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Most I/O boards offer open collectors, which I don't know what I would have a use for, but I sure can find a use for relays. Can I flip a relay with an open collector?
This is what I'm looking at
**broken link removed**
I would like to run some 110VAC devices from the open collectors, can someone point me in the right direction for some relays to get?
There are a zillion relays avalible but you need to give a few specification to select one. What is the load draw, that is what is the highest current draw (including surge) that you wish to switch on the 110vac side of the relay, as that defines what you need for the relay's maximum contact current ratings. What value DC voltage will you have avalible for powering the relay through the open collector outputs, 5vdc, 12vdc, 24vdc, etc ? What ever value of DC voltage you select, it will have to have a current capacity to be able to power as many relays as you will be installing, so how many relays do you wish to be able to power on at a time?
Also can anyone shed some light on the kind of resolution I can get on the analog inputs and on the analog outputs?
Hey Lefty, thanks great answers on the resolution.
I would LIKE to run it through my PC powersupply so 12V ~300-500watts, I'd like to be able to run all 8 at once and some items will pull up to 250 watts (lights), but most will be in the sub 50 watt range. All at 110VAC, so I guess I'd need 2.5 Amp and 0.5 amp relays.