we need to use a diode with inductive loads , right ?
but is it important where the diode is located , can i put the diode on my PCB and connect the load with long cable , lets 120 feet?
we need to use a diode with inductive loads , right ?
but is it important where the diode is located , can i put the diode on my PCB and connect the load with long cable , lets 120 feet?
hi,
You have to consider the EMR electromagnetic radiation cause by the back emf when the current is suddenly switched off in the inductor as well as the voltage 'spike' that would be present on the driving device mounted on the PCB.
That 120' of cable will act as an aerial and radiate electrical noise which could cause interference on your equipment and other users.
hi,
You have to consider the EMR electromagnetic radiation cause by the back emf when the current is suddenly switched off in the inductor as well as the voltage 'spike' that would be present on the driving device mounted on the PCB.
That 120' of cable will act as an aerial and radiate electrical noise which could cause interference on your equipment and other users.
Their main function is to protect the inductor drive from the high back emf at current switch off.
Is there a problem with connecting a diode at the inductor.
well , if you have to connect to solenoid , you have find place for the diode ,for now I put the diode inside the solenoid connector with screws , and I thought would be it easy to have the diode on the PCB , and cables run from that pcb to solenoids
Their main function is to protect the inductor drive from the high back emf at current switch off.
Is there a problem with connecting a diode at the inductor.
well , if you have to connect to solenoid , you have find place for the diode ,for now I put the diode inside the solenoid connector with screws , and I thought would be it easy to have the diode on the PCB , and cables run from that pcb to solenoids
I've put the diodes up to a foot away (at the relay contact driving a coil) in existing circuits to cure emf problems but have always also added a .1 uf cap at the + supply lead to the coils to shunt the spike to ground. Installing the diode at the coil is the best location but sometime it's just not possible when things are potted.