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question about switch

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wejos

Member
hi guys,

two terminals shorted labeled as SW Power in panel 1 of the MOBO will cause the CPU to turn on. Sometimes a switch called micro-switch is used to short these two terminals. I also noticed that printers use the same turning-on and turning-off style, a momentary shorting of two terminals will turn on the printer.

my question is i don't know the name of this switch, i've seen micro-switch but they are large ones compared to, say for example the ones used in printers. the electronic-store people were laughing at me since i did not know the correct name of the part. I had trouble explaining to them what i wanted to buy. can you please teach me the name of this switch?

as usual thank you very much for your help.
 

Mr RB

Well-Known Member
-SPST (means it has 2 terminals only)
-momentary action (means it only works when held down)
-normally open (means the contacts are normally OPEN, then close when activated)
-pushbutton (refers generally to most of these type devices)
-tact switch (refers to the tiny square ones they use on PCBs)

So a "SPST momentary-action normally-open pushbutton" should get you one that mounts in a front panel etc. For the real tiny ones to be soldered onto a PCB tell the jerks it might be called "tact switch".

Kindof ironic since "tact" is something they seem to be lacking...
 

wejos

Member
LMAO

you said it

tact switch, a "SPST momentary-action normally-open pushbutton", thank you very much for your help Mr RB.

tact switch

tact switch
 
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