Dual Ganged Potentionmeter with Push/Pull DPDT

[Runewalker]

An unusual component was recently trialed, tested and proven in a wire-up application documented here and first discussed here (pg 3 of the thread)

It is a Dual Ganged Potentionmeter with Push/Pull DPDT Bourns part from Mouser:

Mfg Parts # PDB183-GTR21-504A2

Here is a pix of the device:


I found it very useful for space constrained installations. It is dime sized (17mm)in diameter instead of the full quarter-sized (24-25mm) pots I typically prefer. However, the "full sized" dual ganged pots I've used tend to require more torque to turn than similar sized single pots. This particular component feels more like a conventional single pot. Very smooth, and itperforms as advertised.

I hope this helps the community.

RW

[electric]

Is there a center detent on this pot? Looks pretty useful!

[sumgai]

electric,

Rune doesn't check in every day, so hang tight, he'll be along in due time....

[newey]

These are not center-detented, per the data sheet in Rune's link above. It is a straight dual-gang pot.

They are available in either straight or knurled shaft varieties, however. Choice of 250K or 500K. No choice on taper, they are all audio (log) taper.

Per Bourns part numbering, the designation "PDB183-GTR" (meaning, obviously, that it's for guitar use)is the series for all their P/P pots of various types. The "21" after the "GTR" designates that it is dual-gang, with a knurled shaft. A "22" in that spot designates a dual-ganged straight-shaft pot. "504" is the resistance rating (meaning 50 + 4 zeros, i.e., 500,000Ω, or 500K). The 250K ones are thus designated "254". "A2" is the designation for audio taper.

All of the other parts numbers in the PDB183-GTR series are single-gang pots.

"Series PDB182-GTRB" are the blend/balance pots, which are all center-detented. None have a P/P switch, however.

[sumgai]

newey,

Read the rest of the datasheet.... when I look at Pg 4 of that document, I see graphs for 2 different tapers, leading me to believe that either is available. Not to mention the coding chart for ordering purposes, which also delineates the taper of choice. What it does not state, however, is whether they can be mixed in a double-decker: one deck having linear and the other having audio. Also, available values range from 10K to 1MΩ. (Interestingly enough, the so-called Gibson standard of 300KΩ is available.) And no word on whether or not a double-decker can have differnent resistance values per deck. That's not usually the case, but one could wish, right?

Sadly, you are correct in that they don't specifically report that a detented version is available. But these things, besides being made by a top-quality company, are physically smaller than we're used to, though not as small as many of the lesser-esteemed import parts. The upside is, they're available in both short and long-bushing versions, which should make them pretty popular with just about every axe builder/modder.

Not a bad price, either.

HTH






sumgai

[newey]

when I look at Pg 4 of that document, I see graphs for 2 different tapers, leading me to believe that either is available. Not to mention the coding chart for ordering purposes, which also delineates the taper of choice.

See page 856 of the Mouser online catalog, which can be reached via Rune's link above. It looks like Mouser carries all of these that Bourns makes, but the only dual-gang P/P pots are the ones with the -21 or -22 designation, and these are all log.

The other resistances listed, and the linear tapers listed, are all single-gang push-pulls.

[sumgai]

^^^^ That's all from what Mouser says they sell. The Datasheet published by Bourns says you can have anything listed thereupon. Maybe not from Mouser, but someone will have it.

HTH