D donny New Member Jun 20, 2005 #1 ok guys, this has in my littmited knowledge gone way over my head. How can i using digital logic to determin from a 12v source if something is on or off. Thanks guys
ok guys, this has in my littmited knowledge gone way over my head. How can i using digital logic to determin from a 12v source if something is on or off. Thanks guys
williB New Member Jun 20, 2005 #2 donny said: ok guys, this has in my littmited knowledge gone way over my head. How can i using digital logic to determin from a 12v source if something is on or off. Thanks guys Click to expand... i'm not sure what you're asking. do you want to know if something that is running on 12 V is on or off, using 5V logic levels ??
donny said: ok guys, this has in my littmited knowledge gone way over my head. How can i using digital logic to determin from a 12v source if something is on or off. Thanks guys Click to expand... i'm not sure what you're asking. do you want to know if something that is running on 12 V is on or off, using 5V logic levels ??
Dr.EM New Member Jun 20, 2005 #3 Most CMOS logic can run at up to 20v, so the switching point would be as high as 10v, so I think the answer is yes.
Most CMOS logic can run at up to 20v, so the switching point would be as high as 10v, so I think the answer is yes.
D donny New Member Jun 20, 2005 #4 Hi Guys, and thanks for the replies. Willib yes i want to check to see if something is running from 12v from diggi logic,
Hi Guys, and thanks for the replies. Willib yes i want to check to see if something is running from 12v from diggi logic,
D donny New Member Jun 20, 2005 #6 Willib, i am trying to get a circuit together that will work my headlight washers, but, i only want the heeadlight washers to work while the headlights are on. so a circuit which will wash my windscreen in daylight and also my headlights at night. Thanks Don
Willib, i am trying to get a circuit together that will work my headlight washers, but, i only want the heeadlight washers to work while the headlights are on. so a circuit which will wash my windscreen in daylight and also my headlights at night. Thanks Don
panic mode Well-Known Member Jun 20, 2005 #7 you could power the circuit from same branch as your headlights. no headlights - no power for the circuit.
you could power the circuit from same branch as your headlights. no headlights - no power for the circuit.