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dot on a pot symbol?

T

tempus fugit

Jan 1, 1970
0
Hey all;

I've got a schematic that has a little dot on one of the legs of a
potentiometer symbol. What does it mean? I'm guessing it must be marking one
of the legs, but I'm not sure which one.

Thanks
 
J

John Larkin

Jan 1, 1970
0
Hey all;

I've got a schematic that has a little dot on one of the legs of a
potentiometer symbol. What does it mean? I'm guessing it must be marking one
of the legs, but I'm not sure which one.

Thanks

I thought I invented that. It means "clockwise" to me.

John
 
J

JeffM

Jan 1, 1970
0
tempus said:
I've got a schematic that has a little dot on one of the legs of a
potentiometer symbol. What does it mean?

"CCW" takes up more space on the page than "CW" does
so the shorter one is the one that was chosen.
It appears that 2 letters was to great a burden
so someone abbreviated it even more (adding ambiguity).
 
T

tempus fugit

Jan 1, 1970
0
"CCW" takes up more space on the page than "CW" does
so the shorter one is the one that was chosen.
It appears that 2 letters was to great a burden
so someone abbreviated it even more (adding ambiguity).


Thanks guys.

OK, so how does one go about finding which terminal is the CW one? Do you
look at the pot from the front (shaft) side or the back?

Thanks again
 
J

JeffM

Jan 1, 1970
0
tempus said:
how does one go about finding which terminal is the CW one?

Find the 2 terminals that don't change resistance when you tweak the
pot.
Connect the meter to one of those and to the 3rd terminal.
Crank the shaft clockwise;
if the resistance goes DOWN, that's the CW terminal.
 
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