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Best way to switch multiple circuits? Answered

Hi, all - first time posting.
I have limited knowledge with electronics and have come across a scenario where I basically need a kill-switch for a cable with 9 ends.
I can't find any sort of toggle switch (SPST, DPDT, etc..) that would accommodate that many wires.
I started reading up on digital bus switch IC's. It seems a 10-digit one like this would work, leaving one unused.

http://www.digikey.com/product-detail/en/74CBTLV3861PW,118/568-8418-1-ND/2765135


My question: is this the easiest solution? I simply don't know what all options exist, so any advice from someone more experienced would be greatly appreciated. Thank you for your time.

-Caleb

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caitlinsdad

4 years ago

I think you have to consider what is that 9 lead cable? Is it just something like an ethernet cable carrying low voltage data signals or heavy current from the mains. Are the devices hooked up to it sensitive to voltage/current spikes - (motors attached) when you switch on/off? Digital switching may involve a bit more circuitry than that chip alone.

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calebpaulcaitlinsdad

Reply 4 years ago

Thanks for your reply. It's for a FireWire 800 cable. may sound strange, but I need a way to kill the actual cable. The computer supplies the power upon connection, so I'm needing to break the data connection. I've learned that putting any one of the data cables on a SPST toggle switch will kill it, but it won't turn it back on. So I've decided that it's the physical act of plugging the cable in to your computer and all the contacts connecting at once that powers it up, so that's where I'm guessing that if I had a way to switch all 9 cables on and off together that it might work.

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caitlinsdadcalebpaul

Reply 4 years ago

Are you just trying to turn off all the devices connected on that firewire cable or just one or one in the chain? If you look for the pinout diagram of a firewire 800 cable, two wires should be for power(ground and 30 volts). Putting a switch on the hot 30v line would interrupt the power to the device like an external hard drive.