Spikes in Power Supply

[Tony Stewart]

its called real world EMI.

AM radio am FM is everywhere as well as noise pulses

locate your source first!

there is no universal specific reason or source

 

[ChrisP58]

But still I am curious to have a theoretical explanation on the probable sources for each frequency component and elimination methods.

Do you have fluorescent lights in your lab? See how the noise looks if you turn them off. Also consider any other equipment or machinery that may be running nearby.

 

[premkumar9]

Do you have fluorescent lights in your lab? See how the noise looks if you turn them off. Also consider any other equipment or machinery that may be running nearby.

Than you. Will check that.