Hey!

Can some one explain me how does a zero power detector work?

Thanks

?

 

Do you mean a zero crossing detector, as used in some logif and thyristor drive circuits?

Or do you really mean zero power as in, for instance, power failure indicators or as in electric kettle latch circuits?

 

Yep.I meant zero POWER detector.One of the IC data sheet reads it so.Even i am a little confused on this !

Thanks

 

How about posting the IC number or a link to the datasheet? That would help.

Ken

 

http://www.datasheetcatalog.org/datasheet2/4/09hsk1rhlrfghtpg2jfaq2x3oz7y.pdf

Here'z the link guys.Take a look at page 6,block diagram.Find the word"zero power detect"

Thanks!

 

This particular zero power detector detects when zero power is being used by the load in order to avoid supplying too much voltage during light load conditions. It is comparing a voltage feedback to a known voltage (2.3 volts) in order to shut down the drive to the MOSFET.