Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [drawing]

65 questions
328
votes
8 answers

Rules and guidelines for drawing good schematics

There are a lot of poorly drawn schematics here. A few times people have actually asked for critiques of their schematics. This question is intended as a single repository on schematic drawing rules and guidelines can point people to. The question…
Olin Lathrop
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Software to create timing diagrams

In my professional life, I sometimes need to create timing diagrams for protocols: UART, SPI, etc. However, I can't find any good programs available. What programs can be recommended for this and what is the experience using them?
Seidleroni
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34
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4 answers

What software tool was used to draw these circuit schematics?

I was reading online and found this site: http://www.cppsim.com/ I was very curious how this professor drew all these circuit diagrams in his lecture notes (such as this one: http://www.cppsim.com/CommCircuitLectures/lec9.pdf). They just look very,…
Leo
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20
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2 answers

Is it ok to 'snake' the flow of my schematic?

I recently watched this video by EEVblog on drawing schematics. One thing he talked extensively about was that the logical flow of a schematic should flow from left to right. Whilst this makes perfect sense to me, I have recently found myself in a…
user205112
19
votes
8 answers

Is it possible to draw circuits through code?

Is there a better way not by writing netlist files. something like: Define Battery1 As a Battery Define Resistor1 As a Resistor Connect Battery1 First Terminal to Resistor1 Second Terminal Connect Resistor1 First Terminal to Battery1 Second…
user37421
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14
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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
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7 answers

How do devices/appliances draw more current when needed?

Suppose I have a desktop computer and I decide to do something that requires more processing power. In this case my computer will draw more current to increase power. How is this increase in current performed? Does my computer open up more parallel…
rr1303
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Software for creating cable schematics

I'm looking for free software to create drawings of communication cables eg. DE-9, RJ-45, Ribbon Cables, and Molex. I can't seem to find any software that comes with images of the connectors that can also be used to show how the cable is wired. I've…
mjh2007
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What do you call the drawing which contains tracks, pads and drilling points of a PCB layer/side?

Example: Does this drawing has a technical name? I see that people usually call these drawings "PCB". But, PCB is physical object, physical implementation of circuit, isn't it? Is these kind of drawings really called "PCB", or do they have a…
hkBattousai
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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 Them In Your Designs) But this symbol can't be…
iwantmyphd
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4 answers

Altium Keep-Out Layer Locked

When I try to draw a line in the Keep-Out Layer in Altium by clicking the tab for the Keep-Out Layer and placing a line, the layer suddenly changes to a different one and prevents me from adding to the Keep-Out Layer. Additionally, when I try to…
Billy Kalfus
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Where do you find dimensions for drafting symbols to their standard?

Where do I find the official dimensions to draft electrical symbols according to their standard? So far, I've referred to ANSI/ISA-5.1-2009 to draw instrumentation symbols. In it, there is a section that breaks-down the drafting components for each…
Justin St-Amant
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2 answers

Understanding a mechanical drawing

I'm trying to understand this mechanical drawing. (Another one. I asked a question about mechanical drawings a while back.) I can work out most of the dimensions, but the mount pads are confusing me. They have two numbers (0.7 and 1.2) beside them.…
Thomas O
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Which symbol to use for polarized capacitor?

Ok guys, this has been driving me crazy and I would love an absolute universal answer (even though I know there are disputes)... Which symbol should I use for a polarized capacitor? At school they taught us to use the "two straight lines with a +…
Hreggviður Emil Eðvarðsson
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1 answer

A "B" inside a triangle symbol in connector drawing datasheet

I was checking a drawing datasheet, and I noticed this symbol. A B inside a triangle. As seen on the screenshot, the symbol is on the side of the table that indicates the pinout. I can't find out anywhere what it means. Any help? Found this info at…
NicoCaldo
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