switches

v-un-v · Posted: Mon Jun 20, 2005 6:31 am Post subject: switches

Is there any such thing as a 3 way toggle switch? "Single-pole-double-throw" I can never remember which is what!? Triple pole, single throw? Or is it single pole, triple throw?

my circuits are overloading! Help!

Tom

Mike Walters · Joined: Mar 24, 2005 Posts: 29 Location: Chapel Hill NC

Some configurations:

SPDT is - - -
DPDT is = = =
SPST is - -

The double throw can be on/on (or on/off, depending on how you wire) on/off/on.

Afro88 · Posted: Mon Jun 20, 2005 4:35 pm Post subject:

If this is for what I think it is, make sure you get one that doesn't revert back to the centre when you release the switch. My LFO's waveform selecter was like that for a while - really made it a 2 hand job when you wanted access to the rect LFO waveform Laughing

Mike Walters · Joined: Mar 24, 2005 Posts: 29 Location: Chapel Hill NC

Yeah, if I remember right, I think the DPDT (on/off/on) switch for the LFO makes the off position default a triangle wave, and then the 2 on's have diodes to only allow the polarities of the ramps go one of 2 ways. Like this:

/|/|/|/|

/\/\/\/\

\|\|\|\|

v-un-v · Posted: Tue Jun 21, 2005 7:08 am Post subject:

fluxmonkey · Joined: Jun 24, 2005 Posts: 708 Location: cleve

C&K model 7211 toggle switches can be used to do sp3t (single pole, three throw). a little pricey (like $7.50 from mouser in single quantities), but nice if you're trying to save space. i use them a lot for adding a third cap to the range select of oscillators.

bbob

v-un-v · Posted: Fri Jun 24, 2005 12:34 pm Post subject:

fluxmonkey · Joined: Jun 24, 2005 Posts: 708 Location: cleve

v-un-v · Posted: Fri Jun 24, 2005 2:32 pm Post subject: