Hi... I have automotive circuit using a pic that when certain input are given drives a transitor high that then in turn connects the coil of my relay, triggering it.
I know that in order to protect the transistor from emf backfeed I need to and have been using a relay with a diode across the coil. I'm using some green ones from delcity but would MUCH rather use a normal diode that I can find at any autoparts store incase I have a problem somewhere down the line. A reliability issue. Plus these things are expensive!
So... I was wondering since I'm using a the same voltage souce (12 battery) for everything, is it possible to move my diode onto my board and still have it provide the same protection ?
My current circuit is A. and the one I would rather be using is B... The sim says that this will work just fine. But they are not always right so....
Any Suggestions ?
Thanks!
I know that in order to protect the transistor from emf backfeed I need to and have been using a relay with a diode across the coil. I'm using some green ones from delcity but would MUCH rather use a normal diode that I can find at any autoparts store incase I have a problem somewhere down the line. A reliability issue. Plus these things are expensive!
So... I was wondering since I'm using a the same voltage souce (12 battery) for everything, is it possible to move my diode onto my board and still have it provide the same protection ?
My current circuit is A. and the one I would rather be using is B... The sim says that this will work just fine. But they are not always right so....
Any Suggestions ?
Thanks!