Best Selector Switch? ..Advice plz!

[Wikkid]

Hmmm come to think of it.... does it really have to be 2 deck??

 

[rayma]

That's what I figured....
Gotta guess if ti means one pole.... but I'm thinking yes, since its not.

I've used the Grayhill switches in instrumentation, and you'll be happy with them.

 

[rayma]

Hmmm come to think of it.... does it really have to be 2 deck??

Not two deck, but two pole. Two deck is a more expensive configuration,
but the channels would be physically separated more, with less cross-coupling.
If a large number of positions is needed (more than six or so), then two decks are necessary.
Here's a single deck, 4 pole 3 position switch, for example.
http://www.ebay.com/itm/4P3P-Four-P...d=100227&rk=4&rkt=15&mehot=ag&sd=162328613354

 

[Wikkid]

Thanks again ray....
That clarifies it.... 2 decks are preferable.. but not imperative..
Exactly what I was wondering...

The search continues....

BTW, I'm using this search string now:
GRAYHILL ROTARY SWITCH 2P 4POS 2D NEW OLD STOCK NOS

 

[rayma]

That clarifies it.... 2 decks are preferable.. but not imperative..

This new one is sort of reasonable. Elma Rotary Selector Switches

 

[Wikkid]

That reminds me... shorting or non shorting... and why?

 

[Wikkid]

I've looked at THAT elma, on that site, many many times...
But it ain't "da nice price" ....lol

The NOS/milspec are sooo very appealing..
I'm finding several now, if willing to settle for 1 deck..
I'm gonna hold out a while, since I have high hopes for this project..

 

[rayma]

That reminds me... shorting or non shorting... and why?

Usually nonshorting (break before make) types are used for selector switches,
so that two sources are not connected together briefly.

 

[Wikkid]

That's what I thought... thnx again!

Then, there's always this:
http://www.mouser.com/Grayhill/Elec...vsm2dZ1ytibi5Z1ytibi2Z1ywv2d1Z1z0z1h7Z1z0z040

Prices not much higher too..
The cheaper ones anyway...
(less "features)

 

[Wikkid]

How about this one?
http://www.mouser.com/ProductDetail/Grayhill/71B36-02-2-04N/?qs=sGAEpiMZZMvNbjZ2WlReYhndqMY8foDIht5EZkNVVYU%3d
For $18.39?
250ma ok?

 

[AndrewT]

it says 2D.
Does that mean: two deck?
In which case each deck is 1pole
and with two decks you end up with 2poles 4ways.

 

[rayma]

How about this one?
http://www.mouser.com/ProductDetail/Grayhill/71B36-02-2-04N/?qs=sGAEpiMZZMvNbjZ2WlReYhndqMY8foDIht5EZkNVVYU%3d
For $18.39?
250ma ok?

That's a BCD type, for relay control.

 

[rayma]

there's always this:
http://www.mouser.com/Grayhill/Elec...vsm2dZ1ytibi5Z1ytibi2Z1ywv2d1Z1z0z1h7Z1z0z040

Also the BCD type.

 

[BillWojo]

If you Google Grayhill selector switch and get on there website you can find all about the switch in question if you have the part number. Takes a little reading and searching at first if your not used to doing this.
As an example, I have 2 pieces of PN 44D30-02-2-ADJN
44 = the series or type
D = Standard adjustable stops (6 pole switch can be limited to 4 pole or what ever)
30 = angle of throw between detents
02 = number of decks
2 = Poles per deck (switch in question has 12 sets of contacts per deck with 2 poles = 6 position
A = solder lugs
D = adjustable stops
J = positions per pole depending on number of poles.
N = Non shorting.

The body of this particular switch is 1" in diameter and about 1 1/2" long not including the shaft. Shaft diameter is 1/4" with a flat. Diameter of body does not include the solder lugs.
Current rating is 1 amp and it will withstand 100,000 cycles of operation. (complete cycle through all contacts) It has a very nice feel with quality ball detents .

For information about the switches your looking at, get on there site and spend a little time to decipher the part number. These are high quality switches available in thousands of styles.

BillWojo

 

[Wikkid]

I'm SOOOO confused! lol..
I'll go grab dinner then put my thinking cap on..

Is BCD type not desirable for audio-source-selector purposes?

Working on "doping out" what Bill said..

 

[rayma]

Is BCD type not desirable for audio-source-selector purposes?

The BCD type grounds one or more terminals at a time, depending on the degree of rotation,
according to the binary code. It's not a standard switch that just selects one of several terminals.

 

[Wikkid]

I haven't so far seen where it mentions its BCD...

For that matter, few "markers" that would indicate how to narrow it down..

I'm up to my neck in spec sheets on the Grayhill site...

At SOME point..... its just easier to just order the freakin Elma from the audiophile-diy store... and live with whatever disadvantage it causes.....

That much time and effort spent learning something you'll use one, maybe two times.... just doesn't make sense..

 

[Wikkid]

Do you recomend the P/N PN 44D30-02-2-ADJN for this application Bill?
Is there a parameter or 2 that could be substituted that would be more ideal for someone who doesn't happen to have those on hand?

 

[TonyTecson]

Hi, this is what i use on my builds.....you have to make a small board for it.....
4P3T Single Deck Rotary Switch Band Selector 4 Pole 3 Position with Knob Black | Lazada PH

 

[Wikkid]

The best I've been able to do with a part number is this:
XXX30-02-2-AXJN
The X's are for what I can't determine (so far).
I don't know what series.... and haven't been able to find a clear legend.
I don't see why I need adjustable stops... unless I'm missing something... so X till I can determine what the correct alternative is..

ADJN
D = there's the adjustable stops again...
J = Haven't figured out yet where the legend for this is... don't know what the value of J is... nor what the letter code for the value of 4, that I need...

Dam their data sheets are disjointed!
Not to mention confusing...
Absolutely we're not their intended client...
GOVT bureaucrats obviously ARE!

My eyes are crossing... its time for bed....