• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

what is back emf voltage?

Status
Not open for further replies.

Chippie

Member
Back emf is the voltage generated by the inductor caused by the collapsing magnetic field when the supply voltage across it has been removed.....its magnitude can be higher than the applied voltage, therefore in circuits such as a relay drive cct it is important to include a diode to counter the emf else the driving element (transistor ?) could be damaged
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top