Contact closure of 120V power outlet
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Posted by on October 13, 2005, 9:26 pm
Please log in for more thread options Hey All This is actually a lab automation question, but it seemed like this group has knowledgeable people, so here goes. I have a device (a syringe pump) that runs on 120V. I want to be able to turn it on and off via a contact closure (on an HPLC) that can only handle ~1V. I really need to keep this a hard wired solution, so X10/wireless won't help. Also, I'm a biochemist and would probably burn down the lab with a soldering iron. So, is anyone aware of a commercial product that can control a 120V outlet that uses contact closures for control? THanks for any help! | |||||||||||||
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Posted by pha on October 20, 2005, 12:40 pm
Please log in for more thread options dennis.benjamin@gmail.com wrote: You might consider a "solid state relay" which can be found on eBay. Many of these operate by the application of 3 to 30 VDC on the input and they switch 120 / 240 on the output. These are optically isolated. Thus, your relay would switch a small voltage, say 5 VDC to the solid state relay, which would in turn switch the 120 VAC. I usually mount these in a metal electrical box to avoid any chance of contact with the 120 VAC. Best wishes. Peter H Anderson, http://www.phanderson.com Microchip PICs, BasicX, PICAXE Processors | |||||||||||||
>
> This is actually a lab automation question, but it seemed like this
> group has knowledgeable people, so here goes.
>
> I have a device (a syringe pump) that runs on 120V. I want to be able
> to turn it on and off via a contact closure (on an HPLC) that can only
> handle ~1V. I really need to keep this a hard wired solution, so
> X10/wireless won't help. Also, I'm a biochemist and would probably burn
> down the lab with a soldering iron. So, is anyone aware of a commercial
> product that can control a 120V outlet that uses contact closures for
> control?
>
> THanks for any help!