Full Member level 5
hi, I have a cicuit that has a few sensors and a few 5V relays. each relay takes about 75 mA current and voltage from sensors are read with 16 bit ADC. whenever there is a toggle in relays there is a spike in sensors voltage. my question is how can I alleviate this by reducing electromagnetic interference. as far as I know magnetic field forms between the wire that has a current and its nearest return path(please confirm that). so should I thinking about creating a return path around the relay? thanks.