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Old 4th April 2018, 09:08 PM   #1
gimpchop is offline gimpchop
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Default Selector switch

Hi I'm trying to add a selector switch to control inputs i.e tape CD mp3 ECT but I don't know what type of switch to order. I know I want a rotory style switch but as for how many poles I need. Thanks
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Old 4th April 2018, 09:17 PM   #2
scottjoplin is offline scottjoplin  Wales
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Hi, poles are separate switches, ie, stereo you'll need 2 pole, then ways is the number of sources you want to switch
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Old 4th April 2018, 09:17 PM   #3
rayma is offline rayma  United States
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Quote:
Originally Posted by gimpchop View Post
Hi I'm trying to add a selector switch to control inputs i.e tape CD mp3 ECT but I don't know
what type of switch to order. I want a rotory style switch but as for how many poles I need.
You need an X position 2 deck rotary switch for stereo, where X is the number of different sources.
Tape, CD, and mp3 would be 3 sources, so that's a 3 position 2 deck rotary switch.
Each deck is for one channel. Some switches however can have both channels on the same, single deck.
Of course you can get a switch with more positions than you need, and ground the extras.

Last edited by rayma; 4th April 2018 at 09:35 PM.
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Old 5th April 2018, 12:46 AM   #4
MAAC0 is offline MAAC0  Portugal
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This one perhaps ? It Switches Stereo since it has 3 poles.
Third pole You can use to switch source Led indicators.


Hi-Rel Adjustable Rotary Switch | 3 Pole 2-4 Position | 10WA366
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Old 5th April 2018, 02:53 AM   #5
tomchr is offline tomchr  Canada
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You'll need a two-pole switch with as many positions as you have sources. Note that some switches, like the Lorlin (EU) or C&K (North America) switches have stops that are movable. In those cases you can buy a two-pole, four position (or four throw; 2P4T) switch and move the stop one position and get a 2P3T switch out of it.

Ideally, the switch should be break-before-make, i.e. it breaks the connection with source #N before making the connection with source N+1 when you rotate the switch. Most switches are break-before-make.

Tom
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Old 5th April 2018, 09:22 AM   #6
gimpchop is offline gimpchop
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Great thanks for all the awnsers most helpfull.
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Old 5th April 2018, 09:34 AM   #7
Mooly is offline Mooly  United Kingdom
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Selector switch
Try these:

http://cpc.farnell.com/lorlin/ck1030...ric/dp/SW04137

Free delivery on orders over 5. Just type Lorlin into the search box and you will see all the options. A 3 pole 4 way would also allow you to add an LED indicator to show which source was selected.
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Old 7th April 2018, 03:43 AM   #8
Panelhead is offline Panelhead
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I like using a four pole for stereo. Parallel two poles for each channel. Less chance of a dirty contact. Plus less noise in theory.
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Old 7th April 2018, 04:35 AM   #9
nezbleu is offline nezbleu  Canada
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Selector switch
I like a single pole switch energizing a two (or more) pole relay.
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