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Author Topic: How to make SPST switch to switch DPDT  (Read 2795 times)

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david656

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How to make SPST switch to switch DPDT
« on: September 24, 2009, 03:30:42 pm »
I'm sure its simple and involves some kind of relay or something but its just not coming to mind.

Does anyone know how i can make a simple locking SPST switch flick a DPDT type switch

thanks :-)
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Ed_McCarron

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Re: How to make SPST switch to switch DPDT
« Reply #1 on: September 24, 2009, 06:05:34 pm »
Use the spst switch to energize a dpdt relay.


Code: [Select]


--------------- voltage source---
|                                 |
spst                             |
|                                 |
---------------dpdt coil-----------

                  ---------------------- NO 1
COM 1---------                                 
                \ ---------------------- NC 1


                  ---------------------- NO 2
COM 2---------                                 
                \ ---------------------- NC 2



Clear as mud?
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danny_galaga

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Re: How to make SPST switch to switch DPDT
« Reply #2 on: September 25, 2009, 07:08:14 am »

what he said. Most relays have the circuit diagram written on them too so you shouldn't go wrong. just be wary of the voltage you need to be switching and the voltage the relay needs to operate. In your case you will probably want the same...
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Ed_McCarron

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Re: How to make SPST switch to switch DPDT
« Reply #3 on: September 25, 2009, 08:17:05 am »
Yup.  Match your coil voltage to whatever spare voltages you have floating around.  Use 12v or 5v from one of the drive connectors (yellow = 12v, red = 5v) and you'll be golden.
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whammoed

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Re: How to make SPST switch to switch DPDT
« Reply #4 on: September 25, 2009, 12:12:39 pm »
What is keeping you from changing out the SPST switch to a DPDT?  Seems like that would be easier.
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danny_galaga

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Re: How to make SPST switch to switch DPDT
« Reply #5 on: September 26, 2009, 06:42:10 am »
Quote from: whammoed on September 25, 2009, 12:12:39 pm
What is keeping you from changing out the SPST switch to a DPDT?  Seems like that would be easier.

i assumed the term 'locking spst' meant it is something kinda special you cant get in a dpdt  :dunno
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whammoed

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Re: How to make SPST switch to switch DPDT
« Reply #6 on: September 26, 2009, 09:52:14 am »
Quote from: danny_galaga on September 26, 2009, 06:42:10 am
Quote from: whammoed on September 25, 2009, 12:12:39 pm
What is keeping you from changing out the SPST switch to a DPDT?  Seems like that would be easier.

i assumed the term 'locking spst' meant it is something kinda special you cant get in a dpdt  :dunno

Yeah, not sure about that but here's one that says locking for 0.99:
http://www.sourcingmap.com/15a-high-electrical-current-dpdt-centre-off-screw-terminal-locking-toggle-switch-p-32172.html
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SavannahLion

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Re: How to make SPST switch to switch DPDT
« Reply #7 on: September 26, 2009, 01:32:18 pm »
Quote from: whammoed on September 26, 2009, 09:52:14 am
Quote from: danny_galaga on September 26, 2009, 06:42:10 am
Quote from: whammoed on September 25, 2009, 12:12:39 pm
What is keeping you from changing out the SPST switch to a DPDT?  Seems like that would be easier.

i assumed the term 'locking spst' meant it is something kinda special you cant get in a dpdt  :dunno

Yeah, not sure about that but here's one that says locking for 0.99:
http://www.sourcingmap.com/15a-high-electrical-current-dpdt-centre-off-screw-terminal-locking-toggle-switch-p-32172.html


Note the $5 shipping.
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NiN^_^NiN

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Re: How to make SPST switch to switch DPDT
« Reply #8 on: September 29, 2009, 12:30:08 am »
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