MoreDat

A Student Network for Collaboration and Sharing

Signup on MoreDat.com and get your Free Gift, What’s Next For Electronic Devices. Have you heard of FPGAs? Find out now here. And as a bonus get your free guide to writing a successful resume. Just Signup now and it’s all yours free.

Now available to all those who friend me. Checkout the Free Giveaway of the Day. Just Signup for free and send a friend request to Jerome Trent. You will have instant access to the Free Giveaway of the Day.

Pedicure Chairs Great Selection of Pedicure Spa Chairs www.UptownSpas.com

What is meant by seperation of grounds when we say seperate the grounds of control signal and power electronic circuit?  But we still use the same ground even after using optocouplers. So, how are the grounds seperated.  Would that be correct to say there is only one ground in a circuit?

Views: 22

Reply to This

Replies to This Discussion

Ground is a term that is often misused.  Most circuits have a ground in them somewhere but some circuits do not have a ground and instead have what is referred to as common.  Take a battery operated flashlight for example.  How could it possibly be connected to ground on one side when there is no connection external to the flashlight?  Your car would be the same.  Your car battery doesn’t connect to ground because it is isolated from ground with rubber tires.  In fact, pretty much anything that is battery operated does not have a ground.  It has a common instead.

Now to your question about isolating grounds; this sometimes comes into play when you are connecting to pieces of equipment together.  If the two pieces of equipment are a long distance apart like hundred yards apart, then they probably each have their own ground connection.  These two ground connections may be at a different potential causing there to be a voltage between the two grounds.  That’s when you need isolation.  There are various ways of isolating circuits such as optical isolators and transformers.

RSS

© 2018   Created by Jerome Trent.   Powered by

Report an Issue  |  Terms of Service