ON-NONE-ON Switch?

[MmmPedals]

Whats the difference between on off on and on none on switches? see here http://www.mpja.com/products.asp?dept=62

[John Lyons]

Nothing, same thing "None" difference
None meaning "none" connection I guess.

[Scruffie]

Yeah it just means it's a 2-way switch not a 3-way, it's not that clear but that's how it's written if you order from the suppliers.

[Mark Hammer]

I have had 3-position DPDT toggles in which one side position makes both sets of contacts, the middle makes one connection for each set of contacts, and the other side position makes the other pair of contacts.  So, if the contacts are laid out as:

1 - 2 - 3
4 - 5 - 6

Than side position A makes 1 - 2  and 4 - 5, middle position makes 1 - 2 and 5 - 6, and side position B makes 2 - 3 and 5 - 6.

That's useful in some instances, but not what you want.

[amptramp]

Not quite.  An "on - none - on" switch has only two positions.  An "on - off - on" switch has three positions with the center position being no connection.  Think of "on - off - on" as being like a power window switch in a car where the window can be commanded up, stationary or down.  "On - none - on" would be like a high beam switch that is either in low beam or high beam position - there isn't a "no beam" position.  (Although some cars have a momentary high beam flasher that turns on high and low beams simultaneously - but that's a separate switch.)  Speaker phasing is always "on - none - on" - there is no speaker off position.  "On - off - on" should not be confused with three-position switches that actually make three separate connections like an input selector.  These are "on - on - on" and are more common with slide switches.

A switch can also be momentary (spring return to the center position, whether "none" or "off") or not (stays where you leave it).  Confusing enough?

[John Lyons]

Not quite.  An "on - none - on" switch has only two positions.  An "on - off - on" switch has three positions with the center position being no connection.  Think of "on - off - on" as being like a power window switch in a car where the window can be commanded up, stationary or down.  "On - none - on" would be like a high beam switch that is either in low beam or high beam position - there isn't a "no beam" position.  (Although some cars have a momentary high beam flasher that turns on high and low beams simultaneously - but that's a separate switch.)  Speaker phasing is always "on - none - on" - there is no speaker off position.  "On - off - on" should not be confused with three-position switches that actually make three separate connections like an input selector.  These are "on - on - on" and are more common with slide switches.

A switch can also be momentary (spring return to the center position, whether "none" or "off") or not (stays where you leave it).  Confusing enough?

Ah, I can see that now. So none would be "no center position" I wonder if that means momentary so you only get A one side, then B the other side and when it's centered (which would be the normal position...returned to normal since it's a momentary) there is no connection.
Bah...

John

[bumblebee]

I have had 3-position DPDT toggles in which one side position makes both sets of contacts, the middle makes one connection for each set of contacts, and the other side position makes the other pair of contacts.  So, if the contacts are laid out as:

1 - 2 - 3
4 - 5 - 6

Than side position A makes 1 - 2  and 4 - 5, middle position makes 1 - 2 and 5 - 6, and side position B makes 2 - 3 and 5 - 6.

That's useful in some instances, but not what you want.

That does seem like a useful switch indeed!

[mikemaddux]

it seems to me that when on or off in in parenthases means momentary

(on) off on - would mean left is a momentary connection that springs back to the center off position