- #1
suprant0010
- 7
- 0
Im working on a bit of a science project, my knowledge of electronics is limited...for this project i need some type of pickup on a rotating object to connect a circuit to open a solenoid valve whenever the object is at a given point on its rotation...and it has to fast enough to do this a few hundred times a second
my first thought was a magnetic pickup, because it doesn't need any contact with the object to get a reading...but to my understanding most magnetic pickups, like the ones used on engines and such only change the resistance between two terminals...in order to use this I would think I need some type of control module to measure that change in resistance, and turn it into an on/off switch, seems like a little too much for me
I have never seen one that simply goes from open circuit to closed when the pickup mark goes by, does something like this even exist? I've been searching everywhere for it, and I am finding nothing
can someone point me in the right direction? not sure what to even call said switch, if it even exists, that's probably why i can't find one
are there any other ways I am unaware of to getting a non-contact pickup switch other than magnetically?
my first thought was a magnetic pickup, because it doesn't need any contact with the object to get a reading...but to my understanding most magnetic pickups, like the ones used on engines and such only change the resistance between two terminals...in order to use this I would think I need some type of control module to measure that change in resistance, and turn it into an on/off switch, seems like a little too much for me
I have never seen one that simply goes from open circuit to closed when the pickup mark goes by, does something like this even exist? I've been searching everywhere for it, and I am finding nothing
can someone point me in the right direction? not sure what to even call said switch, if it even exists, that's probably why i can't find one
are there any other ways I am unaware of to getting a non-contact pickup switch other than magnetically?