Temperature Switch Symbol For Electronic Schematics - Page 1
Forum section: electronics / beginners

author: 2X
author_rank: Frequent Contributor
timestamp: April 19, 2025, 02:15:10 pm
content: Hello,what symbol of a temperature switch you suggest me to use on my schematics. I found the below symbols at the attached picture (Temperature & Thermal Switches.png) but I beleive they are for schematics where made by electricians.Source:https://www.electricaltechnology.org/2014/11/types-of-switches-electrical.html#scr-as-a-switch

author: jwet
author_rank: Frequent Contributor
timestamp: April 19, 2025, 03:43:02 pm
content: A pretty standard symbol would be a NC or NO switch like a pushbutton with a circle around it and a "T". You might also label it "Overtemp".

author: 2X
author_rank: Frequent Contributor
timestamp: April 19, 2025, 04:49:13 pm
content: Quote from: jwet on April 19, 2025, 03:43:02 pmSomething like on the below image?

author: jwet
author_rank: Frequent Contributor
timestamp: April 19, 2025, 06:35:29 pm
content: Or the circle could enlcose the swtich and the T.

author: calzap
author_rank: Frequent Contributor
timestamp: April 19, 2025, 07:01:44 pm
content: I just use the circle-T with the operational stats in the circle. See the pic. Mike

author: 2X
author_rank: Frequent Contributor
timestamp: April 19, 2025, 07:29:37 pm
content: I made the below symbols.

author: SteveThackery
author_rank: Super Contributor
timestamp: April 19, 2025, 07:40:16 pm
content: They look good. But what font did you use for the red lettering? It looks out of place. It's not the dreaded Comic Sans, is it?

author: 2X
author_rank: Frequent Contributor
timestamp: April 19, 2025, 07:53:03 pm
content: Quote from: SteveThackery on April 19, 2025, 07:40:16 pmI use my favorite font "Comic Sans" when I want to emphasize on something essential.Thankscalzap&jwetfor the help.

author: Benta
author_rank: Super Contributor
timestamp: April 19, 2025, 08:41:32 pm
content: KiCAD offers this symbol fon a NO temp switch. Can be redrawn to NC easily.

author: coppercone2
author_rank: Super Contributor
timestamp: April 19, 2025, 11:40:04 pm
content: a small bomb symbol should do it for normally closed

author: Analog Kid
author_rank: Super Contributor
timestamp: April 20, 2025, 12:36:15 am
content: Quote from: Benta on April 19, 2025, 08:41:32 pmI like the OP's symbol much better. (Even with Comic Sans!)Hate those obviously-drawn-by-a-1990s-era-graphics-program looking symbols. Ugh.

author: SteveThackery
author_rank: Super Contributor
timestamp: April 20, 2025, 06:14:31 pm
content: Quote from: 2X on April 19, 2025, 07:53:03 pmOh my goodness! I've never heard that said before about Comic Sans.Still, good for you for thinking different.

author: Benta
author_rank: Super Contributor
timestamp: April 20, 2025, 09:23:29 pm
content: Quote from: Analog Kid on April 20, 2025, 12:36:15 amPerhaps a distinction between understandable/readable and "aesthetically pleasing" makes sense here?

author: incf
author_rank: Frequent Contributor
timestamp: April 20, 2025, 09:59:01 pm
content: Quote from: coppercone2 on April 19, 2025, 11:40:04 pmA what now? I've never heard that name beforeI'm going to guess the circle T symbol

author: Analog Kid
author_rank: Super Contributor
timestamp: April 20, 2025, 10:02:01 pm
content: Quote from: incf on April 20, 2025, 09:59:01 pmi think it was, it was a, it was a joke, son.

author: TimFox
author_rank: Super Contributor
timestamp: April 20, 2025, 11:26:47 pm
content: I’m curious about the origin of the “one cycle of a square wave” figure indicating temperature activation found in some these symbols.

author: incf
author_rank: Frequent Contributor
timestamp: April 20, 2025, 11:31:59 pm
content: Quote from: TimFox on April 20, 2025, 11:26:47 pmbimetallic strip

author: TimFox
author_rank: Super Contributor
timestamp: April 21, 2025, 03:03:22 am
content: Makes sense