On/on/on toggle

[dmraco]

Is an on/on/on toggle the same thing as a DPDT switch?

Thanks.....

 

[Cagey]

Tough to say. ON-ON-ON describes switch contact states, while DPDT describes construction. Right offhand, I'd say those two are not the same, but you really need a schematic drawing to know anything for sure.

 

[line6man]

On/On/On describes a three position switch in which the common(s) are connected to a throw or throws in all positions, and all positions are latching. DPDT simply describes a switch with two poles and two throws. A switch can be one, the other, both or neither.

In the case of DPDT On/On/On switches, they often have a "split" middle position which connects one common to the normally open throw of its pole, while the other common goes to the normally closed throw of its pole. They are commonly externally jumpered to SP3T switching patterns, however, they find many uses in other applications, such as series/single coil/parallel switching, or LPF/bypass/HPF switching.

What were you trying to do with the switch?

 

[thebutcher85]

As per your question if the on/on/on is the same as aDPDT, I don't know...  ???

BUT, I used an on/on/on switch on the Warmoth LP baritone I did, to activate the 3 modes of the Duncan P-rails I used, it worked great.

Dunno if that's even relevant to your question though haha!

Carry on...

 

[Dan025]

joey said it best. i'd say very often a switch will be both but the variations that can have that description are many. a telecaster switch is technically both but if you remove one of the poles it is still on/on/on but not dpdt. also les paul switches are normally both but each pole only has one contact other than the commons, the commons are bridged together in the lp factory wiring. neither the construction nor the contact states is really descriptive enough. you really need a scematic or a diagram that shows the position/contact state relationship.

can you give some context for why you are asking? if it comes down to a question of "is this what i need?" or "will this do what i want it to and how can i make it do that?" then knowing the application and the switch in question would help. if it's just knowledge seeking then i think you've gotten about the best possible information.

 

[dmraco]

On/On/On describes a three position switch in which the common(s) are connected to a throw or throws in all positions, and all positions are latching. DPDT simply describes a switch with two poles and two throws. A switch can be one, the other, both or neither.

In the case of DPDT On/On/On switches, they often have a "split" middle position which connects one common to the normally open throw of its pole, while the other common goes to the normally closed throw of its pole. They are commonly externally jumpered to SP3T switching patterns, however, they find many uses in other applications, such as series/single coil/parallel switching, or LPF/bypass/HPF switching.

What were you trying to do with the switch?

series/split/parallel
http://www.seymourduncan.com/support/wiring-diagrams/schematics.php?schematic=ssp

 

[Jumble Jumble]

Yep, that's a DPDT on/on/on switch.

 

[Patrick from Davis]

If you follow this pattern, this is the on/on/on that they are referring to.  It is a confusing naming scheme because of the ambiguity.

Up      Mid      Down

I  I      I  .      .    .
I  I      I  I      I    I
.  .        .  I      I    I

Series  Split  Parallel

The lever on the switch generally goes the opposite direction than the contacts, so in the first case, series, the lever would be down.  If you run through the wiring scheme that SD gives, it will work, but at times I swear it is voodoo how some of these things work out.
Patrick

 

[line6man]

If you follow this pattern, this is the on/on/on that they are referring to.  It is a confusing naming scheme because of the ambiguity.

Up      Mid      Down

I  I      I  .      .    .
I  I      I  I      I    I
.  .        .  I      I    I

Series  Split  Parallel

The lever on the switch generally goes the opposite direction than the contacts, so in the first case, series, the lever would be down.  If you run through the wiring scheme that SD gives, it will work, but at times I swear it is voodoo how some of these things work out.
Patrick

Actually, it's the other way around for the middle position.
If you disregard what's on the right side, the left side of this picture shows the switching scheme for DPDT On/On/On and SP3T switches.

 

[TroubledTreble]

There can be different variations of a DPDT. It is important to know which one you need. The variations can be quite extensive.

On-On-On
On-Off-On
Off-On-On
Mom-Off-On
Mom-On-Mom  (momentary)
and so on...

Typically in relation to guitars use On-On-On so as to not have any "off" selections.

 

[line6man]

There can be different variations of a DPDT. It is important to know which one you need. The variations can be quite extensive.

On-On-On
On-Off-On
Off-On-On
Mom-Off-On
Mom-On-Mom  (momentary)
and so on...

Typically in relation to guitars use On-On-On so as to not have any "off" selections.

Momentary switching is typically denoted in parenthesis. For example "On/Off/(On)" indicates a center off scheme with a latching position to one side, and a momentary position to the other side. "On/(On)" is a two position momentary switch. Etc.

 

[TroubledTreble]

Yes, it was after I  wrote "Mom" that I thought I would put in parenthesis that I was speaking of momentary for those who may not have understood what I meant. Quite correct, the normal way to denote it is "(On)". Just trying to keep it simple.