Hello, I am in need of some help designing a 8 channel "relay" board using mosfets. I basically want to recreate those cheap sainsmart 8 channel relay boards but using something solid state. I've narrowed it down to what i believe is an acceptable MOSFET the FQP30N06L. In the end i want to be able to have 8 channels from the arduino control 8 channels out with a shared power source (optional but wanted). I understand the basics of how this should theoretically be setup but am having issues coming up with the full circuit and then i don't know what PCB settings are capable of withstanding the high currents. Anyone able to help out on the circuit design process would be much appreciated.
Basically what i want to recreate:
https://smile.amazon.com/gp/product/B00KTELP3I/ref=ppx_yo_dt_b_asin_title_o02_s01?ie=UTF8&psc=1
Most channels will only see around 20-30W at 12V but one will see around 300W at 12V so might aswell beef them all up.
Basically what i want to recreate:
https://smile.amazon.com/gp/product/B00KTELP3I/ref=ppx_yo_dt_b_asin_title_o02_s01?ie=UTF8&psc=1
Most channels will only see around 20-30W at 12V but one will see around 300W at 12V so might aswell beef them all up.