Inductive vs Resistive loads

 

1) Inductive loads use magnetic fields. Examples - Motors, solenoids, and relays. If it moves, it's probably an inductive load.

2) Inductive loads can cause blowback voltage. Circuits should be protected from this by diodes.

3) Blowback is caused by a surge of voltage created by the collapsing magnetic field in an inductor.

3) Resistive loads convert current into other forms of energy, such as heat. No risk of blowback.

 

 

 

 

page 3