Lord of Shadows
2[H]4U
- Joined
- Mar 9, 2004
- Messages
- 3,322
I'm trying to wire up a little relay to switch on a 12v .5amp source when an led turns on. I first tried a normal 12v car relay I had laying around and the led didnt have enough voltage I suppose to flip the switch.
So I picked up a some little reed relays from radioshack http://www.radioshack.com/search/index.jsp?kwCatId=&kw=reed%20relays&origkw=reed relays&sr=1 (I tried the other one after the first didnt work)
So the 5v one works, but almost instantly gets stuck on. The 12v one wont switch on with led voltage and even after switching with 12v it gets stuck on as well. Rather than guess at another one I figured I'd just ask. (I'm guessing now that the voltage rating is for the coil and amp rating is for whatever is going through the switch)
So I picked up a some little reed relays from radioshack http://www.radioshack.com/search/index.jsp?kwCatId=&kw=reed%20relays&origkw=reed relays&sr=1 (I tried the other one after the first didnt work)
So the 5v one works, but almost instantly gets stuck on. The 12v one wont switch on with led voltage and even after switching with 12v it gets stuck on as well. Rather than guess at another one I figured I'd just ask. (I'm guessing now that the voltage rating is for the coil and amp rating is for whatever is going through the switch)