I´ve simulated the SCR circuit in Multisim (before burning something) and it doesn´t work as expected. Current limitation doesn´t work, it doesn´t start as normally on, looks like it only cuts with a short. I´ll have to risk some components and build it...but I´m not convinced it can work.
So I´ve learnt to use separate power regulators for the sensors. Main power supply is 12V, sensors are 5V, and electrovalves are 12V.
So I´m looking for something to replace a regular fuse to control the current of the 12V line.
What do you suggest?