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Electrical Switch question

post #1 of 8
Thread Starter 
I bought a uv lamp for the build I am working on and it has one of those pci slot switches. The switch it came with has three prongs (top, mid, bottom). The two wires connect to the mid and bottom connectors, nothing is connected to the top. Is it correct to assume that the switch, as they wired it, is acting as nothing more than a simple toggle because the second circuit isnt wired?

The reason I ask is I have a SPST toggle thats part of the build theme and I want to use that and not the pci slot switch. The only thing that threw me was the third pin on their switch. I am assuming they gave me a DPST switch with no second circuit wired. If so a SPST toggle is the same thing, right?

(I'm not too great with electricity so I figured I'd ask)
Thanks
Chuckle2Tits
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Chuckle2Tits
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post #2 of 8
Not seeing the switch I would wager you are correct. You could test it by moving the end lead to the open one.
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post #3 of 8
Thread Starter 
doh!!
and I have a continuity tester right in front of me
Ill be right back...
Chuckle2Tits
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Chuckle2Tits
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post #4 of 8
Thread Starter 
Airbozo, that did the trick +rep
I used a continuity tester to prove the circuits are mutually exclusive so a regular SPST toggle will work fine

thanks again
Chuckle2Tits
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Chuckle2Tits
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post #5 of 8
The switch on the PCI backplate is a SPDT while the toggle you have is a SPST. By leaving one of the end contacts of an SPDT switch it will operate as a SPST switch.

SPDT switch
Code:
      _____1
C____/
      _____2
SPST switch
Code:
C____/ ____1
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post #6 of 8
Thread Starter 
ah, SPDT, I get it now. So basically I was corretc but couldnt explain it in the right terms. cool.

thanks
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ancient piece of crap :P 
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Chuckle2Tits
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Hard DriveOptical DriveOSMonitor
1x300 GB WD Velociraptor Asus 16/48 DVD/CD ROM SATA Windows 7 Pro 64 bit Viewsonic VX2255wmb 22" LCD 
KeyboardPowerCaseMouse
Logitech USB wired Silverstone Decathalon 850 PolymorphiX (PMX_v1s) ms optical, wired 
Mouse Pad
ancient piece of crap :P 
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post #7 of 8
yep, on some SPST switches you can actually see where the third contact was cut off.
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post #8 of 8
SPDT = single pole, double throw
SPST = single pole, single throw
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