, but I'm unsure how to define the component in the first image. Could someone please explain to me how to fix it and ...
Anh Trung Steve's user avatar
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5 votes
3 answers
1k views

The Renesas datasheet for the ICL7106, ICL7107, ICL7107S 3 1/2 Digit, LCD/LED Display, A/D Converters has the following functional diagram: In the diagram, there are circles with X's in them. There ...
Math Keeps Me Busy's user avatar
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0 votes
0 answers
83 views

It's the two dots connected by the bent line. I'm trying to figure out what it is.
kram7211's user avatar
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1 vote
2 answers
134 views

I'm reading schematic of an old cassette player and a bit confused about variable pots. I've attached relevant section of the PCB and schematic of one channel which is exactly same on the other ...
Farid83's user avatar
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2 votes
2 answers
194 views

I'm reading fourth edition "CMOS VLSI Design" by Weste and Harris, and I'm having some trouble understanding a following basic RC circuit (figure 4.8): What does the circle next to V_dd ...
Stargarth's user avatar
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8 votes
2 answers
2k views

I know that the reason why the North American resistor symbol is just squiggly lines because that is how the electrons flow (due to the way how resistors are made), but why is the European resistor ...
SnappyRiffs's user avatar
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6 votes
1 answer
199 views

What component or action does the tube with a ring through it refer to? I believe the switch it's attached to is the low side switch of the Analog Devices ADP5090 regulator and they do say that the ...
sfnagle's user avatar
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