I am (re)building that slot car project I have submitted on the completed projects forum and I am on a standstill:
I have some issues with current surges from a switching load (the slot car tracks) causing trouble to the control circuit (a 74XX array). Both these elements have common ground, in order to communicate DC levels with each other.
I would like to isolate the control circuit from the load without losing the ability to read DC levels from the load. One idea is to use relays that will completely separate the circuits and still be able to read 1 and 0 from the load (I am interested in binary information).
However, they are clumsy and big in size (I need 16). I can't believe there isn't any smarter way.
Any suggestions?
Thanks in advance.
I have some issues with current surges from a switching load (the slot car tracks) causing trouble to the control circuit (a 74XX array). Both these elements have common ground, in order to communicate DC levels with each other.
I would like to isolate the control circuit from the load without losing the ability to read DC levels from the load. One idea is to use relays that will completely separate the circuits and still be able to read 1 and 0 from the load (I am interested in binary information).
However, they are clumsy and big in size (I need 16). I can't believe there isn't any smarter way.
Any suggestions?
Thanks in advance.